Tau (; uppercase Τ, lowercase τ or ; ) is the nineteenth letter of the Greek alphabet, representing the voiceless dental or alveolar plosive . In the system of Greek numerals, it has a value of 300.
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde0aa3f4788f26ee82a5e448ede02a7e6c0a9e47c49554ede5476b743aba7e8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/974f08e4-a54f-42aa-8f76-a14bcac45eff.json and https://artists.proofprofile.net/proofs/artist/974f08e4-a54f-42aa-8f76-a14bcac45eff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf58a7bb25d2fa621634b529a98c3b806cf1edb2ec3d81f15f155063978683f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI369222230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d22746e882cdb05ef18d1998f43a2629ee5338a85c01ba1f485368c1568c4b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI369222240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd540c6a6cebeb809631cb8907c0245b0a676714f679c08bb1d2bdbe180015. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:07:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI369222160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8903a31b8f3ae6024f87dbebbdcd06c090726c44c2556f4703a6a65d7d0e51bc. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI369222190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4859662cfc0ef8593d0605957d914c6c26a2cc569f96a55859d233513f4634be. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:59:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACC1422323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7053c6a9d555d7871785feacc84bbadaaee4e95f4323ca1dfd088d343cf5668. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:45:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACC1422327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e57cfcc16a960b9f7a757be952b10dad4d2728e1ecd0e488b7862ad3e7054. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACC1422329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c138fa475b2d8aa098ef1d2e43d61e024f9a9955a40485b030a6b2cc9c873. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACC1422334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bf39c6e15de177de2cf71be84f01871b16e2b46f9d8a356570c9f94adb0bcc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF241502116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96e4cc5ce1d470cf3f4255b7099e5b158518f08e452a004f75a848fc848af1d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF241502123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42c7103a37cba6f5c241fec70e6b1cfed423ffaae9562d6ceca0e8bed06e2cd. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF241502128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c38c58f81d16a468d5c3aae824b8be9ff93f649c9ac8d9915244f316fc1f531. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF241502130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977299211779cb5475a753ef154034971a4f6fb9b93c3934871b2d37274e60a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6fe7c9c1f97b84e69efed3f86766664b777da86c5bc047ba99de7866a514c9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf391da4bfa97cdeb249913165b85b78d6583b7a62ff7d8511b880325d44f5b7d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e16402764b20f743a48ac5811c2b1d0867f9225f70b9d02d10e9b71ad1a854. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3a612a0ce50e6324f7ee648da8aaa56ea4cecc630429edbd35644195325bf7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd912b80732144c00729e3b705b07a24fd1da4abe6a1355451a2c5b2f366164. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aec7a5c9191148e337ba779e73d9d7e0e218a07387f4593b710af113610c72. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:52:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc18f2e65fc3d3fda83873840f38ac94a04d3cb89daa07d4fb92ca3253b131d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4872a8066bc0354d9be6b3a5cd13a26d5c7921963636ebe0a33dba573822f5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda70cf0883424d1fba1140577f78756f8a4fef6728dda00a1cb4120e464299ac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65266ff3f6ebede32496861d76c98bbb1caa10ba9acfdd4e20adde4d55ca422. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b872467fec0abe7b27359747a5f7f94ff44dc46de4d1b08841b6364b64748. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI366146240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd384e688c1b03ced2a6e394413ea9ec41bd5e3880fd3215424a17e0127effef0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59095b2b5ff5463992267c192fcd578f0698bd6e10332a84867cd3012faa25e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b41a83f6bccba70fc8ad78fbfd12c9bb13dbff96a5adb821bf46618e4b3ee13. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:37:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00506a8fec752b1fa7f48f1b354307835de9cee430921e7e1466c9854f5bdd15. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc9bea54503d2e742ca263fe81c27131b8da41c4977a8e4d6329d5b8bc3b0bf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7954c04ba787e57f18591e4dab3185b50b83cb23892146f3907bf71c19f4f9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI364363950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9978a77d4fd9a6dffda81d79daaa5eff314c9580e2436e03211cf278781aaa4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee1d1301bb6a352ff71db029b599f32d323bf3fcbfddb72d9412b299cf260c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b22c88116a035625ab5daed8904cf18825e5ffe4e41d7e4e9facf950e7f31c0. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8586f9f3da31f8e8c75ec6e386b3620b3d108ca4d4c248b92be181c286f0563. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68bc4e77a04d2a2dd7ea9d81e392a6e3f74ea5b019e455d82fdd0133556485c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e31c1afab534b117044ece28973af94790e8c49558883e65da18b6b228606bd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080e42a288de55e35c98009fceb725cf7acfb13273891bb72a8213c33d8f2b1d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI367250900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3253d4d4e20dfc20b55260f02a5b0b7924d1b9c37786f6f8ca3dcc4533ac9a3. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI361462710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c66266e03fb8a468b7a83e055c4887bf6bb25b7cfcb8965bb250a42e96cc0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLI361293610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97559385e106940d097f49f23490d14c5a49a0b2906c18d2dc74b7032adddb0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccac869fdab116f5b86bedc4830cbed2bc21f7cf72b8246fe917b373e2f457a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ae1f2891708d9afcfb0266d139fc38d12927e723b565beff182b4120e74c52. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe706bc98bfbc860ac4651936b23b3f83d87c7416aea9264b049eaffba4ee0c1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a90de8c848bd4bcebfdbcda083af6c9f788d8c796e0c11b3f9b26a150c22e89. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d98247e85179fcd2fe90e09f00eda212d3cfc7d3b162930023899510c4579. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda80d3f26b1e4b95608f7530e651feb889121fa40fe5ec88b43684c63facf4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6ba3ad86ac0abdf7bc12ea3e7e8cf39728cf5893e0c191e97d2b4ba5811f87. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eee9efb938b4851a8597db60a5abeb4e4b7e11372a445afc1f3fbff3433a17. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0122ed97b4301ef90a4ac7be0c2da70ed0a11a0b3bb8d55915da388e5eb6b49. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178592c3bd64fb725b30b7c8f9188b4033cd013bd35396ee989af53cd0f60a11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52be299d7d0765fd559c06579af10b71091b546b2f75bc11e2d7ba57181a93. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e1c132fd56b9f95ee840e469d670e2475b4bd485eef01d16206c26d4a13ecf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f4d35d90c14cd3e0133c55731754c2e44918b59e747fb5280cf6a862428ece. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacf87fc4a2efce91cc007df5230e631eca233ded060ce3d12e88e45adc28794. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7ce721f28efa102a19507db4541cc46768cbba7c82bb47c9f2f6f7d9fcb6c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadbdef561cd6597e96c6315f5d2db0584be21002e77d1de131fe945a1bf077c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe02bb0f6778646b70887e1bb546ad3b43a9383ad8665d7195072cef3b8e387f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa002762a75850f25d7140d6753607f3c16fad63fd67cd0ffbe226061efbdf12f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb8d76e034aff9a44cd8d04378e29905d1ab96dabb8e1573aa8c33254845d71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9882866df5fc16367d32fa5db32c87aa516195eeadbd8bb9e99d4b1af7016de1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL98Z2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce62b7ca54cf0eb23ad2cf009ae1530be9ae571c07447ff061110dcebc69bc1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLUM71700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b966bb3ae8c0bbe54fa74090507db8692a0bd50a46a9a92bc227d3db2d20459. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLA552100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168d95976b62683c61f0aa33f55a02822b9598ba1441c401092d0edee33a4c22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLK561400009.