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 0xd5b3de5ebb54a518d8b57ca4b6e92450536cf064002dcbf73d0b55d06160ded2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82b620f0-78a8-43b3-8599-413c4a094afc.json and https://artists.proofprofile.net/proofs/artist/82b620f0-78a8-43b3-8599-413c4a094afc.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 0xbb7bc343d98aeaf7a42bae3b898c7ee96b1d6fc507118b91d0b567acc3747ca4. 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/QZFZ32070800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cb3d07775039a0de3a18f711a73bf57d0f222ce800fff886d93170074ad04. 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/QZFZ32070801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb0e95c4b3764fda840bb58ab0aa54d4d6c0b9d0cf3ebc00b0196e9a5818013. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ32070802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2da4822f30e2502cfc0356bd684b5e4a679b9d0fc097a78753e058d3a5690. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ32070803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c57be8f746965d5ee7f37e1b49b821f7a0626574c79b6ce3ff7d14edb2c0959. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZFZ42087211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cde294564682a10eab7f8411daf91af9c3be808b648b4b6c2339a81f9b84fb6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES52000756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f5731f4946767105425dd36eca95b0441861ccf6c0fc2424eb064a51fcd9c. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:56Z), 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/QZES52000757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ce4aae1e45571efe799e9858a81dbf2e201272eaa842dde8b28e955eafefb1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES52000758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4103087b9979ed77e7b0434ab8341ede7b5eb6b72fa97c365d5e50281f56f935. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZMEN2078194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a92b1c7765867e1038d65bd0bbb8df6f78d3ad134aa2774d5e2abfd05265e3d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZMEN2078197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cd73d7dd3c9b178be6f0e69a947e0cce3c5e3ae088ad804a36f51571d388b6. 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/QZMEN2078200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fc51bcc31dc44036344ced4c3161a1d73aea4db52e4b39895a7cb0a0aa56bf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB32396150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75498ba291f87cfa7b5a4867ea535c850c5685006d352176455283d059b8365f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:59:42Z), 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/QZTB42391809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0858e48b5bac48751ace38fbd34ef0ea009af19e8c2f18a2acd92ddfbe6b7. 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/QZTB42373586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00792f24c6180129fcf9cb06b1c845aa3475dc8b6d555217d085b2bb5acc4185. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7R2422082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f92f43c7febe399eba0dac7092789e03b552d51bf3ccbfbefeaf5c4971edbb6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZZ7R2422092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0ca115c9a9180b2c4a6df6176fa7868e3fcc752d55f43f906c7f1ee547ae82. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN42598009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94e7dfceccf396014dd3009d201cd31c54d5e0bc85f257e9af684bc02ffdd4c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZHN42598010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f92dffea53e0644dc189b78020d85d88738421112b7d28b06369e96c808aea. 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/QZHN42598011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639212cd9598701ee639e903851eecca6cfb33b220f88209b43d7b4fb17837c2. 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/QZHN42598012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0819799f0e817bf494455cf558f2244504e6d606dbb18e155958cdec875746. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN42598013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7278509db547ae630e7ad384481c073d7191e8fe1f16923046412a4a408a550d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHN42598014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a4e7d30525b86170db7ef567a673f1f97032c3973109620ffef18adb517118. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN42598015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de9f1e47a07de34d419486fce5424e544b86740a45faed76b9aef6d72dba903. 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/QZHN42598016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffed08dbc63336bbf9115f5c2f3c7921b1726385c13ea49636fea566489fcc5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN42598019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1030a368495d15c192dcd53fb585e4a418f4403cddafb4d162638c591ad4a96. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:42Z), 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/QZHN42598020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767df61cec0447a044dcb74cec33fafd0ebeaaeb0f158bd85131d6c0fd201983. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN42598021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19d52c2961f5ebce785d5b00257b225a368f1a995cf00074830862df6fc5bdb. 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/QZHN42598022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4d4666879fa59302fbe8918241b95ae9f59108980bfa7fcf8fd7fb2750de38. 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/QZHN42598023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa8d376a2f5472ab7e6367148d14996501a85b10427ce54a8aedcb1d479c0c. 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/QZHN42598024.