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 0xedf18c8b08368dcd389125796ebd8a7990e24e64c12330bf7f5c7c5cff7bef3a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6e8fae4-3da6-41eb-8064-b536a8d1dc23.json and https://artists.proofprofile.net/proofs/artist/c6e8fae4-3da6-41eb-8064-b536a8d1dc23.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 0xde3124790cd1f8c6d68ae7c55d5808fe90e88162d0a8dcc11c95b9e20e64ab3a. 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/TCJPQ2114944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f91103b31ed2d7414ea517bf5b2dcebeea21d0899950f2e5d304931b19fb3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:15Z), 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/TCJPR2221108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f34045717de43ed6807932558e7b013ddc67aafc974549934aa13379dc929d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPR2295474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23943db723f5e550018a3cffee9f25b3fa4ed97db00dc6ed2dd124680786ab78. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPS2269197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3962aa24fd2d1f0e89f5ae2b826d6d834033a72b52836bb2116beed33f48e8. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCJPS2295545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0564ce2aba8949be90326ee1de8915ed9eddba6b1c8c3bf2f03c87d0693a29c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPT2277655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69a35cd97e2da5c94c1711bed2f87601217af141884d7149d9983374678e0e6. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:01Z), 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/TCJPT2277675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff02100c7322b6e2123f0abe802ed81ef1f6741a01a977fb19086b5b18ed98. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:17Z), 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/TCJPT2277720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13e0e1b8939390ccd7f4bfca13e228c2145c2deb5d41bad05067d07922a7432. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPT2277768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318ef3486fb1a7527441c376153e539cbf763088771d8e813b8d7a1b3fc657e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:09:25Z), 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/TCJPT2277962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707ecddc85144b4c3890f4923b4aa9cb067b6fa9927dd9c7a430d58f387d18fe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPV2314742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215475cbf29a57470e18210a699e1ec6d34b7baeb210684d8511814a8683ac1a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPW2317550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0e7a7c66316ffa6eb98e7fc62b56eae2ff4dfe512f7353e1d03c4b9a97e975. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPW2355924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb32dd444bb6550c7dd983f475bb9b382cd1b530048eedc825bb7d63c4a60901. 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/TCJPX2302149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea806f908bbcf5df3045d23f2c7a9d701eb37108f719d7e6a4e853bec62446. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPX2334600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a4064bf12fe9f1dc8ce5dded00b8ddc0fce788b2b372dd897ae53d374a2cb3. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCJPX2372468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2a074214362a08cb4401af4d2699861552f28789ac8029ffc749ce1fec346d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPY2322289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11881fb2e55496c78efb7c20bdd3cbc148243b57737c2c82d2d483249703bbc3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:55Z), 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/TCJPY2356765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7e14eedf9df780370f21f2acbc52d5e5fc6eee62529eb96f4093ee7739a1e2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCJPY2477342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e7011d2bddc496246ee0574556c875ac29535ba37c7276a6bda1b8990187d0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPZ2447834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c88dee3c5c98ed5b105972654ac34e71d0b9b0e143811eefe7cbeb3a312b71. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCJPZ2447837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c24a042737201f9a38ec661250bc1b05c7f72296bbd27faf32212982b867e7f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPZ2447844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9c7c49b1bc6f224c1c02299da5bfb03e76678c318ba5cd940d073a4c486cd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCJPZ2499671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca109d05003efe8fe466395410a3e550395f24f4c62d6d2aa5082d63555e7ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPA2432332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb255534ca84618e93424ecde9f00bfb7ad74b774656ecdea236a951f585b2e21. 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/TCJPC2435279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c63ecc38a4cd5c6f142cbd53e5a9d465cda8bbc16415386bd9e2375cf10a77. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPC2435286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c63ecc38a4cd5c6f142cbd53e5a9d465cda8bbc16415386bd9e2375cf10a77. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPC2435286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e367d320a709d7885ff72190050c4d88909b63611dfbd1c3ab11f84e39b42c. 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/TCJPC2435301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bd660cd17b063492adcaddcd8e033d8013505f56dfae12189f88f4448a464d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:18Z), 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/TCJPC2435305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55d3c6c1877a393368499ba6cf502b4665f6cb23d5ed296541fa4b8034fb7ef. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPE2581084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9223746aed8988e9c885737b2c65f06bddf16ca96a762aaaa0343ac7357d6b. 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/TCJPE2581093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7e2d708ee224a08b78066a5d785444abcb489b5ec3317cf3bbacf1928e59c6. 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/TCJPE2581100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f908dc2fc4c6b282249fd0abd11514acaa1dc91c4d35bbe6c16aa683b844a1. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCJPJ2521452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a027663bec90ff54e2ceb66c77da50089af8f8ac61b412f2f4443ba5bb836e3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCJPK2560892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6777937360110fdae749a29c813f0da1724ec8586a6ff71bb5d1cc5fa6e95129. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT66J2586622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2684b2325a8d7b6b6a86ce4d6a8620650ab1087120d30c6cbad0bb20bc9423. 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/QT66J2586626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2931b1c5c9a28d26ea7232abdbc3a4982270ff13400c3b62aa28a34ecd963d0b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT66J2586627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b53e9d30468bc3a28145b624e0cce22ce587c0a4270bf1900d284cb7cfb1ad. 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/QT66J2586631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaddd28c75ba3867c5f2e4b084dc28fa17b0d57e278b21160a542e1be74c35f0. 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/QT66J2586632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769e3e4332de9b3b15af63e570ef418cac6a2b14fc04e5587851e4451c8c9e32. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT66J2586633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda49b332e5fc5f2214bb61802a1e574cf934f5bda2111ee14a0c17c92e95554b. 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/TCJPQ2161180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a61508e2d5a6bdd1124df16dfc1a8ccb0117f2e65ca1eab60ee81ae07c1ec7f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPR2247463.