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 0xf1a944452958ec53057466c3e98a70f9a5fb23d8d1862ac7f1b72590be1bc001. 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/c950738f-f421-4d17-9863-90932b459631.json and https://artists.proofprofile.net/proofs/artist/c950738f-f421-4d17-9863-90932b459631.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 0x6bc8c1802bf42bfea0dbc17628d29c352fa3c9811bc39b1be41a1d2328796409. 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/JPU902003334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5446825040521f52fc8a815f83cecadf5fcfc9dcf789a7f00765df85af6665. 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/JPU902100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e4e67e84655b7fc6cd81ee6d2da95925ad8388e938860177fb5e003852d717. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:02:00Z), 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/JPU902101877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01f54261ae90216166246a3256662e0cf6d7e4855b75f19b4e90ec7954dd61. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:35:06Z), 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/JPU902101987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd9e37a700cf673c40bbf055d3962db40280622813bbfbd9e944840bdc63595. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPU902101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e4e67e84655b7fc6cd81ee6d2da95925ad8388e938860177fb5e003852d717. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPU902101877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c272f24075f17fe3029fb71cf16416aa9e8d375a3a799474d5462983cd845db. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPU902101985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a484ff9bb85c85d07ecef06ca24a722887b17e7f9e69b76bba0cbb4a172e7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPU902101986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5543ef79b3c0733d1f039bcfcac92a45cfbb7e0308e31bbd8b1bab5584cd913. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPU902102593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec5f0e76994b91b3aedb94daf7285cb181f4aede969f66bb62879066c4c7d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU902104675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26afd29820598ff774457093145ade901641d6be2d524123276fd026a1dd2e7c. 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/JPU902105107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f6415559661c3c050535f0b9bec337681709fda6511f8ddbcbb5713bf48c5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPU902200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b571cf56e96c41c46aecd5b065b206a77b2d1c671b2b762e1a813c10f2f526a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPU982303137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4f9f53ce459df12a05ab69ebe50a90b7be400baf2949a2cd3edadf4966d23b. 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/JPU902203480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce1df24e1f3541b80f2fafad9332c84f831c7ba03ddb48801c9e47a3b788247. 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/JPU902304024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce1df24e1f3541b80f2fafad9332c84f831c7ba03ddb48801c9e47a3b788247. 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/JPU902304024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da6cff57b304f302b5e3e43081b3088f7bd2ce8f4b5c7a26be6ae7612452e57. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPU902304025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6f8d299437021d3378208e2607d8ede5947024e77081304ad89b881940f473. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPU902304026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17548bd56130214c45b4d8eeec9fd0943a27fe29c863841654108f01d0ab3ff. 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/JPU902304027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2772392b65c85b97d01f84795e214924bd46f645a743e07aa66021459c906d91. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:11Z), 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/JPU902304028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f188cbdaf8270c33f541df4ad7a85d7a1137f8f0ea1fa0575941df3652af8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:44:14Z), 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/JPU902304029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477bf74768773d4932a123a39a77fbd16a63e952da7eb3ebb3fc308c5a98ff62. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPU902403865.