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 0xcb2e4c53ca7c100a3bc7aadac02f83187e7b1e618319b8fa3294a00176917833. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83c11230-7d4b-4e13-a024-1686a4dd00c6.json and https://artists.proofprofile.net/proofs/artist/83c11230-7d4b-4e13-a024-1686a4dd00c6.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 0x72c2dab826b6ea378bad5a92fad6f1a8aaf08e3a2212f750b65d356529c88314. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT5M52567183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92667253cda36d76f1807e74ca6a3e87e58d4d620de57d6690c4c404d9900224. 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/QT5M52551348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aad27b36ba0cdf1df2ccc8eb78810f0174373bf6dc4c09fbcead185bb2deea7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT5M52590647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b71bf1dc3fca843e9c77fc8866839cdd2c119f4abb22988036117b9a762213. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT5M52567752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d05f727b32cfd2c19fc5b200b82bbf86f6ef2607dc9c132dc500d430086fa. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:50:21Z), 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/QT5M52510048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519e8dd612cc3439bba7ceb7701b674997d395c0422b2cf740cecaa191abbe8b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:01:42Z), 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/QT5M52562397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d05473227d917a2731d1eba9c17ee3de0f76ff06ee4efbadcb9d404b15d8fc. 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/QT5M52509300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660a08e4833db635e57f6520b6c4836df34a5a0ca0d21f42e6d1edff8b872824. 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/QT5M52535446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7000e8348926aefe18868a044da67595773656109f9a46cab044f94f656c0734. 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/QT5M52526630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fc060215a3a3bef1ee5ac1239a5f7e570f67a9a6c3bc06882faabb794dd8a8. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT5M52539016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce3c1bf38516d39710d7383b9d64b5d90e9fcf2e2999d0eb45b8b5a65a56947. 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/QT5M52561165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e1c9d57b096f3ec9e5278989306af0f47a3d19cb1251480d2fbd67f64e5e76. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT5M52519040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65636b80165598fe5f092e49e271f2dec1c18edd99954086b4eeae07bac4e882. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT5M52500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d6a50ca7f6a18664261b802ed35731e6d4249512bfd7a99f4e924b6d804b3f. 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/QT5M52526632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f85b4274ec631c89f2544378cf9f25bb2a9941863432a2211ef32703a345d6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT5M52542424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee85b8a296b03ddea0d52fd63a87704f41a3efabf079de881cc29eadb259e5c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:43Z), 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/QT5M52567284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f97a614766e8c95a58468eb11723ece1a67741ab721ae5f9ec1b7848edef23. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:03Z), 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/QT5M52550993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee945be82d229b1f8b9b7c1f30830ac377190874b9efb0b8c8c3eef256ee94f. 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/QT5M52586835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf1af8443afd1aa310e4a65b86753f9ab1244b788e3170ba5ac67b88f52a8b9. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:06Z), 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/QT5M52502913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77774fc0265e740ecf8355a521fdaf9739f4986c8570e99a6503b4455bfbc1. 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/QT5M52522921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b1c83bc4182cf964e286f3aab2c4b1b0b031f84d62e3d4474cdb67711689. 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/QT5M52572653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcac45e87eb021f8a61b1d34fbd9a88a7f4405f96d4ebc64b209a84ee0d0dda1. 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/QT5M52584098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23282996993ead92f56c226e2a9074f4b941acddf594c4c08b28c9e4aa6ebf6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT5M52550334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc4028b2ec478fb6be498f21b78e1686902dce397360f97538b782eb37353f. 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/QT5M52518214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8174bc8b66a1f7f5fe98ea7c1769979c20f01eeb318e41a1825bd2439a6a7ec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:04Z), 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/QT5M52586382.