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 0x574a9d326c2ec6d2a53db36e0193bfa212a80ab6f2d3f40fc700aa1113ca4a13. 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/cce6fccd-5024-47f6-9c57-abb28bc3d879.json and https://artists.proofprofile.net/proofs/artist/cce6fccd-5024-47f6-9c57-abb28bc3d879.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 0xafbe0baae7bc84118109e0f6b6eb0f9490a48d799fcbb4f335a5f3c5aa324cb7. 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/IDA141902752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2413ee99b4c86e4fbe9e15e308a556c8d39e08ae12b4c04342ca816dd1d0c2ad. 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/IDA142000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406e2965978d1742957b96ef1e4ac34b4411e9ff33e74823afe3a9335a5a0e0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:04Z), 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/IDA142004166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354047c12711d9de2c3810b873458f6a4fd2aeb31017e77fd1819fc65a27bfc. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:45Z), 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/IDA142200865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b1dbd51d01fbfef9b54438dedc827900a4f9e53015380e2e6dd2366bbed46. 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/IDA142204304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cda920b62cd5ae6aa4ed547d69f1e58cbe5ab47dcd737d79aa25a572afe2d1. 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/IDA142204308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21be6bcd5400be8fcb40a51f45189c9568b0f59cb7b4d381e384bba28d470d4. 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/IDA142204309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c13d2401b821f7d0f7ce60a91ea84b1aa34a902d1e5486de3e5ac2ec969ee. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:06:20Z), 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/IDA142204310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc156361f26824dccf2ba302d6cd6894623b24baf7a771fd76f6e782f184d76c1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:36Z), 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/IDA142205787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354047c12711d9de2c3810b873458f6a4fd2aeb31017e77fd1819fc65a27bfc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:20Z), 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/IDA142200865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ec4f068d37837d0a7d540ce1cb5ddfc4fc1478713aa5703258a30f0a8d77f1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:01:30Z), 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/IDA142204723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25aa444c298740a36331699374f3309dab2cda1d5304fdbf7108fbef6da4f88. 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/GXD7V2235110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704f57bff23572f800641d385a571ce4f242a1068a790ad634af3e2b58416783. 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/IDA142308840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550590947ff28208316d495329367decc1997c834cddf09fc04f9072f72373c. 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/AEA3A2480947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaab891dc5ba0d6b4228b45c4a35c953e874c55304b0d9ce59c18754bd7c3d89. 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/AEA3A2397611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc698e7969498868e6f40fb302df60bbc633a08d5c38535fdba606175a0f6a00b. 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/AEA3A2389148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998761e59f8a41d9a773cb7d6cd3c964a49a464bda97b12ba2ad9d690b65f8fd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:18Z), 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/IDA142000982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc3b845c3deba5173e3f44c65c8028c1060e948951fb20cb1ebf320d80bd229. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:19Z), 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/IDA142000985.