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 0x168d7d53877950f995e2b065730ba67489513a2725a69c15ef0c76fb91f19344. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/602397ba-f5fb-487a-a532-2cf4ade5d46e.json and https://artists.proofprofile.net/proofs/artist/602397ba-f5fb-487a-a532-2cf4ade5d46e.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 0x4d1a7e0167262784da49df60229552662b47a534b904ca87725183e890d65524. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USZZR1301892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95662ec1d1ae1f21569c3da778e39af2820b849bc47cdd60e51d5ab5a911402e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:35Z), 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/USZZR1301893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfd6180b099fc90b78734c489a4b37dc94cb7efd3ccd015facfc335b27c3851. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USZZR1301894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b6947cdce312f8bd055d4bcee4563ffc98099922c2337bcc27f747d647b953. 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/USZZR1301895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae3564de31be59b0fb6c8cfeab0afa56e113083f79d2a4f1c054f68f8f90e10. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USZZR1301897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd712ee77b3da194aaf88fbe9749b87a9dd16e2dbc080c6630f7d2e95947e23. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USZZR1301906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d1362d55bd751a5be446e19c1986d0aeba288d7f11478325c8581339b0b132. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:01Z), 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/USZZR1301907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69375c8dc9b38f7faccfcdfbd4f15a1231582e1a1c58db6f6c2f44b606919eff. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:55:08Z), 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/USZZR1301908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074fcb86464c19f55238f5a3bf4f62c8f39c08181f050a6da17cce2fc4d376f9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USZZR1301909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa530b9e7ffedc49a85b38b2b134fbb3beb06440ed1217bd4213cdde24f558d1c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:43Z), 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/USZZR1301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97083124617019fdb48b60fafc567a5ca5754eabd8ba7b7896b8bb65933f65a4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USZZR1301911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d7d9ae9659a126d9180297878d2def7a84ce27f03b9d61120cc16c7af0c3f2. 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/USZZR1301912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6c840e634fee512a918dc2944e406e85d974b369628dd00b0d904651b499b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USZZR1301898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994810ddd86f0054f9c2df99cd8e98a01d1b7ae8a6248a1894b11eb738ad9c54. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:52Z), 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/USZZR1301899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87627fd2f3ccd646ba91e2e771389dad2e37745d568f98889bcf8afc14928280. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USZZR1301900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2029e508e943420204666abd912373c2fafd6825a611131503b2fb799ed7c0c9. 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/USZZR1301901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1db40651bdeceffd502d250e702916af66f5feaeb69be2c776b0eaf3eaee031. 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/USZZR1301902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4206fcf799260a970beaeb7321cafe186c8b6d36e176a4b164a64d5ab328e395. 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/USZZR1301903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae7631b1254dc1afe26dedbc7a23e174bf120293561245628af6721f799f98. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USZZR1301904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06767a20236066f2a00d5d5cc35c93c06401508b54bbc371a19ceb3352abbcb5. 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/USZZR1301905.