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 0xbca93aa27221a39c7f700c4e968cdfa4c1ec7a88a0d5e7903aa48e4ac9c6e042. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d1da8c-559c-46e8-8c79-54b908359c22.json and https://artists.proofprofile.net/proofs/artist/e6d1da8c-559c-46e8-8c79-54b908359c22.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 0xe7c2052f7b339af0c7cbe8d830e80739227101a86a8a13fdc7878c28c112bb5a. 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/SKC851000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf89d4d67d5d1b7d88437e0953b1a39b90cd723c313263372c19491b4708e0e1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:12Z), 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/SKC851000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11610db4969fcc453b0ae2cc3a753d912ee6fe9f321ee15f60ebc78449e0c9f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SKC851000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087aea274fa308d8df0a22ece24319c591d836328ff01b96ff25cac1b5704f27. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:01Z), 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/SKC851200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34258cef21def874054fb129ed00ff3b4d81f5c954daf3c5a7440a71bd8e82d5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SKC851200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b938553e5eef7678936e305f207b181fc16800e40a2302defa5a9f17418db9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/SKC851200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12371aa6e03ab79c4d02df4a23030f449b746d830f4d1aa5c6479ae00092767. 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/SKC851200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac9c745bcb7b5ad0dd4ed86aea9367dad8da6f2565725b03e3b6bc0e8bd435. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SKC851200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f5b19754a53a3ea865d426fe81ea85a35e748d3a04febc2277506053aa6ac0. 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/SKC851200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5860465b79f800a50d82510497226690eb503ec7bc835c71ca7c197a3433eec. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SKC851200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6ce749aec8ef4ff382c87e3203efbb7b939ad38dda7acf1d5b7b58b0e8aef. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/SKA011400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2879ff6bb4061a789eefc41c162db4d9d1f88bbaa187039123130d757b753c41. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/SKA011400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e9a0db1e698a264eef5cf8a1357942f2970a1320cc644402999582c0948ca1. 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/SKA011400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bae6ed7f6e90491f2c3d100f4bb75672052e6c1c223cce68f650c7ca1e595c4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/SKA011400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4266bab71c588a600bdaf1233b6b12f6929c28210529dd16fafb726977bb9e0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/SKA011400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55943187032e68ed52f6c06573d472fe856fa7fecb082d7aa8a16aefbc2f0fc. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SKA011400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e99163757193b7555a648f8586743e61101d65b5bb3f45a1a8d955713848bd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:45:14Z), 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/SKA011400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486eccf306ecbd9bde35afee9c6cbc40289d043cacb879428bffdc8a4e89d96d. 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/SKC851600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6a36a3d212e92eb6209e94934d3c9e151b9b3346c479b2a8b7b0f1cefda792. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/SKC851600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fd28a731e04b906f0b384acd74bff8c6a84a0f2fb9f135d4bba6f9d01f2cab. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/SKC851600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a2909d07bca0be60fd419cfe27d43c6065e5e56b1b4c9d1e258f8d55c78281. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SKC851600406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3aa51e717c05b37e6da36d5960049aff0c9b5b3f3b6b72d535b7659db8d19e. 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/SKC851600408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c491ccb318b624afee9012ee266c04de63845d9559ed9a0a8d5056f93c0cc5e. 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/SKC851600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ab3e77b2d99af94d8a5e551e2464e1f76720811cce10600d990b59b364bea8. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/SKC851600410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc867bef7f15415ab685df08988674093ede9e884ab70bc36fc30a1c471c8d82c. 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/SKC851600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc256791595b9421e4dc1213dc175ddd2624a509400149f42b6f2bac2a0613bc6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SKC851800502.