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 0xb37feffa987d9e5e64d190a161a818c41e0323621952cdd093634c248943fc55. 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/88d654c1-b4eb-4e2a-8f5c-59b3789aa903.json and https://artists.proofprofile.net/proofs/artist/88d654c1-b4eb-4e2a-8f5c-59b3789aa903.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 0x7c1089c69d4a924d0788c14361769c1c094685d6e5fb9f87d6f3676c4a3b3360. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SE5BU2124208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a58a66237824440517f4ae57126a9875eaed69dd7fb2ef22794d941b9214d8f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:06Z), 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/SE5BU2179453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc990702815ef9e09fa8eb4dd37c0d293cf8e2ed6e939d4981edacbae27db67c5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/SE5BU2179431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bf674debf924808421d3388f17f405d3c22f76f6bfae456d7c3c22107c1828. 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/SE5BU2363202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22ae9f907be5e7064ee75b57fa3c02ba556d003eb19880466a6ec19e9f47c8e. 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/SE5BU2363205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c90806e6f7fa1816310e953029257ce6139f5f7e33882b77385ad5c4a67a1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE5BU2363207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055d8d22c6498d0756f29b5f7f52cf3f63d0083779bc5da4f3e5fd116fc25fc. 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/SE5BU2363208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dda90a1dc98ff0e20fa9631615cc6ba98d4a5bc9b846619e573c1c1699e2e5. 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/SE5BU2363214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc451ac02388eef67881050deae76efb511c5a5cc733a50a7af4044fc0873b930. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/SE5BU2383927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54fad7cfc5a49aaa3037a38abe3eac7227ca0bdcf207c58bf6b011f42da44ea. 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/SE5BU2383929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda5c006a43381de0e829c4ce1b0fdc4119ea98f11680c870c15acef1bd21a29. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5BU2383930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a120e227cdc3c688261cf0983b5d250cdcadd982b5c0bf36ba9504bcd264f7. 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/SE5BU2383931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f3deac3993e21a64a4d2ea2ffca124110bdc0ef1a3e119e6ccbdb69a230d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5BU2383934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40061746af47568c4aad224e0aff6dfb293f938a2fb50a5966a0693798fa1f64. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5BU2383935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1be783568a973655da3c0a21b4ff5769313f7c4d162e7d9b37c399ddbf9969. 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/SE5BU2383937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa0bef0273881e3b6521092822e82d54570bbd8dbb846a9853dbe911338520d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/SE5BU2383895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a10934dd3679fd94f717dcd155bae8a67d561daae16131dd1a635bdc8c2c98a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE5BU2383896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a4d11fc2d1020fe0af0825a2d43719ecab50c2df90a07c56fd2bba553ea3c5. 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/SE5BU2383897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345c6d55f0afde592a505dd2cceace41b7a653eefd912f49f72ffebf4836d8d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:34Z), 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/SE5BU2383901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa395f4e664ed77a2b480762638edf012cf6846a6855d1217d6b21302fb931097. 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/SE5BU2383906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958348acd82ea0ab5ddfbba1b85b16831d9687a1ebebc03ef3ccbb5ab1bde88f. 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/SE6XY2332813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a27ecd780c9cfd22ec2eda6c0ce20247a15de468ea307eb4f8b935f989b3a1. 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/SE6SA2367793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb462fd9c03a5c03bff3d9d9dd0485eadf3fbacf902cd8df4941ddcd41efda53. 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/SE6XW2357247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9edc85304c3e3c99e867e66530dc6f4cf28d69fefa66c3845710ed75f3ec8d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/SE6XY2334281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edc05446127ad61a13da99adf14b40a2e50cec639d24da6716035b91ef325b2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:30Z), 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/SE6TI2318722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943b4d583f9df3a5e0c014a2fa3d57519cab01b775c1f6b0c67d05b63ca22a6. 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/SE6I32418187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e87862dccf29c08ac0ae25e58117049c8679a9cd32908eb1fb9bcfacb7338. 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/SE6I32418188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4a84e9c074967a63e5e1ece3f7402337736f0b31c7d2ee69fd6e55bc8ec58. 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/SE6I32418189.