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 0x26db0510572afaea723046c47ee71fbb58de3eb7463a88f58ebee445296edc6f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09f382fe-f428-4dc1-998e-8a1e883f4bed.json and https://artists.proofprofile.net/proofs/artist/09f382fe-f428-4dc1-998e-8a1e883f4bed.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 0x336c11ff77210d77cb9b7d83417a0b49f7bb456d6f37bc2c609ada59f4a3a7b2. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GBLLT2326784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc476b55c8ced1d9cb9b7951abdf22981a4b158194ec1369cd27ec97337fe37. 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/GBLLT2326786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b0bed218bffacc264fbac2971b77cd6bffc9ec6780085f2c55df506003765a. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBLLT2326788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7411a901af3cd5305375141eabea760c82f310018c5c24cc2cd4e85220ee7bab. 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/GBLLT2326791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56e97cbfe9ff5c529a60693031b1acb006aa513b5e83b3afee498863a919dae. 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/GBLLT2326792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e28e2a7eb4c4cb55bfc2779e9b12961accca7dfaf94ab68557fbe3397f39708. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLLT2326800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4144436ef51f97daf5f591f703152ab6eac059b82880238af564a67cf39ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2326903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ebcdcf54c8891655c57d579274c4d17c2d7d56705330b47991148c184a2947. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBLLT2326904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf139cd7e8069c11216db17a2fe08517f72f8d71be3f18103d6d81e5604859d65. 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/GBLLT2326906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fc09b010850869a97fbc89853a3d3b4c70f396c4bcaa6239af31208ee67505. 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/GBLLT2326907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13876f8c2e8a859c7b1a9fcac0bd5d26dd95909cdc39e359aa01491e40c7079. 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/GBLLT2326911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773ab3754db225dd9c7a94f4b7e5e2abe868f972c08530be5260518c7b9b697. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2326914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe037eb742cebce063eb2db0874bbfded3a45418a01e2fa38147bf63e90402a0d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:34Z), 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/GBLLT2326917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d09ffbd6ea19d846946cf6a14b9fefd798f118deff175b1429ffebc4eed47b8. 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/GBLLT2326747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b50b9d19baf7cc608bc2d4304ab88ecc90b6ffe9c0be60dda1c7b6066f104. 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/GBLLT2326748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8effb64f598e75046cdda20a4fa6264f1efba46f4cfaa85c9b0ca62f6939630. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBLLT2326749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541f97ade00857c08b805780b864d12732cfa3098bddf68c07b29f0f0724ce00. 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/GBLLT2326750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0900b3da77853b4df6f3f43e80073e6acb070c4be66951d1106aa41d666e8c8. 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/GBLLT2326751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa725c7c6e502de9d3b93bc301d785a2310fc02d6aa322658efd7b9098619c93b. 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/GBLLT2326752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961153cbfa4328b73366e837de08f20cabef22fdbfd7f3dee3b04b20a15a9bec. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBLLT2326753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51047fc2f29a87982c79aac5af010ae2ba764d5e2a07add789301be5505b5987. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBLLT2326754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ee051331b4ffd2983fa3f1fcbeef25c22e2182dfd6d719e231cb93c5f00d5. 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/GBLLT2326755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ffc6fe456b4e258f72180d6939b0f7730177e6cc3c360bd7a45310132704bf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBLLT2326756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ee02720e7c9e2e874d3b9e1c41a71fb56e63a44340a9b81cf27a0967afeacf. 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/GBLLT2326757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bb60f1648f8e8f83fcda95e45ecc7e7dda34f684b53fbc4e724d8b66ee54ef. 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/GBLLT2326758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af86aa83710668472df037a8b3b7cf4860ae522631fca01969922415cc871fd. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBLLT2326759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b6cf259184fbc4273f0693f2af2c4ae541f6cb15d6554931981c7f31b08068. 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/GBLLT2326760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4fe96d5356d2b00007f1a7db5711e2136cdbb4e4454784ba00f2b549d04c75. 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/GBLLT2326761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc71b34b4abee226664692388fb182de4e966eedf583e05c0dc3d576990b75f. 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/GBLLT2326762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24dadefe95660b9adc0bef0fa180998812ec1a556e31032373df73c6425b251. 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/GBLLT2326763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefac1e050ef350cd67a17679dabe438cc10bddc4183076cac371655f83dd0a5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:02:55Z), 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/GBLLT2326764.