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 0x82dc74be52af552ffcf1cb84e830ca880d56293e836eacf0d3b8d1a985054b5d. 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/0a0f73f6-6c7b-4200-b15f-0a20508ec210.json and https://artists.proofprofile.net/proofs/artist/0a0f73f6-6c7b-4200-b15f-0a20508ec210.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 0xe28d5e55f3ff5da269d2c7ab667d967ad600002a74a2c57adb979f3a543437fa. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR96X1844112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa92ad712f5bb42db6e93b8bff41734c1715281b73850cbfb63d625a6c15e97. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:26:23Z), 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/FR2X41944637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f82fa79780f99b3d7d7e66569b1bddad8d041d5e264af110f07f68ea803eb. 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/FR59R1932313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1598a76445dea5bd147769ca224a6f2d82b2c838c79345f287d5c5335a0f96f8. 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/FR59R1709380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58e2fc0c6d35da099667e5f07f782d328e879d492484fa9f84d4f32f17a165d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:07Z), 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/FR96X2033546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaa39d7e1ea22a35f298a1e79a92ef70359e3c639bbd8f096d4d15671838ec2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX282058176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e657e1dc622fe8a9dd4f994de941899144749212076f17700477fc43a319c3e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR59R2115660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a94639d48ee26bf3c010ceba71a848d6f0f8084dac393946309f54a1a7fa7c9. 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/RUA322201309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d4848f3608c8ea821cc986ee6f99ae799cc8c5f719e9f47b204f103308eb11. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2269120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e2d0713a7759e5d2aaa2b9471538b1c8efa14f2976bdd1174f5d12f83d370. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA322205654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176122682f81b3e4775f2a4e3bcba88797ea91f32b623d8cf8309565e7845fe. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:58Z), 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/RUA322300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec346f3f6dade67f846d0be19815355e39499559f970812d24d702a7207192. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/RUAGV2303251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bb5fed6e6fbc7b37fc6e29661c208120b6d91f688c6ec65d8035d767240806. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGV2303898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c87662f6c302189607c6b6ea76a252e11f1cd4f11a106d4eb70cfb580d66bf6. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/RUAGV2304210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d26a89e7e649b6c4d7922b1bdc8320c64d4977976422885296ad3bb3d99dd18. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUAGV2304892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4eed9f3f777a0f6a842e61335fa9e8e34b917f7fde82ba732afbda6afe4901. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:21Z), 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/RUAGV2305711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d4ecda51b6b7ce5e2cea0458f41124ec0e9a739b7bd63bdfa2bccc7c11892. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUAGV2306922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb66fafdb8630453d9298efe92a169f77bc1fbd7543563935ab37eccc227acb. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RUAGV2400678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6aa9f8af4c7f9bbe357ffa1ec6d4f8a2307a7c4b20643e7ae71a464d9392bd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUAGV2403470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b8ac58fe5664ff778b232979ed89a4ee95a34be36c1634eb4ae06b1385b631. 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/RUAGV2403819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3313caaabb0a53d0a21797e0efb347f9b63938622d00c1b338efda5f01cfc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2404314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5bacc5b3058ad984be43cfe64960d8b77c5c61d394b0b29af21aad0392ccf1. 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/RUAGV2405751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f70d1904b2fbb138745ef94b39fe24b9d9efe372b234708e71706e05e86c5ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUAGT2484266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd909f4690b464712c9495bae6761bd57e4e58fe99e1d80b0706f36423eece08. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA3P2500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3130f41cb66b500d7f2e7327011fac197f03720c0072831f41bcfd462db691. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUAGV2514253.