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 0x423946e9e3b49ee2c5fb24f158c776365d5f6a866c22b3795c9d8a1780a5eb7e. 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/e7f7a980-f5f6-4f24-8511-f2c5cc09057d.json and https://artists.proofprofile.net/proofs/artist/e7f7a980-f5f6-4f24-8511-f2c5cc09057d.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 0x0d8a96ddfe37fe9f9259d1c1186031a8d93ea8c54c7b1a96eaf4cd823470ff52. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:06Z), 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/DKAZA1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8a96ddfe37fe9f9259d1c1186031a8d93ea8c54c7b1a96eaf4cd823470ff52. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:46Z), 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/DKAZA1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff65f55ffba2144f39fbb5c82c1740789cb6420d9505802a3b0326e2e962a04. 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/DKAZA1800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c181cc065a21284ecf4c618a972f378456cbee3c7273380992c3e4b74d952ac. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DKAZA2000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb9a5d4e614eccf97091d41e6b549a37523bcc0303ded099041ffd9f3e9869f. 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/DKAZA2000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2d3936f6fc5738397cbeac490ae3f946bafce3b0a22d2f4e043c8666565483. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:14:02Z), 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/DKAZA2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd01938b70b398bb6818ef93b28315d3dcba77d8528ca29a47e5ca0dab4d2223. 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/DKAZA2100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1a18f7925fc24682a5a7cc2f7b089ad113785a26a77fecffcd92c59745e2cd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:44Z), 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/DKAZA2100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0909c9cb31fff69645b9c6e13586e4522a4bc3fedcd4a44ad823615c397b37f. 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/DKAZA2100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f050420b48ff6272e6be385e203eab1ec8437b54d022d295f07dd50e0e93345. 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/DKAZA2100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4959f43b85fda27d1dbfdcdb83124ee9782b35bdb185e375ff09a1b48d5118. 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/DKAZA2100345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26c4e833342433e9a0c64b9c7550b4a9710fe0aeadc71b6a23e1c36c564f6f. 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/DKADG2200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe5bea33bb6973fe19375371dab578134fb7a4e182203d832fc2ce878432cc7. 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/DKADG2200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d55f4273b069de00a5c780bc9da0475833d4a4b590469e94261596d8e99adc. 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/DKAZA2300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d537a0a06189c8542551e5c8a4ca4d89e89aec741aac8eb7af5e1426a8753. 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/DKAZA2300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852aa01b4d38ba5681d5d5ff16dcedb24f90d47dafbef4b90ec0c8725115f595. 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/FRX282433644.
Toppen Af Poppen 2022 Synger Maximillian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26c4e833342433e9a0c64b9c7550b4a9710fe0aeadc71b6a23e1c36c564f6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKADG2200589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e50c8bf0641f980b55272e123f525d25c19933b6e9638fdbc404a2fafb15045. 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/NOUM72100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e50c8bf0641f980b55272e123f525d25c19933b6e9638fdbc404a2fafb15045. 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/NOUM72100160.
Toppen Af Poppen 2022 Synger Steen Jørgensen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe5bea33bb6973fe19375371dab578134fb7a4e182203d832fc2ce878432cc7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKADG2200636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a1ec35e83ad6d6b3fe3cbd45f35f61cf7cbc06bc2d881b907b9c99d6e70789. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKADG2200616.