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 0x3f36e2f6ccaf9aaedb766587cb69077a9537d0cfb2a2b4351cec6b05bf1a8d67. 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/955a6930-d015-419d-b99c-c0a310d9daab.json and https://artists.proofprofile.net/proofs/artist/955a6930-d015-419d-b99c-c0a310d9daab.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 0x8073fbf5a65da33fa70109191c974a8ab5d3ab3b2965f19ff63bdd2782209606. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:36Z), 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/TCJPO2140124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b1f6cd8e4b7ff9f4e5012a7d828a0bccb83508b7bdda2db3af73b85de23ea5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPS2232175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9532109ca61a253fa44074b6d46376f653b5b6b2180d61abb3f0e402af83f410. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPU2211843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f950d531d540b51361bbce581fa17bf386c1f587f71543345b9b116dd21276a. 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/TCJPU2214642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb584b78b0c5026a29be2f0560c3cd7a8046c27f0f64db957740920a12059fc7. 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/TCJPU2214648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dc2d3499593757c8a9a4eb6097ef0da513cd91d65ace24fd108f67b6030c5e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:48Z), 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/TCJPU2214760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de19ecb190e082b3968eaa8d28b0da84ff66322197ec5fdb46bb0ae19bcf0a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCJPU2214797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f950d531d540b51361bbce581fa17bf386c1f587f71543345b9b116dd21276a. 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/TCJPU2214642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb584b78b0c5026a29be2f0560c3cd7a8046c27f0f64db957740920a12059fc7. 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/TCJPU2214648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de19ecb190e082b3968eaa8d28b0da84ff66322197ec5fdb46bb0ae19bcf0a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCJPU2214797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94adf151ff67e4feb915b426abd1a0b5965700a4754ccd9e36f7c9834605f91. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:48:50Z), 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/TCJPU2217160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9876c9fe9edfada916c316fe7dc3eb6bef93c527808bb57df88c4fea42119523. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:57:59Z), 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/TCJPV2337805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1f81eb467da2894e70248a40b84195ccea31eb5ce8a195f5e36182790440ab. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:04Z), 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/JPR562300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48ac2d29b1950bf30061fde6fbaebf894727cc790c3c1e68aabcc97533ee788. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPU902304778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34485cc7f28634eba772ea98fb2db506681be24fc0001773e988376655c8607f. 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/JPTF02418901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee723f719d0299fc39c78b1dd0583a7c78bff0c4177e61a1612e37903004128. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPTF02406203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc957bbb97a84d89d779fe497ebb39af62448423a367ce2de82985e22ab0b8fc0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPTF02502701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436cfb89464d8f975febf4a6d8632c0c5a880b717f78d720e7f924e45d2c38e0. 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/JPTF02501001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a15207f609afbf3b68e4157ca0de542b72abc0d6b97434c079afd62bd673c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:30:08Z), 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/JPTF02434701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5d38d94dd6f798d918e763d1d562adf9acd3adc32a608b962615dec0fb579. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPTF02431401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c0b92e7b16359b62f5917deed55af54eefb943ae7ede4f2e175777cd2fe76. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/JPTF02502704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80036a8122c35924d459f02f6df2a4f4274a8bbd511568fc0745bf779c8e9302. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:43Z), 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/JPTF02502705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e330c0032ad26f8b06d23eee13b6ab13bbc40e8e6aaa87a85a78adc048c862e. 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/JPTF02406201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4568813f2c98e919717e1bc10a4b6a12f72ea3b9de0bf84aac7c4f69a4905b98. 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/JPTF02528701.