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 0xf90ff974811262e35908a6565c0c3275f08cd5dc51c81a2d2a4e38590cc3a3be. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12ae0a24-7d9a-4592-8b53-58099894ca85.json and https://artists.proofprofile.net/proofs/artist/12ae0a24-7d9a-4592-8b53-58099894ca85.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 0xb9c1f8c9394fb699aac080cf253045f41afcc90999f37846dc8ce5340a9ab652. 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/QZWV32303359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e460e46aa21cfad15dfdc6f45d39124db75129e63cc2b28201b720a9b3349a. 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/QZWV32303360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9fa01c3e0b3fec83b3a15ee09d1d44824c5c448e9e5cdcecb165adeaeb3483. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWV32303363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c41a08ec83ac7474ba928acf9fa50f28c28f8ba5299c890534bbc12db7ec77. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZWV32303364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a2c695ebb5d9265e8bdc9ff47a46dffd2fd34aef50d4dd026944bbb6a75bd3. 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/QZWV32303366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2ea5a80c18c99764d4e77e4348c643115a27073f8122c1fd51f07be4cc18c. 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/QZWV32303367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44630c27fbe23427a8c77bf82d1b2627f6f694828d3e70bec391c8714510f72e. 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/QZWV32303370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3138e273add13c19247c24de791cca1be074bf2b4c869512ab2ebd3345e704d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBWUL2462206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e5f8ce1459f80a7d908541ffd9cd6198f2e8f41f8169a5c9fc7c509d2676b2. 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/GBWUL2462209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba783fe0f2ed8cb639b8a1e6fb7c31b8f2c229bad7918a9b509ccdd24a9c139. 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/GBWUL2462211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4593325b5e67ce82ab732d0127e7953a42b11d406b3dd26b6a671f08fefd5ff. 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/GBWUL2462215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2a04c7c1acf5c3f26636e2e8b404aba25d909017ce504c4b508d625839a0ad. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBWUL2462220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e341ce0a04bf3c590f8db8fad592e2079c5c5c5436beeff3ce6f8645549ab7d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBWUL2462224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a97b7e87d0e582599004997b1253399d4b151ba062fd14d193aaf88f74f346c. 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/GBWUL2462228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45402909209420a42aa4132bfd1a350c27b6d5853e3a37416bc0b4a157e7ee61. 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/GBWUL2462159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16293a1d89c03c555a455e8d064d232fbeb9661f9a8f418545a375a1dbfce769. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:42Z), 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/GBWUL2462160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f90cd04730b5a3f79a4e633cf3e39e2e9ec5d23370443dc6522f67928e72be. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:23:46Z), 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/GBWUL2462164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f63597ce33570d3639be92f2fed45c66f61f9c0dba645c24a9bd41b5f2c6b7. 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/GBWUL2462170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa563a5fb473f4488d3785cfb33cd040bd688a84acdd7324e452d5e1d4ff60. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBWUL2462171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d643d4013717ba4c96034d40eb13bf8a35b85ca1a64263f16b41938291c8e03. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GBWUL2462178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b10969ac907182c44f9078417311e671b7f1ff9638acc4ad6cb1f1edec4fe7. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T07:59:40Z), 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/GBWUL2462184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d23e6b0820e8dd9f13e63b5f274f5507dbb7e76787cb2bb33d51ebd415074. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:57Z), 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/GBWUL2462187.