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 0x565565ab5d5174b9e98cd5de77e9104c5d27b622805a9804d46ee13bb0609474. 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/3ec762ea-9121-47bf-b144-96b9d75a8fb9.json and https://artists.proofprofile.net/proofs/artist/3ec762ea-9121-47bf-b144-96b9d75a8fb9.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 0x7f05380f26d4398533c24e424feeef99fbf460e873d35e8f58360a70f1e31e9c. 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/QZS632178483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6932ed5322b70b056eff2d3eb70eede0c3ca28a01edd1f9b51165a46d87114. 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/QM4TW2229152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964aa0668a88a66aa392b977196b768653a20a54e9a53bf30438f071c8a300fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USLD91741553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ac0ce929eea294a45dd34b2a4bc2644474e0ff02568c94c1b71931bc7a28a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USLD91742193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2e8f5dcf55629ed041bb8e4e4259e0a04907dfc32a25a7210cda08fb6c07b3. 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/USLD91742194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8589c99e2c61f7ab475d5277684cb60a1daa76c4eb1402b39beb548a5d508f. 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/USLD91742195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d053b85fef37660ffb39eec8ffcc55c779851f50c35e170750b683ddce06591. 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/USLD91742196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681be1106eb23eda4688e5d7a6929d104ff08bc52ceb8f6155ad5645b79c7dee. 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/USLD91745571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0899fdffe46d8d6cf5a6d9beae9d8c39d2b2d3962a08a076ce0cf3f743c063a. 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/USLD91747612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f203ad3f1c391f0345156c0492d503065889872ab6cc7dac001a9a0777ac622. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLD91749089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f22501b730ea4a1948db6bf42e45d43591e0c744fd9e4eb2ad9ce85ee52756. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:04Z), 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/USLD91749488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66610c7e38cd24de5f8f16e75ce853f9b55f3198bc2d1e5115023923b7fb87e9. 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/GBKQU2429659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83981030e54ad73e90aaedac997dbe7ffe3445d5a34af0ce17ee71ed5134e870. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMEQ2442282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066aae928095061c06bdf1bacb1ac4e333f435f006d28cc09f0740583542f743. 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/QZNWX2465062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a86a9ecfbabc06f6d2dc7d45058c793e66a6205271dda8a2387953e4d0747e. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:49Z), 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/QZWFL2404303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d4eb0f47c94108b624a28968caa1b8cf398f70d463c0b6831c4d36842915a8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFL2404306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235ccf857382063a6d224cf6432dc9f2a1c324ab9352cc18f6421b51405d0452. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:27Z), 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/QZWFL2404307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0099cc0915ae42a3c3c9a8b7ad7278489ac03440623c45936557ae95c9d411. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3EY2558578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21cc1ba3188c0d80033fe2922cd8df577f2ea4584b58cf5203f3e225946b1ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2488577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff29d6c1f101ceab51d06155cafa0a64096c445f4a1dbb8152a775c3a163ec. 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/QM4TX2488578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2d7a5294d9416e92310f15926712d71855cdc430749bbec5163d8e55c45483. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2340548.