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 0x6392f06777473918be2c3e325632575017d0d9f590acd55cb1edd8ee64023f89. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2c22a5f-9151-493d-bbec-822c2284a301.json and https://artists.proofprofile.net/proofs/artist/c2c22a5f-9151-493d-bbec-822c2284a301.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 0x1595acb18c82510e37cc04a4ba29d2a3fb9bcabe190938416d66db95b3f57af8. 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/CAQOI2410565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa295cd6e0b555aa322888ad535dac54efc72fb3041e1c5ec430430a92c07c28d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:20Z), 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/CAQOI2410567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3a1f98291d0ff9cfcdf87033271111168bd2c40210bfeeca9e8b35893ac54. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/CAQOI2410569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489284b4a207b086965043bca3ac1d1adf469d3e0dc9f7490c48cee596564b79. 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/CAQOI2410627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977b8ab78fe2ef00ec70e74fd14bbf4f0828fa6c8a495bf83949095d60b4afd0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAQOI2410628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486c345e1038f106538dc457f8b91ac0c8c80d21428c615b7d78655e1d41825f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:24Z), 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/CAQOI2410630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5856f436950c5356a4850a13ce517d263e2a6ce65d5c89f62a441c5688d149. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/CAQOI2410633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b901741db69aa7df6a420a9b1f8afe78cb487bce94811a9038e019125fdf9e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CAQOI2410634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa471b5470af9854ae73ba5fe2ac150a62d2835d1127ba9ce21c02ca19b9038a8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:15Z), 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/CAQOI2410509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405c239466fce3ad458080993c44439170942fcecb0cd7b963f75a97cae4ebfe. 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/CAQOI2410551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97561019307877561e51d014321b82cde41bd0c65956ef89ac69ffe0dc069d6b. 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/CAQOI2410675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048ec4cc7aa286ca72c5793216e8a3fa5cc1a2c638b49d0347e523fb1e384ef4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CAQOI2410678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e08110fccb4bfdb15bb8430049bae58f703f7aa9ae48b3827208833aa7ee8. 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/CAQOI2410495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13834ef344bcef4704f1e21ed6d155f39c60fbbe1f34809df55f07dcca9660. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAQOI2410496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b38a505dec3100f288dce949357614509e43318b2e984b248ee0e654987890f. 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/CAQOI2410503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a992268edad858494bdbb56daf16f5491c8ffa521a20ae44e73773fe3ef3d37. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAQOI2410504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f85964cf4eacbdd11884ba273add609a005ba9b6e802f8c80271811051bfc5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CAQOI2410506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde68841e7dd3779bc31f307532eebc066d3fabec1dd69e59b79f1e3cee628f55. 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/CAQOI2410651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885d45974d941d2a44a396320d0fdd9bb33d79adf8c80f9106a955b549fe144. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CAQOI2410657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b8ec13a74ac5fee9927afe208d0d385a851aa5f8ef9e605d7ea1a22ad6049. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CAQOI2410661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7400f6e0c3e286a415185091e2ef438d2d2ca18c53d2224e2c6d712e6f09fd5e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:29:11Z), 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/CAQOI2410647.