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 0x0bb7fd348092bdf47a3b8c0fa8c5b7048f58d85b2d286f50671ce2468be52556. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d47606f-57d7-4ffe-8c82-21c8a321dc4c.json and https://artists.proofprofile.net/proofs/artist/1d47606f-57d7-4ffe-8c82-21c8a321dc4c.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 0xdabdcc5c1fd3394be70ecca0882a9c24cfe72f3bc21e943e8275f0c067486f29. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUGBT2230806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d5b4d52b92d3693508dedd4ff6b22dbce7f353e01f14ea8ffc23c3eedb0e36. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2230809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63efa4dec25f0f79dfe6bbb87e1dabbdadbec53fbf9c22fc274fee60116a57ab. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:20:05Z), 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/AUGBT2230810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b15432667fe4becbacde2cfb4eaff0961f3c3651a431e7d6eef36d7303a749. 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/AUGBT2230812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6479b1c1d6f210ffc72cd560b4906b831d2fd0581db8bc08a3809940480babfc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/AUGBT2230813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad63f50b1255d5f313ed6910e94f144073b0a57009a7bd69e7c764499147ea7b. 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/AUGBT2230814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fbd1bfc6fd99707b55003a9353025bf7735d011175dfb07a5fa593eb956ca5. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/AUGBT2230815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5012e1f506269948817b76a92457d1c7a8a85a72bf2828c23659442057eca0c0. 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/AUGBT2230818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8051ba67a56d4782801b358912be938ac95b3d8956ecba8beab36d3a9c3eed4. 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/AUGBT2230820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0d6af56d29446be6b5fd182704c7841793be22859bdbad0448c6eba39fe097. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:33Z), 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/AUGBT2231032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9116c8bc771c066ae331a6a464cce2060c3b246d15d8dc9b0f7018b56ee6a7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AUGBT2231033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13fe9b030bc4ebecc9d62026f9d8718948bc78803b354085a682a0ce86f410f. 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/AUGBT2231035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6312f59726715f1ead211375814784d7c987ad99b0e750f626bf47de51eca77b. 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/AUGBT2231036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5ca85a272d249974af45b61a3c9c05686f9bd792501f2b90204c418b7c2fc. 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/AUGBT2231051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bc8c54f3f30bd7aef3c73d7b14b2ae723b92c1141e964b2349111603ac63c7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:58Z), 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/AUGBT2231053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cac762da25cc6a408dea86df16976c6eade560b0851697b071c49d3703d00b8. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/AUGBT2231054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa000ddf91b6d99800115ea66e4064a8dfeb57bcb0c0fe1b220f4660c884e28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUGBT2231057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5213d73b0c34cf95321e7a1cb0f8632e1a0d8e32fc4bf92820ad8beb14df299c. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/AUGBT2231059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08c924a8ebb70a9c037b812b2cc2f2be53bd83ae63bab5cf5a15975ff8ac852. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/AUGBT2231071.