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 0x606d69aaabedac99520b1e43ce668af5b970a805f1964925126265aae5b53e17. 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/0ae9da3d-29e7-455a-b6fa-e14cf187bec3.json and https://artists.proofprofile.net/proofs/artist/0ae9da3d-29e7-455a-b6fa-e14cf187bec3.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 0x42ff787df3d1cfcfff8821edba143ad47a747196c020f315ba9d1bbfcc670360. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZDQH2255887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d346dcd8633495102178ec58a8ccebc8923769563aeebfc9110cd7092005f2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZDQH2255888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752168c2b7684ec9018ced6158233c25d18a8d16eb67133b601b717db983319. 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/QZDQH2255889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4390d219426040d2997bf082f5e262462dbe69decbfe6246531af92f4285778. 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/QZDQH2255890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3030f80bf62db3b29e0f3a7e993ed57de7bef0cbf653d864c2b97955293b3ea6. 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/QZDQH2255891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4548c893649707edec552d46c49a0d0d89d45f7697a0fddd2786450a34005808. 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/QZDQH2255894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04abb337f8ffd983e6e148eddc05c6bbd4606739189b4096a76ba18039c1eed. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:47Z), 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/QZDQH2255895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a14f204aa611f2f5c6152b63d0adde7031c16f77feabaf56882de2a00ac2a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:52Z), 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/QZDQH2255896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa11dd76e43ebaeeefb79f3ede2c1340a6a9b3da38be557e0cf43c8e89f904d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDQH2255897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6601ffb01c1cb3c21904762d9df1b4fbe388772cac65abeba80515e9d58085cf. 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/QZDQH2255898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80e84be335db66dba8e7f4e70258ad7f1530a524ac0529056dd8f0229e042ce. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:09Z), 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/QZDQH2373392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c036843482a6be9369d8dec000c6e8060997de0b261c5571e6b1bd907f9c98. 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/QZDQH2373393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afeff353f5498c74e8b0b9bfcfc5124316bcf6418e60aa38c12c0ee750e04e4. 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/QZDQH2373398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd034548b2e944dbdfc699a90144e8cd16565da18a712453d49a2ba79a8b2f0. 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/QZDQH2373400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ab68bc29a412011c87e63fe9a42ebdeb3cbb9ce625beabbe6493a0c3fa743f. 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/QZDQH2373401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a9b3bb864f806d3e4473218e2174a8b8a29ff57c3bab8d995665302f435bd8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDQH2373402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10534da88da95f8d14ec5860b463ed5df4886d56cd1c3d753856efe5271a500a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:16Z), 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/QZDQH2442116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0cfdfb0e2ddb33cb6c7146f55e65e74e015f6bf2d477cee43f3a6c81442dfc. 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/QZDQH2442117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1742d4ed1ac9ad536e1fa49253e7ed1a8d5d2bf827aa558e5776cad692cb1d64. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:46:48Z), 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/QZDQH2442118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d7bcba75c4cfbefa7b86b487159c8d34ae03071ea4a3ca20d4e0eb15232c7b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:34:13Z), 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/QZDQH2442119.