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 0xfc48a481eb8530ac903612b1e29fa9cead61fd31dcbafe25e5761adb37f0be41. 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/b73b75e6-67e0-4e80-bc42-b97b38f1844c.json and https://artists.proofprofile.net/proofs/artist/b73b75e6-67e0-4e80-bc42-b97b38f1844c.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 0xa34f31871828f35213b645fc6d0b15095fb8dc8457af0100cd39b6872ed3b11e. 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/USA2P1438792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9e0198ccb9a5ae87ecec53f95424091f8eee4396b093c179c1cea9a3384d18. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USA2P1438793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bafb7cff312aefe15964fcc64323ce3a5e18f5a30fa0d6a8f5bd0eaaa3e974. 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/USQY51587928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c2b000f7391a6cc0929eb3dcccc376421e7952589c0019d6dadc7c1018b71d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USQY51587929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c72b0616a243847eb07ada9cd959b60c75f9e1ac8dbd0813d17633b4ee8d4e1. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USYBL1601038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd0661263986f7bf08f686e9b85597813023a1eda903e05567ed6bb954f8447. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCADO1893106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe076d5745ab1a4ead871c847477bca3dacecd2bf36129aad7cd0d80c04ce1122. 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/TCADO1893111.
Music Is Pleasure /// No Place in This World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8c6aa4785b3fef34901d7628dca983430f3dbeb66552014133236e54a649b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA62062641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180339e5f7a6c6305e64378395c6b76798e783e4eda1a3912f4e9b520954c0b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAEZ2090713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58334c8ce8747c8ef42c96242c22b07fdae66785495c957cff79c72b7a264004. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:42Z), 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/TCAGA2271353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d59eb1dc035c55fcac6c6255e184035cbb1fccf4b681a5890e8bd0a40dabdf. 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/TCAGB2293137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58334c8ce8747c8ef42c96242c22b07fdae66785495c957cff79c72b7a264004. 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/TCAGA2271353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a373f6774e7259e5119da23feaa097dd180dc60354d9afca98c3b9144fb03c5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCAFZ2235779.