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 0xa4c0150924a940e8cebaf842b23206544468cb8b8427e500bd208fbbfa1eb4eb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94eab4a1-50c7-45a2-9232-db7dd1eec120.json and https://artists.proofprofile.net/proofs/artist/94eab4a1-50c7-45a2-9232-db7dd1eec120.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 0x839d01e602da82b03f51c1dee8fb11dc492deca129b3ae276a8da32de816d419. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:17Z), 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/USHM81651666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03247db448640c94ce1cbb742a5a6f9b76547da40d9d6008be5f781fa5cd2d67. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM81651672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa204f6407b23d8698e9f31766298dd336566ec7bb82f09ede2470fe03cff2384. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USHM81651673.
7 to the Power of 6 (Version 2.0) [106 BPM]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853b9fe8427d2722e4bb9eae615332868fcdab95b382eb118926cf62fa952e7b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:47:57Z), 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/USDY41834478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da911b18af568c1f38dab7f8ea2ba4d3b14e92e2880d329a7c55d1630eed813. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2141692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b88175ad6dfbcefef1bd7d8764119d869917290071326ce967accf98e28a22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH2141693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b13b59e430ef5138c44c716ab40e45582e30d32b0a02a5e936a77f4240b8e72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738143ed51ad834e70513e1182808a744edfe13a80c76c004a2d3630a0d2f9a8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7286e199ffeac632ed899c78dc15379b42f8b3606688c265805ac7fc59fc433c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56951e45d1afd7d746745d7800b79d603c571cc617493c78d06564a981516483. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH2141699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a72f261eae20402a464ac574670a4f09e7cb6dabc464d271201f3611ddb952. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH2141701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b80b8b3b0565d32536a6e2162f2cf5f12f7fb7fb902d02008e12279874a1bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH2141702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b314bb56b91a79a8c405ce70e06fe65495e8339c8300e533b735b12c9fbc840. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2141703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a694a107db8145b1835216a1a800e5f60aed83ea1afb30718aa8bc342da1cbd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2141705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaec00cfe688b7045d7db6cc8c46370a8cf854c2f1841eb340e6407d0694cbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGH2141706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f01d3e6434bacc31801e473029c2b290d7676777f6b1156b133dcdb7928ca6e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2141708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc029410b1e17176c6036fd1844ba6b5bb06eab717801939147fcd18670deeaab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH2141710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c6ff12f713ceb12a852ddd312f3dec8387c91d920e96af58476d546c911922. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCGH2141691.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a2c4cbb032270ed92bbbc4a1ece2c7491e9b7e8b4fa6fd20a1b4a98ee6f459. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGH2141696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e515977b4ce6b40d11fd3ceb390a3c19041e550aed782932774d8c1afbd95b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGH2141698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d7962532e76a0b788bfd0fe53df06db12d32783192a499d09a9a883ad73d8a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGH2141700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad73d3b0f4f5b38dbc75647383c7df48b6adc9d08f97ad3066517e45cc8b337c. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USCGH2141704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9234031979678736a359ddcfd2baed3f6235e81edf71e6ca3ad3e256d4145aeb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USCGH2141707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3d311a06f53e92ef4a9adfbde241a35920b04ffcad1036e81fb4b54b4ba08b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USCGH2141709.