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 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 0x1742d0c058313a7dc75cda123cf3c18bc2bfbb592028e8bb86b6a2f0b13b0df0. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/145edcc8-aa1d-45f4-98db-1e6ef39622a7.json and https://artists.proofprofile.net/proofs/artist/145edcc8-aa1d-45f4-98db-1e6ef39622a7.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 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 0xbc4e3f7029c24f45df3d3d0449c02d47aa55429b56e4c1547846103d2a1f1f8a. 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/USACX1302463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd593ffaac41d709e43db70f9bfc0a17318abd46a66507750a4e2c5337b8a0887. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM91740210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a892c194868306045031d6ce773dc791db94cdba6387bce5da6c9e51effaf. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USHM22478189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79455215041f3b7d3a114450195da4788686fa68822797b4a5db1ee1c1f82b85. 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/USHM22478190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f31c39a59b3164377e412eae172c74497d6d9e1f6fa024f0068c560734150. 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/USDY42388635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2f612aa0ef8c1fc324eec3e454362a6cc19a5fde370f1b1cb4bd6e745f089f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USCGH2372533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d279708819ba536d86f7a3042b8f4ec9fcf99e2ab7b845d0e414beb7d4d807. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022282826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f48faf098ca0564498f5b4f0a235c29183d9403be1284b52be52bdc608bd50. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022282827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c73fbfa5f43a2cecc30b9dafe9dbe3b707d93aed642c19ab2067dab2ab083. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USACX1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb998e645c866c19b6bca91137a75d578873fd43bb3349c72a31fdd6f8bf6f9f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USACX2002272.
Return Of The Real Hard Beat (feat. Deepspace5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a78577cc2f44c8b55c3aed7960cb564efafdc526f38fa9a231c5c7aaf7713c. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/USACX1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd464752e43e0d4a414a88b6690399ec562e505d9a4018feaa82e0d2d45a4cb. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USACX1600819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa19acb6fa77740895d7733f9d8d3d0786cea99040c018277b4815825faa55e5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTAY2448688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0906fc55963c6d00a7fd01deae8b4f32241b3d2a671dea4dfee9c5c8f9df75. 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/QZTB92464426.
NOW. HERE. THIS.: Instrumentals & Acappellas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6be4392a3a502d96668461fa333583c9e9bda726167e3e16b9d7b711d8dfa46. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USX9P2435091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79455215041f3b7d3a114450195da4788686fa68822797b4a5db1ee1c1f82b85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM22478190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a316fed61a2426659675d9a2715600e7d6fe757d3b79d90e79349653e91fa2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USX9P2435093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414b586ee7039317cda687e1fa183c4b3d0c42b7a505a9126b9069668c06d89. 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/USX9P2435094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cea4dfbcdee1a997f67ddff3a607a307585e666b6e3c9b3e27ae76a70f1a66. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USL4R2432117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a892c194868306045031d6ce773dc791db94cdba6387bce5da6c9e51effaf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM22478189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f31c39a59b3164377e412eae172c74497d6d9e1f6fa024f0068c560734150. 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/USDY42388635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2f612aa0ef8c1fc324eec3e454362a6cc19a5fde370f1b1cb4bd6e745f089f. 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/USCGH2372533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a99553cdec29cbb40cdf6511d941f3cc227789120702294607400bb2bd733d1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USL4R2432118.
Officer C, Yo We Gotta Put You On! (Maxi-Single)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618bfc9b7bb9c8b2faa78f6ff84e598060193f1abb652207e0dc88e485359ef. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USACX1600025.
Travel the Map - Micall Parknsun Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb8a27f604ced0fe4072663e6d30b122181a380c006add815ffd1d9e9d4676. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USACX1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d425c54718d33c96d1ebd96cb82c74a711ef85744ef9cdb866349d68b9b781e. 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/USACX1800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a470b7fd2410347c256bbc598ade948bdb53553a909ca9c9007789f1600066. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USACX1400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8701194170f585d785dd5d1e0550f54ff2bdd3449b46af8fd57513b39a3d69d0. 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/USACX2100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00598bde949e1714eae27da08d183eb85edb710d443c53d772bc48fd89476e33. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCACR1610518.