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 0x5160623934778f4e6996be4de2eb93ef92e7e626183edeccccd1d91c23adc9e6. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/badbed9e-593d-4fca-9ab1-d49c3cfb7f95.json and https://artists.proofprofile.net/proofs/artist/badbed9e-593d-4fca-9ab1-d49c3cfb7f95.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 0x0ba2ea9d7887677830c84a415998f3155d7c391330a59e412910c1e1160e3331. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ42479738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e4d4e323c042d9ae20b15a34138a10835e6c648a366ee55cdc01587232c54d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6P2425213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f33642bf6dac5c533480b85c01609c81e337452c3a2080195cfd6e259549dd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAZ2451689.
Foot On Knecks (Pressure Applied) [Extended Version]
Foot On Knecks (Pressure Applied) - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892aa1bc3d55052b9609eb77065321c02962c18cf533ca6474d145c18cb6bd2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFK2463212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9396f8b494f327ac8ecdacc961a7a887dbb025c65c85346dab7308b0d0712a0e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZWFQ2406411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58794e6c63fcfa91d30e428d03ed63a966937260372b7a4ff4f489cd886fb782. 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/QZWFQ2406412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f1409fcbc90f35f37728e7a37145f6f30f79671d7f60459e0282a15a1b5188. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZHN72599871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d528e4e2270f916c3c2296c0bf7482c23601325eaa9a7b6d066c9c6327c213. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZHN82543399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ad36f2776b45abb9e8f80a6e125920ddab17cd7321cc1c85c9efeba142a3fb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZHN92564889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9712a9cd31fc70bfafccb965afb1ce0b7e6412c3c360c5a0448f0a6cfe05879. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZHN92564891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72211d2c64d22087835d87eedf8054df22b2c54a220dcdb7ceffa0494cc1a8bf. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZHN92564892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980bce2f99a5c40ec0e61c454a8d4ca5f1c780152c3e2ba32118767a18da905e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN92564893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6f639bca04bc10778cc4d3f2063196a4d6f2774444f8f52053376559fac417. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN92564895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248a3c11981b0b0052c7f2ca2bdda95c41339953f75b113fc8f283ed4baac037. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN92564896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c0085a99ecebb93596a38be822dff79c198581cebbf2be34c7b4b1e4089ac8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZHN92564897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238bbe9580bfdb20dcbd9c529c18005a8efe08cb9fb7c7319d0ea8285470c30d. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZHN92564899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a530302f16a27e883ec989f9fec6e719b9ee641a982eb2d277b77f66b556318. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZHN92564900.