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 0xd3627be87b20d43238834bf9b300a7b72ccb782abcbbcf6d5460c5f8fff536f9. 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/d0a83bd7-2614-48ab-a14d-78c523b80f61.json and https://artists.proofprofile.net/proofs/artist/d0a83bd7-2614-48ab-a14d-78c523b80f61.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 0xd6bf5f1fea0a053c82aec1b9bb83f50e5c0b652d435ef32131969fcae5d53b9f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCACS1678829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16306da92afb8cb74605fb6bdef14c07cda6fec98e73423b36ce4e575f5239a6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM24S1841078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7066dda29fffeba44700975056081b5cfc255f31b4b6444076f049e20459c40. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USUM72102514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980fbee3846e5cdd1871a777d4db73c87778ff62e7133d2fd2075337433f8386. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USUM72102515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f99114ce5297cc1771858714ff0c639064401c0c3e80f9058b7dd07386d51c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM24S2302433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa513bef9710a8b28cfe45ff45d1f7ea014f5ef9b6dfd1c84c67f47af1d424227. 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/QM24S2304246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff91a626612cfe4508d43ac2b540934ae486d52fb9f348fd069cdfafc1b3edd. 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/QM24S2304245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b4ba15f499498ed385d58d34b1521a794448ec5e5031e0d35915d3b0055726. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QM24S2304960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca2a8d2103da69c2a2063b36902dc6c2383daac16e45c1890e0d7893190024e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM24S2302432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab074489e6a35188efa3ffd32d5079eb29cbef4f482b5526dde3c26c5240508f. 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/QZES72279778.
MOTHERS POT (feat. C.S. Armstrong & Roc Solid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73adceb2f8317810b0c0f96afef962d3d44f01f63ab9b48ac14cbae8a5353743. 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/USUYG1419393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d26a24f1b9356070ef84f3c303f6f88f188289e4ae5f005ef78fd88556005. 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/QM6N22459530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0931827f90e8e6497aef46ca98505ef4163db005f7b008b1bee2e80bd74eb5b6. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEUM72001453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0931827f90e8e6497aef46ca98505ef4163db005f7b008b1bee2e80bd74eb5b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72001453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aaaf82ea83365918875924f5ce2abee3760fb19136eb9fcfe4d5ee3af286dc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEUM72004959.
We Could Be Good (United) (feat. C.S. Armstrong & OSHUN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9bdc614747ab329fec68840fe865050b8476c33fdbed77f5fc1d3fae3b98a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUG12003675.
Welcome To America (feat. C.S. Armstrong & Angela Hunte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb0c6dcd30b2a141ed1879ccf721e05909769d4e23c5b6ed59b71a9d22a143. 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/USRC12100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d26a24f1b9356070ef84f3c303f6f88f188289e4ae5f005ef78fd88556005. 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/QM6N22459530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2919d6e3b03e8a00c6d7e9f2eb93793199e24946ed84eb324476c77e5adbd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US2S72034001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55cafea6213bd4e9a971b63ea9f882c449d52905590be8722be39f65788a1ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6680916891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e49a004503f9ae78a478e036d4746be83f3b803de25433188130e4be0cf0371. 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/QZTB82495872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f63c9457259fe310640a10591e756c598f01f5ce697fc48fe2aea3e89656247. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNMV2405873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1379a1f115783734fc7417b8c23eb701c77f8a13f12da9c8e63090f3724917e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA62298930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9d0be05c37acdb32f58769351bed3221dde5d860f37e78598007cbb5d585d0. 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/USA2P2426086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e188b61df3bfd23fc5dab5ed341825f944abb49d2beca0cbee9040e80da2d9. 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/QM24S2303780.