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 0xf48627b80f5503e22c36c127decdfc40212a6be485dbc1af325af644214d2c87. 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/43e59cf3-60ab-430c-87d1-a2ee36e13999.json and https://artists.proofprofile.net/proofs/artist/43e59cf3-60ab-430c-87d1-a2ee36e13999.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paperbagz (feat. Washeyi Choir & A1 Krashn)
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 0xe40759bc6acc1df9593a84312d17a0396673f51a93f30de3d7045d40e0088ac4. 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/QM6P42474283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e69f388451a3bd03994e425ea6ca44317d8e4751260f42e685c12a96bbd144. 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/TCAHQ2392693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a84a650155562b8c550881d290a5b00b5a28baa413b78805c9b90bd36c85ac4. 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/TCAHQ2392683.
Clint Capela (feat. Da Bix God & Jay Nice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aebc621892aa68ed391540625cac23b59d8c5a17e2c61c655358c0de226cee8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAHQ2392707.
California DMV (feat. Mistah F.A.B. & Bad Lucc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb01b0856dc666c2c33a8f0b88f8f72b70942b225c1dafe09500c08b471e5cbf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHQ2392716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33b32a58e301027098dd8e235eaa9162b5f7208961a3f2a19f8f70a8a240ad6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QM6P42474293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef79032f6c42e4c8bfb563cffa52a378febe1f732370ca580388cf1f3c1494d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCAHQ2392727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352c836290164e366eb0b396c9a7eeff11fe9d1546b2f13c8e908910015ca103. 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/QM6P42474294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fdf194428a6a6a3c0ed09dfe999a7bfde4e2ee965ddb54daf7c3a355f83d17. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZPLS2444696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519a64fef6b9bb5c4f69651e3723d2313537e0a7ebc2aa8611c32f527192b5a. 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/TCAHM2325992.
Golden Era (feat. Crisis, T.F, Bart Oatmeal & Washeyi Choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca061cd38df3f7227f5b961a82687d57af8bd7e74fb8915c2d46a49991a4013. 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/QMFME2398591.
High Moment (feat. Crisis, Papoose, Bart Oatmeal & Lovey Jean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b9ac29b878cec41ed6a19bb1d79323cd8adcf09857b894837efecf89da6592. 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/QMFME2398592.
Agenda (feat. Crisis, 2 Eleven, Da Bix God, Jay Worthy & Bart Oatmeal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6539025646db8e8c46e5bbf34498492726a6caa1fdc34274752506c147aa6d60. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/QMFME2398595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123f1ff7c5321343a353eeb9bfa668775d9a50070ea181c132bc5e5e76edaee2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPEW2599702.