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 0x02b4b2da3552943aac4663a5a624299ec14ed999437e943c45db8d2d215672cf. 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/6b6bf22d-567e-4c9c-9a1d-09cf01a0e908.json and https://artists.proofprofile.net/proofs/artist/6b6bf22d-567e-4c9c-9a1d-09cf01a0e908.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 0x596601cb41c12bc41a0852f0b15d8df515ff6fd62e6208c7ae840db9f0c8bef0. 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/USZ4V2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729cec5698f0be2b98ea5e12c49deaef40d3242f0ed910de5238d9fc21ce3af. 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/USZ4V2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729cec5698f0be2b98ea5e12c49deaef40d3242f0ed910de5238d9fc21ce3af. 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/USZ4V2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a09633cefc846c5b0cabdbfb0b33a0a233e3e5e0000954c1633247c3a36479a. 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/US39N2309020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d5421b1c7b8ef5a3003687bdbfbb3e9d4a58429cd122cf0e96f17211978d3c. 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/DEEC33500570.
Caminho De Dreyfus (Rebolledo Remix) (Adam Ten 303 Retouch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9580fd333e8ac17be0be2e83ea8968d08788e58f156693d2df97cbf59a31063. 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/USA2P2226321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e66183f2828daab80e3e472c477d961be422e53dffe918093a3801484e52c. 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/ITZN62100374.
The Best of Crosstown Rebels 2023: The Year It All Came Together
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7f09d98e79be4acf43b040aff8865de996131f66434a140625054fcb85a97d. 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/GB7NR2329203.
Renegade - (Adam Ten & Mita Gami Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed011e5a52abc566134787c48784bd740fcef07fbeeddc7123e0415f42b241. 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/GBHFW2400092.
Crosstown Rebels presents CR20 The Album: Unreleased Gems and Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d10458a7cc1d6b53245add9cd6c02dbc04ed70dd71bd48e631ed386b19cf77. 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/GB7NR2320208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb4c48066b77a07e74509809577acef9a752ab0c077c3811a4b73ced26385a6. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/NL8RL2440730.
Molly & Sally - Adam Ten & Mita Gami Remix - Mixed - January 2025
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec7c2fd5e7605575d33acf832325da967e02519178a1fd146ea16c270cf7d3c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBE72500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c874bb05f65e5d2a57d7ddc9132e50128d6907c0d786f575e5ea52bdc63bc3. 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/US38Y2403757.
43 Katzen tanzen auf'm Tisch - Heinz Hopper (Pt. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a7052f1a94c8e72f31e7befc16ead88685125e6de9bc9bc847191964a99c49. 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/DECY52003277.