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 0xcfbf8fa9ae52538603191fd760be06181ca1957da62f2ab76e3d9e248a161a3e. 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/fc937b66-c23f-4cfd-9f1a-f777575c40f9.json and https://artists.proofprofile.net/proofs/artist/fc937b66-c23f-4cfd-9f1a-f777575c40f9.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 0x8b561b8276eeaea178e6a3ea22046aae240adc62105b5cfddcbbfc349ea6cb31. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BKEZY2400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefde615589ad7e26a1cc8687a35aa2ff2d28b4b3850bf4d4a642cf93608c328. 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/BKEZY2400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f5ea1328021660789029d9e40b8a56d4969b06aa7fcc312c61507dbdba8497. 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/QZNJX2412900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73265e508ef5987c5e2fbd9b52d45e4108c1bb04089de1a5d98c4c2985ac7fb0. 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/BCIH82401666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6c77c823583f83e29d0cdb3479ce081bcb7725e694628ae2acd703c5863455. 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/BCIH82401579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fefcd199859087899181c9534b0d894cf41700fac8af031d6a462e6ea0107f2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/BCIH82401562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e2b57f36c6a60e5229e9d33c85b516a5f07a59ec51b642a59ea0edcbfadd9. 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/BKEZY2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000077fbab40a461d7bd12bdbf490eb64dfde2c547640f3bc90dda871103b24e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BCIH82401348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c4b256ab958a0767779da5f7648079c8087ab0d9104e156ceafb7e005617d7. 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/BCIH82400709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69443d37a1f8e34aef7878c77e4e3280a4e72ce0ea3aada7fabcc0f6dd3ce4. 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/QZW9M2353375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a175e9d7dfa2864c047b2e10f96d2aecd1ba55596a3dfa1b3602ddd4e31c6. 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/QZW9M2372581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950a3c871097f154df647b4ec829f9f9ecba53e44154d15edbc6ccee71889518. 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/QZW9M2318593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e6e164e5efe2f8c2fa0b2ca3c45830ed32ac7ea2ce264a86a30fe0ac58bd6d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ESA112427401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88d64fc243903ea6ed7b69162e35ff20d62bf6129b0b47fdb114ba5a16f2361. 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/BCVK92501784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14511098dc09ebc3aea3c949b63db38eed16d663cde5493d847f46a08c1c241f. 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/BCVK92500774.
Robot Funk Inter-Celestial 1.0 (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ebaf44baa64a473b5dcb998c8285a4e23384fb85861f10e9c7c47071ce83d. 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/BKEZY2400687.
Robot Funk Inter-Celestial 1.0 - Super Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadbefaf2337592e090184c5437849884868f2ddc42178fa40b711958eefed87. 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/BKEZY2400690.