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 0x5fd87ea59174a90eb7a0b98eb0778076aba70682a82a35431f0cde4aff3a5ebc. 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/beff3cfb-b9e1-4581-a33e-84e33de0e9f8.json and https://artists.proofprofile.net/proofs/artist/beff3cfb-b9e1-4581-a33e-84e33de0e9f8.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 0x7e8137320950efa2860b3f7038ee0a4199f951998dc6e3aee00ea27637519122. 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/GBKQU2191490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf988e565db05b6772fa5bebcabde24824ee23617cc96ffa631f631b43982ef9a. 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/DEGE91900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2067c82f3c4074f34c06501c6fa46550079c1effdb9e221ed04a2087ddd9896. 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/DEGE91900020.
Ready to Die - Mudd's Extended Mix - Blank & Jones' Milchbar Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adc41672215e6c51de416985e8ff50a04d5a5fb3b89b195080891e75c5cb1db. 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/DEGE91900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322373dc410957133216c42a92a93d13eafd87a6f4cc7bae7f3dbd2da26b893f. 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/DKAZ71834501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb8ba91417ea8d1fc6a8ce2d8f786c8b586613da980e1c82fb8101ed85641a6. 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/FR9W11727688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ce7c040fc7d3588ff1ccfc263b0f3435c214bc11856dbe57d3e919aa7a56d. 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/DEGE91900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbf268a4edba17053130618a1932c26ed2e79b5be86fa194d4508e98b9dc7bf. 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/DKAZ71818701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8bd16c5451cdbc3b63a79fb326aefea270068e7eb75645cde37aaadcdf8e64. 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/GBDEX1900500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26637ccaf3b5622f0c76b90f270220416fed729af1d234ba2bbf98acb981acf1. 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/TCADQ1839316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d590c5bb6db2bf6d0e94cb895694ee6be0d06de8b0aadd763dd0c8f9eaa29a. 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/DEGE91900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f71cf1d0ab28fd45b9d46b89142eb6f34f8d4dff67639d198e221be8b94758. 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/DEGE91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4702d84f687156a4d6c823396e4085b638c0c149b085aa548e207c7bd02be6. 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/UK8SW7000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308d4f57cbc7161ed8e21702eb6b05a41a8dacabfad9c8a68123924d6616a6a. 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/DEGE91900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb72f5d32568ab1723e0a2b4fa5ccdc306bd332148241ad76625817464cc2b4. 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/DEGE91900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0863785bb890d38d337c38c39913486f7760d1ce42f2e407af4db6637b9a72. 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/DEGE91900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b433944cc88149839c9cd777cf405e904a5bf1d649ecb502c7e141b002c38d. 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/DEGE91900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175f2ca22a34fdc9ef65d5d44213f76b3b4ac70e20eaf2929fbd0781a06fb36c. 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/GBKQU2226936.
Nothing But... Electronica Essentials, Vol. 09