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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ae7d0ead5a2d6d67f7154ddbfda8b5067003ef89bbd2ca6118778345814079. 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/6ed63b69-f063-4717-ba44-6703663a6579.json and https://artists.proofprofile.net/proofs/artist/6ed63b69-f063-4717-ba44-6703663a6579.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peaktime Symphony -Taken from Superstar Recordings
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d3e292afb66b78ef963a07ff3247f507f1d379b6a36a71388ec2a889a437cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEN061202629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cc42acd9c9d2778433f2d9bc8591994db282c4ddfeb33b18a746f33bfcfc9c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEN061202819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aa07ffa935e3b1fabde0a41958e2f142db1fb4db715afebe729e8c0794d2b2. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/DEN061401854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75711d95aba03576c40f8bb29e3f9313bd8f0b3080c76a5d728e10af1bf7ffd3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLBV21600030.
Sunshine Hotel (Just Walk On In) - 2Elements x NONICO Remix
Sunshine Hotel (Just Walk On In) [2Elements X NONICO Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7d29045e0419e82a5fc669509b2ef310963d4a10a75ca8183c70082a46b8e3. 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/DEL712410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b23bf44be2ce77e4d0952a76b9f590744a314b1088d1fb69a4de9d5bf29c50. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:11Z), 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/NLZ542100414.
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
Speed (feat. Miss Bunty) - Stefano Noferini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28e1b482c887dcd0a5f6505fb51c46905c724d93a2a8ef0115d7014bba083ab. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USNRS1026930.