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 0x553abc10082e70df974ca52fedad8062825ea68cc1c6df6333c16edced00dfbd. 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/2ddbd1cc-020e-4429-92e3-7456694c191a.json and https://artists.proofprofile.net/proofs/artist/2ddbd1cc-020e-4429-92e3-7456694c191a.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 0x3124b05cc944aeaebbca066e2544fcda8d65cde0928d19e032fd003077c203d1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/UKACT2010180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14acdc225c48acb7a4167bf358330c0837242049e5b61c0ad1efe0ce4270dba. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USS1Z2001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76568f7474c45a2a408e1f141fb63c0dda196b73caaf18765a3556c2c9a61dba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:54Z), 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/UKACT2161045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995318f872e89d2a72bee7ee1b2be57a130274b6c0d33bafab3af13d4acb5edc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:20:19Z), 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/UKACT2161046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcf003345aa027fc026b782ff975e5863e4857afa52b3d3fe76692f9700b05b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US83Z2125691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e06a116e7ce07cccebc322f09b29f22fd28439c4cf6e878ab3e11108040b6d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US83Z2202175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf7f8a9a1528e80438d2ae03078b10feaf76b594b51761f5cb400ef7544744. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/US83Z2314684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5221f393d4a337e2c2db98ec913e4d8194e087c781923bc6f8bacb60cba81ded. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBKQU2342420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e1d3db1438c150a216a2fdb0d142c3ba3ab0adca7752609a82f76633cb3c2. 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/GBKQU2366438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119c759447201f4ad116c3ad67412b9c8606e24c37d6e1b8a269ddcc5d02e11. 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/GBKQU2394166.
Algorythm (Kostya Outta, Weird Sounding Dude Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde041c4af9fd5b3845252551103bca861299d5277d962cde600bcc50ef209c19. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/US83Z2475378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611eb9c001407332a37d0925cfc13b5da4fa181ea24a89213692db1acb5eefc3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX282551474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe309cbbd2faa5df96dcbdaa275df8ccc3cc4a42445eaf4c681a5d7e3d8488bfa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXBNP2509401.