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 0x3f7fe99fa0d98aac4621cb13c6129910e04591c8728c95b8a1b9c7261167fd8d. 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/9a21aa45-e8c1-4bed-83e6-a89b072f5c27.json and https://artists.proofprofile.net/proofs/artist/9a21aa45-e8c1-4bed-83e6-a89b072f5c27.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 0x25536f382623bbeaef19821512ec9561258a56142d22ab905a1d1c281384445c. 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/QMDA62277687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d462de99c830783293db1d311067c10f4310cecb9ddf7e984f598eaee0b0c1b. 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/USDXS2303124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712ffc212a02a3f99a90314e44e06a3056d7efd49665592a64f022e4f3f89a33. 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/QZTAZ2351977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0384f301d4594ac29fa984e2956e1cf3b90e1996bbde9066ba05b202565ebd5. 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/USWL12302787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f40b8af5bdbb21825305df2a77c7cf3bff99a93060c953dc086910de3579895. 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/USWL12201660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534775f3415dcd0269b8e1522721df549b8e92db119d49586981c78af873eaf4. 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/QMBZ92019263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc8b795b181a7c8ab65b1a9ecd15d43d0cea37db095e5add7ebfedd6c920335. 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/QM7282434242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361118c2ef8dffb3a9dd7164910cff6f27b594e9fdf91d34a5f0ea918cc88aa. 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/QM6N22426446.
WYA REMIX BLACK AND YELLOW (feat. iZaak & Pirlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a043c0163de33816e3420e117a130c846ff99b498f5e819050269cbddc1261e. 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/USWL12401959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d2f8583ff5426b7f0fa4bcab58a590bcb73a32a42123a2d1b9accb50d31c4b. 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/USWL12400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45236bd417952fced399aa982698bfebf6a21699b2ae589fe76609062fe6557. 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/QM9WM2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab90e49085e0e9addcb9210f13d038c7e6304d2dc3948cfd75a1fbbeda876f. 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/QM4TX2161719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dddca9a2efe18944adc8016979861088b750b1559562d3c1193e67b52627eb. 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/QZMBZ2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccb592a23c7902d94469edcd21174751227122ae2d04690e17e34ed3f9ac24d. 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/QM4TX2360472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dac5e230463d03a9e443b38168dabd3bee65a0cd23fbc312d7a619e4d1c7568. 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/QM9WM2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627f634740f36a756eadd0d580d84576c84165ae82645107416d583495ec2102. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USDXS1600292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37587d6fc1976ca2bac6cbd998cf7d33b99b2983591804e1a9f2eee94fb95b9e. 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/QMDA72486987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f565b67fc592608b3d83cf0a33037990afc3230222eda4ad6f21cdbff75d1. 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/USWL12400781.