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 0xfbe0751731f7d962df8a56f14c2c633d13d080614e3b6410c6fb52ac641e2bd1. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2296d9f-02eb-4afd-b03a-a4bd13eb1e3a.json and https://artists.proofprofile.net/proofs/artist/a2296d9f-02eb-4afd-b03a-a4bd13eb1e3a.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 0x8a51817c973951822b65563444a7a4a21c31c430642822c46467fef1e7817356. 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/TCACP1695813.
069 2 (feat. J Mfkn Real, P.Rico, 069 Dez, King Dre, 069 Molly & Ar Piff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17873f98f5bd6aba3c143f1c71a11970e776a61d0c409cb0c811691b367d31c4. 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/TCACN1610221.
The Villian (Hosted by DJ Hustlenomics & DJ Rozay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85127ba36e8f6a7c7df372b098afc0592fa5dc7edd68b21c17bfbb574fa464e3. 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/TCABN1342046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd7448147f1a5c177aaa9e7336fb45d68aacee2f5ab1ac4c34a3a08f7903e0c. 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/TCABN1342052.
069, Pt. 2 (feat. Killa Kellz, J Mfkn Real, P.Rico, 069 Dez, King Dre, Ar Piff & 069 Molly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9649bb0055562c9736ea2107a482c2b6bc5a74568e040ffa3dda895f8af1d89c. 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/TCACK1571245.
069 (feat. P.Rico, Dez, Tony Blancka & King Dre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b6a29344aecee56d8ece386d203f90a19fca137782832cfd7e3c0023d103ff. 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/TCABQ1315964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776678053fbceb819ca3528cf282ef98c7f2ba5f7ceccacf9d034d03fb9403cc. 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/QZNMU2063549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70681351c2a17b4112da96c84b66db796646f7a003a6012e7b8b728d039ee8a3. 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/QZNMU2063555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f244a7c60ff918764beba5375df8583671d265dccb7aa3c7f9f0f74c2462458. 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/QZNMU2063556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e1db2a1b6ccc45f2b24ec339ffaed936f5cd99086feb95819d448559afe3c6. 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/QZNMU2063558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcec7eb76870ebff15ce26d85627e78e49888adbe6068358be8b2d02de798cf. 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/QZNN22021987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd313500413011c174d41715f4f6ad6974c6dff62942315c74f620cf881a56. 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/QZNN22021988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b5f3ad38d8761bd1496f82c2ef2f77705a49fe78c456f1620452c2f980706. 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/QZNN22021989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63beecd055d2824db8978efb823927d79a8f3e3960edac50e83d6f263326b80e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNN22021990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38426841d7890b546e23be787a5b419dea8f444413b2b78e8c87ceee1bd4f5fa. 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/QZNN22021991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5809d98c7ae52fcb80de29866eec6185933374f1eb6b43ebd3da415eea64a8. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNN22021996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffbd592f831b5269dd5585f64e9ae7dad888990b116644b7a42e1b400c777b9. 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/QZNN22022000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0a4d0173f0cd2ea62ff6030ea01a4b9b8ce78efe067cf413af8e80071ed10f. 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/QZNMU2039108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65adc23073e6b0ef39009fee21c09f7f8127db269dd41ebfc19895a55eeb885. 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/USUYG1067798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e40f98b21f69d1726cc25d52e33bca5d922609ae6317824b6e40b16d537056. 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/USUYG1067799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baff4de6765e020c40344f9492b6f2d4bb0996604b5a92870ff81bd75c517e6. 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/QM4DW1792467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4011502754e27c59368b9a6d199615cb03a9a909052eae5d97ba4d5c480bfde6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM4DW1792470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd12e37414f540b874cfd7333fe38dd6bc62c2f3e04e0f54d7af79660e12d4. 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/QZNN22168502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375283636dee9bae3d7ec124ae4e01c740d104b6f6ca47eb3a3b1b288d25b589. 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/QZJG51708096.