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 0xe5bf8711ffa9b9569e8ad9e61b6bf10ef5131d2ea373f5b661a46f41f8359aa4. 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/493f2ee8-6032-44af-8868-f40b622d929e.json and https://artists.proofprofile.net/proofs/artist/493f2ee8-6032-44af-8868-f40b622d929e.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 0x91af2bc95f532b2338a523286bdcfa9cd044403b4caacc01e5f49df3a256cf0c. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZ93L2025181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566725eb2f8166cf7630c6cd2f972692ca34f7446f6aa2d35f8ae8aff567bba. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM24S2105612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcaa285fcfa6ca32427087b5233af501a1548f23a0b255ede848b3184e66513. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2106972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5825a9c9b2e516d08ccce77fcaf285b3c5c64fde1eb0a64664e5b66b8f8d0799. 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/QM24S2106971.
No One Dies From Love (DJ_Dave Edit) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9539674ed4d5629b478d3447314953b1d79504598a3f1a08ecb7ca6bdec9c1f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM24S2206823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aad327b0e19439a470b6d7fc3d6aef1585bd34baa24cbe2e83ee2a76fec6681. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM38F2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5f5e5f32ae37f009b59d45d09058cba4fcdc9d4347a683f089165b0870d701. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM38F2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706a0f487da7716926e5d0ae8ae18cd069fc1d779749f027cf0809698ec159d. 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/QM38F2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62bf58115d0cf24b9189b4874c28a035fba5878b642899a778088bbcfe44261. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM24S2307822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69368a70aef80f8366de81756d8b40fb2b6133e1974663f77dd4067a83e4499. 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/USZ4V2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4571b1218d2e42d3b1e4b238354b0f6a880381534d42f3b2c0e4aea236e6c. 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/USZ4V2400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb3416005cc62c9f9e572c6c59494c90ea4467cb2d6a4ff4f63dd389b62c653. 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/USRC12301143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b5038d8d63850891e76f181d4ed9e57aeb031d251771b406c9cf5572e3a72. 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/QMUY42200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b5038d8d63850891e76f181d4ed9e57aeb031d251771b406c9cf5572e3a72. 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/QMUY42200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b2f3fc67f3df30ec2a555fabe4b51004e018a6183d49f25e581b65eaed3e49. 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/DGA082333460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c0962acd29b7a8e72aa4970179a6c3fac3a96ae51c7160fbbc281d8d8d1063. 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/GBBRP2301145.