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 0x94eb8d73ef13024ddcef116a89a23ecdf9a516cf2c601bd81778fa41c6225929. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a239c3bf-d4b4-46a0-811a-c2fe4b1d4c04.json and https://artists.proofprofile.net/proofs/artist/a239c3bf-d4b4-46a0-811a-c2fe4b1d4c04.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 0xb0df00f386a94ab10077aac5caab552e46fe4b6a4ebff2219ffe65bba84c35fa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPS801731226.
Present Day Present Time v2 (feat. SUSHIBOYS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f8bfe3a5ce382cb5dc8d2edc43d19d8e1594b44d3e4885083c8a1b32b5be1. 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/JPWP02202245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b96741271a9c5cda358e860bc8377a1d67fec5bac50d0a6dc305d10be31b9f. 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/JPWP02201265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541ce173e02811a0d5614d11cc256132c3533b99177accdccf625af8e856d9de. 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/JPS802351448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed405e4c6bc781e97d0e33f3208bb62eb0d288a598fe459834e994f6a24bd87. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPWP02300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c8eea20599178d5c0fc1af0f87bbbdaf8923d43fd616dafcff297cdef49013. 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/JP92J2500074.
Present Day Present Time (feat. FARMHOUSE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f422e2610d3e92f3f7096cbdf53a85e5598e72c08353a5a261e0bee7cf35ea. 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/QZNWZ2276377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa87871c27b3995b6155b5c61c04ed71fada8b885d2e32c0a3358b96d8b0047. 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/QZDA42249484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05869cd880ada72382cbe56a6012e1423cea45c12cd917bde7e8feee3b5413b1. 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/QZNWZ2276378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f815447a486a91c7d451dba8d5006c66118e622d4c4416253364d968930e3c. 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/QZNWZ2276379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a33188d241ffe54a812cd6afe06a160d431bb697afd81f0cf19dc726128407. 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/QZK6H2219976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ca6cccc843bd8127eb90e17664f1353b7b1731f04d72c9c14bdc766d47ec2c. 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/QZNWZ2276381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa65b0de85eedb8071e77020d032627b0e09e3e5ea10dfbcd8237e5aeff7e96. 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/QZNWZ2276382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54364d68b13a45fd0ee3b3a07671a9270d487ff1e29c46c7f7dcfb224c8c96e. 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/QZK6L2286666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77034219fc85f1137998f5fe08c9e13859dda1266806a13d2b91a93e8b0cae7c. 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/QZNWZ2276383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fadee45e5e90112ceeeb5a81050074953d1d8c0ea20226fe1f52de529d1f598. 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/QZNWZ2276384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb93dc25a4446118e605d6ba31cd206f915f7f646de15d8579dc3e5442c2536. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZES92277362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f04ec7e8b2250e9a1c6b92cd73587b37b977fe3deaa667e276f31d0e58491f2. 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/QZNWZ2276386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012179769b8b92ca0157b0e6e9a31746f7de6dbbdd7090e2e619a8895131cb2e. 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/JPTF02129102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ca239ad34439e68e12402859a71aaa1ea3c35bafe771999aec020ed2e4f2c. 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/JPTF02116301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511a95e2cc1a4d73993c54510c23c87a5f76db3a5fb9cf155d0b41248603ecd9. 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/GBUM91800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa87871c27b3995b6155b5c61c04ed71fada8b885d2e32c0a3358b96d8b0047. 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/QZDA42249484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244fffd64ca19136632bb09df5fe1cb3edaa2db9877d194e2db21934560ef4fe. 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/UKPMR1800010.