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 0x2020e4774ee319e494107244c3feb90d740917eb591e0e0bf96c6f71923c6caf. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdbd568e-f34c-4192-b3f3-e53dbb4963c9.json and https://artists.proofprofile.net/proofs/artist/cdbd568e-f34c-4192-b3f3-e53dbb4963c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live in Copenhagen Jazzhouse (feat. Central Earth) [Live]
Long Shadows (feat. Thomas Clausen & Jesper Lundgaard)
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 0xc2334d9562839f5e888de580640aee03757dbe550739b253a12bc6be8e043e2d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DKH7B1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee017b56573b2f2aba79a5bc5d2e4d6e6d2e63ca4d5e22066f93f6d79fdbd42. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DKH7B1500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46a0b8de529c9b5bbb5523d1d0e7264a2bb0a359f3dff0f60a277f171c114cf. 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/DKH7B1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b99b97ff952b1cd2c4e854a2fca4b4061401ab74730b6ec9564cad002e0477. 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/DKH7B1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c6eddd08ab98b12a6c2f6448179a07bdf81012899583e205a30a9f3167cbf. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DKH7B1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aef889c5e572dcd612d33076643a5593d9bd32c19a4e44358d137c151ef3d0. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DKH7B1800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50384b00ac70d2132a3393dc108d1e2cf2bb97dac8e2f081cddcc42f402575ee. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKH7B1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead7a5cad766717d44a76a16934113c941aee5fbfc3befee628046cef842c9f4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DKH7B1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa91e6de07e6c25d1258a6254951e6794a54e492f331522caae2b8403be21b1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKH7B1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62fe8f8e213141d6b303551c55668c9d4e59d20c063fa8f1609de68474688e4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DKH7B2000103.