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 0xd444e7679170557f6b1b274cd6c39f9f9d582d8f3ec5a0436e962ee4b586c8c6. 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/e75416d0-6265-4f0c-89c2-763f9c005b9d.json and https://artists.proofprofile.net/proofs/artist/e75416d0-6265-4f0c-89c2-763f9c005b9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hide from You (JUONNE Ribeira at Night Remix)
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 0x08064b3c3344b04e41458361e237159b0bb309387a9af6f5273d81dd6103362a. 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/NLYK92100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5f0a4590c775cac04adf77a752e0910cbe42bce80a4388c889a40d0f48fc4d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLYK92200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ba15c02b509af3c1fc6c41a7c770fb426a0289e8a838c0c550c4b4f51effb. 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/CA5KR2376726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17acb2b03a95391651716a125c9dd01213b5fc926e66e4201b3c6814b6e6026d. 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/NLT2H2300779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451f7a14451c5c19f1595e16c7765b0ae3f72fd8c721e4fddfd46cc3dbc14e17. 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/NLT2H2301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf68ef62692f13d49f751265912d6339de4581a40c0ba988c02b113017b67334. 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/NLT2H2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6f721a704206049e5dab912bd3708632879589eebc2bbd344c0b99ab9c03c8. 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/NLT2H2401138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c349e5fb65feeb1d89133eeca40e5304b44eb592d7b4006c3be890b73294eaf. 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/NLT2H2401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0171445f678560f04331949661bb692d1f4fd4bd7cbd76239419bb3bb53be7. 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/BE8LH2200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aed0fe3f397e8290f9a7f3a3927e76e8fbc7d008f8d4538782ae3481bdd036. 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/DEYT72300231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a28d568caa6a441c47a1d3906dfa3e4bfc0f89826b3fb0572ef83739bb5fa52. 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/NLT2H2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303754900500f3e1a755aab0046102f98bdfea7b826b21c7e3effc730a92c40b. 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/QZDA82418935.
Bar Lounge 2023 Vol. 1 Background Music (Music for Bars, Cocktail Bars or Coffee Bars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0171445f678560f04331949661bb692d1f4fd4bd7cbd76239419bb3bb53be7. 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/BE8LH2200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056a0570059f3a4d0e79f0523e58fa6f62c445b7c2152b378b268617ef1bb02d. 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/DEXW62400291.