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 0xa2a1e7f28840a6587c1f91404bf06bc9fdc3082dd672b6f5a18eab992e341ccd. 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/c5f09f25-ea57-496f-9a8c-b87d42e9a517.json and https://artists.proofprofile.net/proofs/artist/c5f09f25-ea57-496f-9a8c-b87d42e9a517.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 0x9f608f6c464ef33f9154cbef3a0a8e57d6c4bc407213d8218346e4d16e0e4cd2. 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/FRX762399554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1346ba671bf4f9c74484ca52f2ac6ac54766f089595d04e7a09a286ac2db8e2c. 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/FRX452175414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace543e8c59a5c32d870407a95bd6bfcee29bb8dd18a182efcd646c70fcc8a87. 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/TCAFP2195387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fda04fcc94249e5ba150bb512c3709bc1ecc8f940fe3043b7f88599a3c42d2. 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/FRS182078421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79402b2af56aaae8633ab1a7b16bce4d89000bc6eca8080db23242a2d3f1f204. 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/FRX872014032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5c3c0cedcf87c5cf47a7877d94e18cdb24f67255fc598dd7990d7686984d10. 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/FRX282004590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d9e40a889432f69ef1a2a14330d3ee5cb8a7c2013167fb947c6b914f573086. 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/TCAEJ1980806.
KAIZEN (Musique Originale du Documentaire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40da96e1e8a4fe1b6e063300fbb263f9562d23621fb35a10e1c314c7431157da. 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/QZTBC2443345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5fb6b6db65f271270ab8c5a54989938667b1d57f55f8568e00ea5c869b2dba. 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/QZTBC2443346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20718a684a3b3386732b5c37e71e70e50df19484c772be996d00aead065f3a49. 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/QZTBC2443347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf882c79907b17b5e26520e8e24fdf45d8c5c447e38212024f79b81c558643cc8. 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/QZTBC2443348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9a819e03626c51725f4d824c22f86c40370cd473f252f3a956233fdcaa900. 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/QZTBC2443349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46eb667e65b3b5e88899aae47e6282d9640ee55be60d6fada055a64c320aa2b. 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/QZTBC2443350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebe0d1218a79f71b553bb50a0cfd0bc2c9d540c1c966c3517a81d1419ce12be. 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/QZTBC2443351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a60a2e2026d8e0c7e1119b8c2c3f13a3922fda2f91f3eefa6267823b686fe09. 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/QZTBC2443352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9f0a8cb3122219a239ab1959461e01e93e655dad80d2142c4b5e3889177a70. 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/FRX872014030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3967ea35d4cbea0d27da95b321c428411c9d162618943d672f5e2e8e0975bd4. 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/FRX762059788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893a9a5d6b1e3027880a5f5411f054e76ab0709c1e6d05e781bc101549c440f. 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/FRX872014031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1650ecc1827dec43878389517379b708e09638143d1d75beac496e343324dd. 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/FRX282037549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52320bb010026c0a544d62eb3c15b8c022b55ba26e548c15e31ff3514f98199. 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/FRX872014033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bd5dff70c4839135f42a84a761568452994b0a52c002ea2cd16bd8b0d2f929. 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/FRX872014034.