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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3134c05b441c7dcd76765500ac374812aab69ba53def6be26c48733b656995d0. 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/250ee3fd-eb2e-422b-adb3-916080237519.json and https://artists.proofprofile.net/proofs/artist/250ee3fd-eb2e-422b-adb3-916080237519.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b4ea52d7c22580a3185926d477b9878d4347b7df92cbe5a1edc5898bff0a0f. 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/FR5R02314626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74419ff74645b7df841a19020eb6a9b611852e5088d1191a7f88af6d00f054. 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/FR5R02314628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5318fac97e4739486ea4a65a73ffc320c2239a45ae1998caac2b844dd1d77376. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR5R02314629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43feb4f836a8183452cfc5e5bda13a9132ec1984b209030b965a1cd8887d62cd. 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/FR5R02314630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c4627b1077c1ae7248d4382204375b84e1a5e25a1c7ee91919aa893a1a7ba3. 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/FR5R02314631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce13bbdd26bc3a65669c2ef3e2fe02455928f5cb75c305de7d0af3892888f28. 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/CHA012100481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55f6d55588a76692e407afc5c1b554713b2df0b19274bdf7727f4b4cbc6eda. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHA011700277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c1ae29918164cabfd97fc8c60e2a479355de496d387206e13c7f7638d30bc4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CHA011700350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fe741f4707ea14185ea12e206815574a2224b3a4266f1d985c82748c38b37c. 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/CHA011700353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e8681218f690c249a2289b0fe24fe571bdff28cade955499658710ce8a02ec. 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/CHA011700349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f0ef0505b47b080eec77fae3da3674ecaa14f65bbe6cc57474b1da8f266c6. 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/CHA011700351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5e09c02c5ce98af2956cf6da83fb602e12d40b4dd31622f424f9bf1e686ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CHA011700348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a7abf1e64c467168fc73291408d7f774e3893f1d9a38e013af6bf3786ec68. 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/CHA011700352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7657424a3fb73b2b75e6ccf7b294285f182e749ce907861b37a00f58bf2ba105. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011700355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dc3a7a7574b742ed8c3b9b4bec0cb0e07bfa38d258514a410226077486eceb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CHA011400323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ea81b2b19c81419ea3f594dbe6b755c55ed34f3c9e7a50e12c9f025f04074e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHA011400322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89707929ef1c9bbe01dec3c150b2b430a2d0bf61bae6591e202ce26a1924df4b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efdd7f1c9956769f305f61f5d7b99b69fbdc3d390715e6269e5d2e952176f39. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c200bd9b9a23441f270769fb67310f101502aeff62e5ed1fe93913aef56719. 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/CHA011400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4201225ec7435847c9ab67b5ed7bb5ab2be15c8a3fcfdba481f8f834905f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3daf67e4c546634df187448670422ead9101c330bdb23c2acb7420582c3f3ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff866d7d6236ed818860f2999f6aa8da6e98ddc71ee5657aec983d394d7dfde. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH3461103912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02af00fc84a490322dd95e3420be6bebdea63ea3be77fa92ca441a5cbb29487. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH3461103918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35641a1ed7cb310b1ce09a2b41b6c19b6f1259e4b958eb361a005c5472f2fda4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH3461103920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a00fc9a0bec553ec669964f498c1a39021fced08493a5c18156d627a1f130. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH3461103921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b4c854f1ddfef0c0ce61cdba07dc49cd11071ad0f9d6b4ee9b052cb5f1bbdc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH3461103922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bf3531a9dbec5972448054296d872331591ab415beabcedd9c14a91a71865e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH3461103914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bca5eab47ce0bfb8c7d12cd9fb3e362c5e80f72dd20c70b5b975854f4aa7eb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH3460800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387907d99bda46a3b69668c7a566f8b6c4096c12ff60956bcb431a39f678f9c5. 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/CH3460800174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3201a8f040e228f0a5dc15fc5638b119fb0909d3322802ee12eb9e0d0cda6ebf. 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/CH3460800175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919e62f8be79fa81e749287f7e52448280c859a75f8742b5cc7db624ee14b36. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH3460800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccac6c7e9b67f8943b097315c07e943d2145f2d0fa875df8520860752c0c035. 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/CH3460800179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce13bbdd26bc3a65669c2ef3e2fe02455928f5cb75c305de7d0af3892888f28. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CHA012100481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5e09c02c5ce98af2956cf6da83fb602e12d40b4dd31622f424f9bf1e686ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CHA011700348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269d07cb1f3e2a4f7fb76392fe0610fee13bc53af26084a563255b25010dc4d4. 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/CHA011700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a655c5e54bf49ce149c730ed591105c76951925e9360213a48b0a82272fa264. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6540806736.