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 0xc307f639b522e073eee9d0eadf57e442fc8b216f59c0df76ecf5690ea2431dfd. 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/03a7d34d-f8ee-424b-9a7f-f0479749f8ac.json and https://artists.proofprofile.net/proofs/artist/03a7d34d-f8ee-424b-9a7f-f0479749f8ac.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 0x5a80cb5a0b7cf0c7b031b93164d427b07d846358d34cf2a9f5ffb8a6f5d7f197. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCABT1494196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e0a1bfcf091af5d4e90bac3414957678588ceae02f3240a2e4a9d7a2b86c7f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:12Z), 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/TCABT1494197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2da5f117e03eedf8999bcc394853e0b0db171a2b0b79c6ce58e706e8911cd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABT1494202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c8d27007d667d00992dfc38f9756ea80b2b677bbeef3b58d3e2815f646f2a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACE1594335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465919c26e5007d7a1180f682ac50817f70cb7d310eeb69a2990ddaf2e00747e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACU1635079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8782811e114e72471931064818c54df64cd9e55fb6075dd066db46ae3ca7646e. 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/TCADH1703255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb76c077deb2838f754b16e914d5ccb535f90968651fd6cc8f8b95e5915ca29d. 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/TCADH1703256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f555479b134232be3b5fdf127f9547589ec7fe91fdf2af65aeada10c9b9d1e. 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/TCADH1703257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcd478ea8f9b7f52c257b5c10642e26d06be5f067f9165c18591524667a112e. 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/TCADH1703266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5790372e8baa9287a127c8001047ed291282d47a922487705360476e5800f8. 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/TCADA1723509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49eeafed125ac1b33aa4b59b3420b278c52a19093bb14ea4fb9822a904a5b96. 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/TCADH1703275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f124e23f0c8362c8a65b376547e22e920071651ea261a1539243eed00e6d4ff. 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/TCACW1750573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf5954624f3a4a860381ad9a1dabefa5034dccff26ad476e8ba577df7fcb948. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADH1703284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8de9b0a3c7573eb10345fb14a83076b18eb4cfaadda57e2227da5fa50383366. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/TCADH1703286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ebabc22352d49edb19163401bcd65eb30cc181df598b30ace05118c2cce719. 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/TCADH1703289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465919c26e5007d7a1180f682ac50817f70cb7d310eeb69a2990ddaf2e00747e. 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/TCACU1635079.
Bonus: Struttar Som En Struts (feat. Mats Dawg, Cezinando & Macho Mayne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ad4e5de9582d904d1e23bb4a3e1356640e047e041858ade3ca7652525d14c3. 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/TCADH1703308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c0496f8e44f521fb303045c7e9927ad420bc7a02c89ba4a1904a248ad728e. 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/NOXPR1900026.
Kem Kan Eg Ringe (feat. Store P & Lars Vaular)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03132b36c656bce0dff892f9f39c9efe858383e32c684ee24308dfa6f0e9add. 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/SEBGA1902227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bb97180987a9103a2ac6e3fde885c676e419aebe22b1f95b070b424d66e311. 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/QZTAW2303472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce2df57398e2d486b9fe1abb4dc2bcbef447cbafac390dc7070a44c9507f12c. 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/QM2PV1531699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c7e7acf29b0c70dd81ce78f0f8aed44d564fbd582cbbf2f45c9e129331042. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMPKX1508053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab28da849884965edb2164c8e4628fdaac7b737a34dc597b6ebbd4f8be9c887. 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/NOWAT1304050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4ad8663d1e9898cd7b988b5241b336ef714bf1d5ed55b8fb4b187074e99cd2. 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/NOWAT1304130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e08d88bab41d09fddd7f44b5f7083fb950904163811dbd3fb3e1c1773c93e. 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/QZANL1767433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6c7e7acf29b0c70dd81ce78f0f8aed44d564fbd582cbbf2f45c9e129331042. 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/QMPKX1508053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680d23f366611ced780281af2c7778ba714c598f17242ab57e58b7ce34d35d1c. 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/NO2FI1104070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3874ccc538f52e5b3ea07f63fd857c313e3e1d9a1701b742ab0994738dc947. 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/NO4OY1708070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c5424491dbb47defc5c4c12e9e7df6d7d1dd119bcee3c22b235baa1e1eea36. 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/NOA871901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444fe7edde014f8e95b5e2f990a4f9045419962ef9061faf5e7a3cbbc13ba336. 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/NOCVS1717010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4a8727fcd9c944d3fd023bc4a931f7292c7e1573e711048490356ef3e12e0a. 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/NOACC1503090.