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 0x08fabd4f1faf9c1afc993423f5adf725524629cd0f06aa63379403f0b38778e7. 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/6b316a05-ecd7-4cbc-aa19-b3e3e2cbc171.json and https://artists.proofprofile.net/proofs/artist/6b316a05-ecd7-4cbc-aa19-b3e3e2cbc171.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 0x03efec8baea044306f29056d369e63b62db74d41c55cca5399e0a3dbe0873ce9. 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/FXQ892300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222ee2a5cff72e57d42c843628723ccae4c8407193367688a2a4e4ff9584b453. 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/FRP622300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91339ea79077786ed7e064bb1312cd02a7aa769c86ed15f4ddb98092b1ce8406. 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/FRP622400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175f7ecc7b4ef25e029829a6a7b581d093413081c507395503f20a1442927b36. 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/FRP622200000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65715c0924bc2ed7486071a71442a71b07536fe47ec998a8dd5674c27b536582. 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/FRP622200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400bd46175d100de264007ae181f929cba6ca823060e3acf701a4a55f710b74b. 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/FRP622200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dac14f4d35cb5663b29c6a4d483d5524bb1985c2913c1b42609988c38208b8. 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/FRP622200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe172f9b395f75b76ff6af3338098210f7b5c75e8d336734ef27ea18d01b4ec. 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/FRP622200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c689c3d01ad7fe8794db05e98991a9fb1fd64b0d7140a37dca66d996bfc4a0. 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/FRP622200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3fb268cd1b7dc29fe791dff11c9b4d45666bb6c32a123af075bd2858954d43. 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/FRP622200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91339ea79077786ed7e064bb1312cd02a7aa769c86ed15f4ddb98092b1ce8406. 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/FRP622400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222ee2a5cff72e57d42c843628723ccae4c8407193367688a2a4e4ff9584b453. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/FRP622300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e25a15888262916fadee1d6b9467481865dc81600d154d37ea8ab5c968cb90c. 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/FRP622300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c689c3d01ad7fe8794db05e98991a9fb1fd64b0d7140a37dca66d996bfc4a0. 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/FRP622200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540c8fa9c1065c298fa536d24d60b43835d529dbe39752414005bcae4cb8bfd. 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/FRP8I1913570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4355665de249088ca26c19b9649984e6f720fe8ec149383fb17ff207562d997. 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/FRP8I1913580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ce582743ed53abf8d9d1bd55290526b3c1516a3a4568dfe884e62699444c8f. 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/FRP8I1913590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064f095ac6e7043cd8c1ef00eca5ecfb79c4abcc0de68e6c2128b0ea6c479c46. 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/FR9W11515488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b711b08ab2b5043910f070da65cc2a4b1b0b88f95a15edbe53359300435891e. 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/FR9W11605737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f6a8fed65112c48e8c99b8949c084ff5acd7cace68117eb7d90ff18c94011. 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/FRP8I1705720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d26f2d6902caa82e4d202878da2fde1ddc8c299e879ebbbbcba5e082eb7deb3. 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/FRP8I1701570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8570760ca1f013133582e12e798ffb26bd6b1992180b758c9ec4e475a9c3ef50. 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/FR9W11517654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0825df4158d648bb36eaf3250cf5ee3f38401b65145a332b4959d87558b06ae5. 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/QMWZB1510787.