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 0x800c4d8569efe4deeab209c64053d5412f6f2dc0ea74bbc156349fa390602545. 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/8ba8830a-0186-4a70-b4f6-5c5ec29ef0bb.json and https://artists.proofprofile.net/proofs/artist/8ba8830a-0186-4a70-b4f6-5c5ec29ef0bb.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 0x543d8b8ec6bc09b8c63010128d9d4112907730a95ed0759bc80c9f2aab05c07d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR2X41827736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1985db0f5a956dc0eede3c5b7b241a26cd5ca3dbf7eae2dfb74d0a5fe8dda7fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11904847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484e9bf3e922b0a90a127481f34f2656a68590e7ee14c30ac14f7594a56fa4b7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRMIM2220229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7fea08fbb0b4bbb9a41ca6b579a3ac58f8ba8d4d252f733d9752a3e289c9e9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/KRMIM2236307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0acca0adf6287da358a531d3ff48d8111120651ae7ab3f116605d964188660c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W12358219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fd574bfada3c1ca46dbb3729d1987ad74b35d02e58ad0e659997a9026cac11. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W12404950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e66cb9cceac28d7ebe6c935c3d0178dd0608f38ad9bdb2023d9272da51110f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FRX202465048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d54d50f4b9954b35044f2dd91762ed0ba23ebd764375505655e584de35de59. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX282402123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e66cb9cceac28d7ebe6c935c3d0178dd0608f38ad9bdb2023d9272da51110f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX202465048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0acca0adf6287da358a531d3ff48d8111120651ae7ab3f116605d964188660c. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR9W12358219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a40cbae1dc8c67480999f58aba24cf16b5ded64fd4e90210625cbab128ee5a8. 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/DGA0S2404997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e33e069d1baab504f0afbda76ec7474a101fc2224b7eb14e66647125c3014. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:55Z), 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/DGA0S2405005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf340c54c9cb67dc6909390336fe4951c5eaea7e85ae675dea8eb82cf6fc32b1d. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:45Z), 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/FR10S2541362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850a9a86a30ae929c55e9baf9e71345f72bcf2fe0e45bb8d6438966e4c82aa3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:56:05Z), 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/FR10S2541363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8574f3c46f9ce8c7c258aacb661a1b607d9a08d9bad41f18cc3b1373d0745918. 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/FR7X62400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc70f7913910458f0b08bdd5ae877a3cf6dea6d61f17c65544b202300d4d8c9. 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/FRIDO2111481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db180d1c7914882239165e30a9c530440a61756dc9c8785e0c3b65fd25b43aa. 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/KRMIM2207696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f670790666e2388e0990d71cdd59f4568d9f13002bc3243867c051b4656c2d3. 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/DGA0M2301415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8305bc970efab110a1f96248441fe34226153427207680ca6d0134d014aab392. 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/FR9EI2200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d36dff7959e31b5d9da8c2af1b9a6257ad6e3af400a253534d374fced9058b. 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/FR9EI2100140.