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 0xf863c9d8e6721974c0280dba3b16e09fa29472eb7fb3c630803def634ec653f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cf27bfa-d419-4233-8f59-f620faa403f6.json and https://artists.proofprofile.net/proofs/artist/7cf27bfa-d419-4233-8f59-f620faa403f6.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 0x3219d0af6efb0c96bd44767d0d4468e1b94913592dcd98ee450eb0d1cc0aa595. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/HRA041888543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f49fd815224bb3ace3363f7e940e796e5f35686d7e80a2151364176a1befc77. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:51Z), 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/HRA041888546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813136c6a5e1f640e8204c89b98e3880d4334b4d679a8c8c0236341d6892bc37. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:30Z), 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/HRA041888548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cc262d54e7e721a2706500d787aa0874aef46acc5a49966dc694d73e27fe52. 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/HRA041888549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7324b7badc38fbb07d746970b4281b75345dbf6fd1637c6bc448b1119736e8a5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:21:37Z), 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/HRA041888550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee76a816381de30e04591c651cb9c16b272c0ae826089380317d29774cf88445. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/HRA041888551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172541bf3f10c65c2d99087919cf27f8f6008bb849f62f80ee7265e935f7f5af. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/HRA041888552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b041f6095a8c7236492672e0039c936b1732c3a9cf5f3cfbe6e684049a90d5. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/HRA042300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9cf7cf1694f28a556f35ec48a95e583ac1b2fd8a1c9d804b9707dd33891c20. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/HRA042300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79593fd5e6e7910efffd60ed56b47226696a557b3a206b14adaf330b84059b4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA042300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651c12c92de84c0ad679e3fe5aa6891a402387837a0465c9beb820c3ffb28ce1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HRA042200897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd152f17f9226fe020bbc1a612d9e6ad919fd44ba8d2ec13f14142a50266f13. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/HRA042300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb901515e3a5108932d53ce5466495e7225fed895786c200125ff2e699edc9862. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA042202651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3e65c2ae353ea7edb378b142b908c33acc4cc798ab46b74a08c8a2dd94d40e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RSA222309025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a302861b1d7c0c53c17de97277ca3c05cface2a29f45c0a309dbc6757f8aa. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/HRA042400371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9240f307e12e986f845d912b773d40f9ac3168a415d35fdd4cc3609f9d8a66c5. 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/HRA042400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925bcba3a4b85420a6be638fa766701911ff859dc8ff68d2ccd541ea98c7bb28. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/HRA042400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e227b6953b015d9beeabdd284ac07d834e512821be2047affabcb14658b8212. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:47:56Z), 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/HRA042400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326b0acf88f90d40faf85829eae43ab8597e0e7221f5c7ce236d7a9c0e2ba50. 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/HRA042400382.