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 0x531b8ecdf8b043575cce79027efc1f93486490e017f7547da29bd19568e045d1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/850c2043-b2ad-4d1d-849f-2922fb2594a6.json and https://artists.proofprofile.net/proofs/artist/850c2043-b2ad-4d1d-849f-2922fb2594a6.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 0x49669a46bb7e88523294d94148c753a0c30df2ced392fbac32824d36d65b27be. 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/TCAIG2479260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d8eb18f26f8adfc112da6e1162e315128c7e263f66a4ecfd65e33ce08d24f. 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/FRP292318310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a685dd5d6b933fea10004ab016bef46278b666101b3a1acb875e642dad468. 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/FRPZ92321640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd37255a1c25fe1ef5c18a8f5e904e40bb7769465fb57e44c68c20800ee8b8de. 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/FRPZ92330550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe898e985df3d64d6b67ea170545f1c49fb757e2cd099f47c19ea45f90eb466c8. 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/FRPZ92329910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe898e985df3d64d6b67ea170545f1c49fb757e2cd099f47c19ea45f90eb466c8. 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/FRPZ92329910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd37255a1c25fe1ef5c18a8f5e904e40bb7769465fb57e44c68c20800ee8b8de. 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/FRPZ92330550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a685dd5d6b933fea10004ab016bef46278b666101b3a1acb875e642dad468. 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/FRPZ92321640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1394cc348aeb34adaa24b245a6f442bc88b43e48a492e41584f7ab46e24e69a4. 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/TCAGR2208121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0134001a85b70bd77627426578072468703d0aaeb1c7e6a959c0a76db4a18492. 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/FRIDO2211465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d6b316443436ff5a365a16c13d65af7cbd1241a4dc776e41bd6c7c29e8fa88. 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/FR5DN2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d647e90402537c4ce54fbf017e566d97833bd48bc4636761d55fa221b1991. 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/FR5DN2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4803bd631687c501543fa27aba59f932ea4fa0ebe0ca4f76c2d08456bcd97419. 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/FR5DN2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefbe83903dd6d007698c0a37be68b235ad3975affc405591645cbc02f357c4c. 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/FR5DN2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6545308a4a189009b4100a559cbb7b4162995cb3474aa29889ad77f7dbf1cd4e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR5DN2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d6b316443436ff5a365a16c13d65af7cbd1241a4dc776e41bd6c7c29e8fa88. 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/FR5DN2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf80190114bc30acd6819bfc155cf3a7194a1b23843ade64d1438d040b04019c. 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/FRIDO2112334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ce892c63a5a380dc0f8da0a7951a88713546386386681bf0fdf6aef241dc2. 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/FR2X42158870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b7cd03167feef3cf4a21a0a03dc8971cdd877cf6dddca2e5004a6e91c4a9a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FR99U1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e5edea59dd5998824a176cdaa33e2e4244276a3f302538ecba89363aca689e. 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/FR99U1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336583aabc6b394d5a489585654e1524d2dbc9c2bdd56b7a06c060b2c466c51c. 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/FR99U1900004.