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 0x9a8b1b51682a12ad8c6fd15a8ec2d646a1229343140410ab0224ca085604d387. 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/89c4a7e9-a2f7-4510-b8cb-3a289aa929a8.json and https://artists.proofprofile.net/proofs/artist/89c4a7e9-a2f7-4510-b8cb-3a289aa929a8.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 0x594f42237be6a85c979f56092ee9ce1df8c951b8b814410a1da4f964f529d28b. 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/FRX452217581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20edf71fd8cf3e5643306f285c022bf842612ebe75485f78a617e93cbfb4eb3. 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/FRX452217582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374fb6d40c3c6519dabbacd32ac089e3b0b22431bd7e8d86457b3805941a16eb. 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/FRX452217583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fe3eb2409f291b289714794c49ec125bb99494c806b9ea6912b428ccc50fbf. 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/FRX452217585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e6724829466bb8c31065df12d6df14e12d2d0b8b13c683361e09799e54b7b4. 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/FRX452217588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162c41d69b28d51904cf34c9a3b4e6022d6bf00450f06951c598b76e8fd1ff49. 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/FRX452217589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563dcd8f866914b675b0af8c34547426c9575374526e870c568d4afecaa26758. 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/FRX452217591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0076042251850a6524fc6175e0186bde933e7f9ff42ad6c99cd8194f004f7e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FRX452217584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3051bb560716a315703571619c0333410e4eda584be07515caba804636d4de5a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:36:32Z), 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/FRX452217587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45807457a3ff8ae5e883f467b417908502644bf01ab691b9e4967bca71e20e7. 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/TWCT51720689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baf75959ffb74d515d32b8bfbbfc6915a53663c495d3910b778ec7060d93233. 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/TWCT51720690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd706a9eca7b18ae55257dc95fbaf39f61a4863958e54c492ed79d191de8fe. 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/TWCT51720691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e48982bce26d4e5af8dded10df99d1f7d77e55a3bf3af795be158f722550cdb. 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/TWCT51720692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253bc6d2489f59706a6a4a93b936912f663ffa56a99fdd3fa3b11f6fe4519b1d. 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/TWCT51720693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22aa5e945c7aaacb1857c3a173633cfb342561219d1a9aaccd60efc96225e34. 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/TWCT51720694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1479b6fab31e7bb154b4d5f6c1e155b7dea4fa0b42b3aed03d0bba394fc14. 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/TWCT51720695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5132a8c56e4e396acda4f04055a2eb8cdb78e447c748f2077fa6c97397fb11. 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/TWCT51720699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e01401f6e9c5f7c2116b9e90d9332a1fc5b961f792f57c48c0d2c400dc28542. 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/TWCT51720697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56469c152dbaddf6b2b9902d185562610996ee960e688a16f4acfc9df24de05. 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/TWCT51720698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b28010b89cee5ff171a413a164eabbd58bc96f44604d9b8e978e973dd9cdc. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX282321388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5132a8c56e4e396acda4f04055a2eb8cdb78e447c748f2077fa6c97397fb11. 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/TWCT51720699.