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 0xf2a221365a711b58280adf286b4aea1a24dc1e021752712162280f771e19d3b0. 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/01255511-9729-41cd-81df-49d7b047ff2f.json and https://artists.proofprofile.net/proofs/artist/01255511-9729-41cd-81df-49d7b047ff2f.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 0x44d9377095f2c9b648321fff6be7f2fdc6b0f9c7b457d687d6bdd8d496680826. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM4DW1896275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755d1c7b5b3a35641d2da2d348dea178afb06be1703be758dfcbf95c3b79f65c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFYZ2003243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7d3bdbb874963e4dec48adda017e9eb6b8deb574c1eec6fe3668b9da541e1e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2003246.
Is this tooth sharp enough to be called a fang?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c80fd0f27ad6532101adfa8add278de723db1961073265fb1b15a3b0f95db6. 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/QZHN72155351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36505e3baccf0ae08bc168fdd8d8ac5d2ab54ef91a8d5696fa0aa7b1d4c9c65. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6Q2198423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad77c1489906166e7b7080a0ae2597f04e3d1e093575909b7fd0b3128f68a19. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZK6M2136898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9330bdd3d1759ad25ae638d3f23151528461ea25549da3038945b4db9ee1a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:09Z), 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/QZNWQ2179627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af633f22d897868856c29e830292ce9c151f8512d87eee7522963031df13d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWX2130541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba15397fc440bd5bcbdd176b025e092581dd880fbbd2b4319ef44ada33a0db26. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZES62211851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdd7322ececa6442cad1a9ecc3ecc99cd9f20dfc5469e27daab0d2fd14b9f50. 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/QZHN32274926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9466df3aa591feb46fd1d750db4e0093d6f612f92c2b72052c41139f3049bf. 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/QZHNA2273207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d913d5a49f7d404196040da2d1f5b9302356f522fb73915ab262e4eb5438d1. 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/QZMEM2210561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd663b760035ca7487b49161ea374e341f66bb952763ee859a11cbd70433bf746. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAZ2277797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260116bfa4f12d9d18c7c2c4f6bc5cc67ba292c488a032d21222e8ae6b8ee3f7. 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/QZFYY2383324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bde8084c25613075c807c38ad2a5e8a1db7d29f5c38a58bf421e827a8c60cb4. 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/UKZGC2305361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b65943598019b43df25dd9c143f30bd4d81f046388c296906d8389cd55ca36. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UKZGC2305359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ce73ba1af21c6061983408504227f53350c956148af2d62b6d9430bc08525. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:39Z), 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/UKZGC2301687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca5c1d42dbad5f1d08a7e4d7f1aa1e429347acd5ca4ac6d00fdeef487492563. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKZGC2305362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd956cf03ac5635f6a90e0ad975c20911a5e4e31d051a0b39993eed70f24dc5a1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKZGC2309003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4da2cd921cee60859872145e023471a293c93e4096a8c3e9ea0ed31d3ac18. 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/UKZGC2405377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281618ec6f74f68562d2b0aecf927f08eeaf1d3d135dcd9487e444c638f3d955. 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/CAUG12300090.