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 0x6af524abe488d93b13e50ae86b2598f37e77d10a9732e3397e7f02f41464d638. 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/6a68222e-47ea-4985-b75d-771703a83d10.json and https://artists.proofprofile.net/proofs/artist/6a68222e-47ea-4985-b75d-771703a83d10.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 0x7a70c22d08fab7cdd872451f2a25cd2307844bd9e306873b55a08f85d976b436. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES52303914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb941bdaaf4e6e9c29be2297a1be39d408c1437b6c8599294a62ea92d8bd748. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZES52303915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd57fdf5ec546cbdc65b93d4ce444f6fbc637fa84388c6136fd6f406e089fc. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:21Z), 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/QZES52303916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ef1b34adc944858cf2f107ad98a9cc046b59c69536a56407cace35e6ead5fd. 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/QZHN42349529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad5b6461c9606b6ac5736d7cc686f761203f21dab58d6c439c45ebc72c301e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:44Z), 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/QZWFP2318687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968443c9836d3bc1a93948b2677bde1093c341df3c52242359680752e282895a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZWFP2318688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1b8619511b25199168736a02109aa7db26a4b8ab82709d7f83b131e8d38517. 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/QZWFP2318689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2012c7252b296ef0bf994b4644cf218a067b6ec2f189c48bb9e66cca5f5ee58. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFP2318690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda030a23293f2e1503cdb70e9afa9eaae72c3bac496f9b1981fb1b3c6a6a97d. 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/QZWFP2318692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364a7528e06ad9e63ae1837d6eae1979146ee1ed90b05049f7258058b55a0a2. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZNWW2401666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd198fc6264d6123f841aa5080ca80944592a75664581dc4389414b577e44d1f2. 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/QZWFK2484693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940819c8ccd8f1c35143a59acd3310c0d9411646f414b5ea56164d8a4ba25dac. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:14Z), 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/QZWFK2484695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f758b4e37e514c1cd205d6ea6180299d228409261858e38c395d0e175a672d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWFK2484696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd134b01384a4fd6007f6da39776a688bfbf8b3592b4625bd9a0405fdc2d68c42. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZZ792404220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1390fcd30730581bfb634b96a2811836ffd127bd26e7eee7457b9de6b162b72e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F42585073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a6c191bdcc5e16f1d64cd11fb8567f712de7a2b2fadf96c70ae86823bcfc5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QT3F42585075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaf9c454c350286a92076cf563ac0a18622af685738cb3ac64a39eb859c8a08. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT3F42585076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5dabf7d09b638fa5b697e8198c61d4a193e83b48584ef917632c0b7417520c. 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/QT3F42585077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cb807cbfbab8802e4c1abae2547c8e9f85d43972578be54e653c45839d6f2b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3F42585078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad273c9073acb06a317e3c064d188fdae9bdbc55666b5a3c1ba035411f1b8cf8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:37:43Z), 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/QT3F42585079.