Git () is a distributed version control software system that is capable of managing versions of source code or data. It is often used to control source code by programmers who are developing software
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 0xd2a8af9a635c87810ef44d9e860b2b9dd7a23ca87bd24ade00e88754a348b7d4. 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/5ed6fd05-1ba8-4429-96ee-7f0e2b9645f0.json and https://artists.proofprofile.net/proofs/artist/5ed6fd05-1ba8-4429-96ee-7f0e2b9645f0.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 0x0226968f033035d3538f861ffcbe554c54f756cd13fb22351bb2742a1a835647. 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/ARF098400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efce1424bcb7fda80fc01dfb3dacf1c8868670087a97c30671b10ec646d74a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARF098400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2aa69ddd8ab4b99454346965f7b0080585117c26aa639f3e5b676ccbbd8702. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/ARF098400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e535a2e960706f5c7b4dd23f17f7f358ae8ac710f44ac43b39420213236be4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBSMU7238223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181cda21be6d29f081eea055d0a09fa72dd709abc5e0b3f5b18a0e2b9916b64f. 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/GBSMU7238230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010556a2313086ba22e8829456966627d43d309c155ce49ac89478c50ba05e58. 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/GBSMU7238232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428004da936ea0594431bcd9a8acab52ab9430d1e3d9d9f3e17e367d073bc5b. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/GBSMU7238250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c8e223b942a14daf7246fe91bf728a8b44ace9f00a19301ea36172b731705a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:14:12Z), 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/GBSMU7238056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b970711e8bf103d477c85813e6bd4088224e08a1409d4017d422bce16fa23b2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU7238060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a9870dc1e7c846fbe2b8c39ff5e1b86fd86b93d279403ef0f6281f1403ff8. 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/GBSMU7238061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfd969fd209c10444ca8782e8df57a85337f401088affc5eecaec26e854913. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ARF038800123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4068c3edc0e30627023609d68087acb12e7b9d6d5e0a19a18936efe48a6e5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARF038800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9f27791b40cd45b46e1d2a756e837039d51510f0ef630a009811aa7e4782db. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARF038800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8620087cbfccbd78ddca90d6f3261d3bab538f21891534e77050138f7bde083b. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ARF038800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c98a692e050eed91a4c1c69a66c40e8893831105ea8977a2dceb38ca866fc69. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:33Z), 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/ARF038800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919fb644284c9993b0f7d3cb3986181eef5a818da9196aceae1a4d0daafbc6d5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ARF038800129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160df18cf217d5555816dc965d867ca13dc763854ae30d78e1169783e0bbd831. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ARF049700276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225ace193f4633b9d7ed26ee83b2c869b8352ff141b07d7cb1c2c98b4e74fd57. 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/ARF049700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af3046554f6364ae940cdb8e05d63957efa6fa1f281d0d74bb4d1ee0769851b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ARF049700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13908dd537d5da8bb2a94403c1748b267d8bf6d318ae858f8ec4b15ccac89ac. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:06:31Z), 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/ARF098400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e090203ebd40761fbbb790698718b1af6d41b5119fd76b201e379d090ec55d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ARF098500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa837499d62c79b4e977ff54160572bbd004fc92f3aac52e4706a875ca3212c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ARF098500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e4807c994ea33545efd8398ea9d5d217e84e81580c694a006d7fa5582229b6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/ARF098500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f54ac8d106ad7bc9702f9a0f48004a55483fe42034c8955e3b83c3220c6501. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:59Z), 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/ARF098600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2aa69ddd8ab4b99454346965f7b0080585117c26aa639f3e5b676ccbbd8702. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ARF098400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d1a1dc7188e4455b387f162b0408b38c6c7456650f05d0511d0b87a7cf075. 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/ARF098600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0e87a5ff3b5c2000dfe3afedc9b343d3dd9ab07bada4dcf15792507ce3f288. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ARF098400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fba416228ca33a9010cc78745c2fb6ba39a2ab2e6dfe96a051b96c50b549802. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:31Z), 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/ARF098400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a31e9ab097d7bf813bd7f9936b783bc9eb1f3c7c14241ea61bbfcadc8311145. 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/GBSMU7238306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82f57d9fcf924206f00ac29863a22ffc93a8da2b71b1aeb4bbcef794666934e. 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/GBSMU7238307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f9be30fc0aed275bc3d54f8a1afe04c60130b075e55d06dedaeac3da1a7c33. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GBSMU7238309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cae474a002e50f8bff746ede261dd9bf048cb3dcf76d56106d9e29712f8104. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:12Z), 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/GBSMU7238311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eafe46075e1f85f29706a144dd1a730b900530c976109dfcda8967b8ad7661. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBSMU7238316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4c19d65d5c0f0b9689f63aa25301f84c3ce313435682eac313470045683d6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBSMU7238369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165c023d75ccd69aa176230c355df50a3edc539f27fd6005e0a1a3daf9a80d0. 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/ARF098600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6165c023d75ccd69aa176230c355df50a3edc539f27fd6005e0a1a3daf9a80d0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF098600013.