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 0x1330886d2c09742e3ff4bb4d9b1797782d13675f7f593bc858dc630e2ca4bd26. 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/e8773164-7ea8-4861-ada6-b3ae1b121c21.json and https://artists.proofprofile.net/proofs/artist/e8773164-7ea8-4861-ada6-b3ae1b121c21.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 0x8970b17c69775605b63d06bff83030a5191a33ac0941e1d13799a72faaf57483. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES62029191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ddde1549d853ec98d2cc9255dd8e030013f0b89039fde4e5da59a2119b1ecd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:31:43Z), 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/UKR6V2012968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5be3c6fea5c98383719f98e6286f0d8960f184444735e51f643eb90ab241e7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:49:01Z), 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/UKR6V2117087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9aaf021c7888afd125ff3bcb4e5c6155b0c69efd8bc5d2ed0ea2c22ba7263a9. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:55:31Z), 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/UKR6V2212356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb570582dc9f11a419608be116c6b7b4f087e8ef874c8d2ed762b5410b1a2b9a3. 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/UKR6V2210197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a46ac1f064ac6e5c78d46661093a4479392e36ea055ab9ad24cd0d947bb6dd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AUKDT2300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c3652ae27e8017226991c04911c1f5fbcc2f168222cb101eec82b21e4da31a. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:46Z), 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/AUKDT2300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88548aaf439eb11257932270a3db6c10bef412ba8abffaa85fe1f86b3d91f727. 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/AUKDT2300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4ac5f016fbfbd90a8b64e856a4689282a7290911e1d99c67e76f2762a2d558. 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/AUKDT2300845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fdb7f7f40af2f8b427b228c6286b26ebbac4cdf59168b30f656049ca686b3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUKDT2401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9279b8859e913a07397a08f5416b77335f3b7f477e3d49559dfde3b7b671678. 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/AUKDT2401789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc341d29fb507399225e76bbd3d981816ad0be92f72dff901b97cd7f4f5157393. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUKDT2401790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eb133e3a3990595a5b627d891ac4bbabd9ba173e9e0b0af68777da28cda490. 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/AUKDT2401792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ee9590ffa72872041e15e3f78791269e7b5f3fcd5a2bd35a904b0e3a68a1ea. 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/GXBDT2444929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e34ac81a88378cf3fb4ed46600c3328e7f2d42578810db33b4e8503703f1627. 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/GXBDT2423752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7eee96a51225887c4c8c549e46b645afd62bccb6b0b66035020a732976bdd. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GXBDT2497232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c0e2a85f13bedc346f58be13feb06454ee889868f6fd1bf57c60047fd3a12. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXBDT2429731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dc1b90f32b2c8124615d1a2cf83eb95e23f163df79f8f7d88ece887b5f0dea. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXBDT2476131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289310a513ffe286b2a8296aed83557474470d7c1375144701a1ba5c7aad1e0d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:24Z), 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/GXBDT2471270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294bf39210c8d883d62227d43777b0e1a9b1ed1e2d583184459c9d6844ac5792. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AUKDT2401997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8cfbcb6e40530d35dcd6c3f8ed8f94f3e53ca43955828c3f6fd1349a32336. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUKDT2300843.