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 0x108074af24ba4f28c51d12ce21ded9e1ff90fb0a72c4c2549caae4c28a232053. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97b193b4-6ce5-4244-a209-48896f687d27.json and https://artists.proofprofile.net/proofs/artist/97b193b4-6ce5-4244-a209-48896f687d27.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 0x4f13722c16c22c5402894175efe77a65614d9b3fdf7f1e41e632e8764aa0d561. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:46Z), 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/RUAGT2448829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e5dab412766452afda50d43e92cccf6f59f753bfe9250734cc87c6aa9ec8a1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUAGT2448830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b784b6db26f48f93c098e4d82ee736fc2e5d48fa0b0c7153dc7d7e25fc3334. 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/DGA0P2434902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7865c28cd67e73442a4635147592be8b890ba4b547e6966528fd7c87b1a01cce. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA0P2434903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d89365a73a8963dbaec584e06b403ed7970d21776161d15216eb39aee322643. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0R2417293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6081739ce8d68ecd1c20606aab21db700546f7a65ef9f0965b436e2a8ccc0a9f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:55Z), 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/DGA0R2417294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217616058e95a937c47e0ec8f1aa5cb7d3ddbb9de5472a542e5785117b65ef42. 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/DGA0R2465337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6378a3c36f55d113f62c515c21e32ab79e7c60cbca291118abfa2074946b878d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR59R2569832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a259584bb92ddd263f4a98ed8627cfd97d3ccdad87ff98234a2d609555c0b90. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:50:00Z), 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/FRX202507177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267d9ebada3e596986be05d0e69362779d945458628fef19d0fe55467df06037. 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/FRX282503412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dde21b72e9ae202262d3030147bb7529a728d165d5850e3f89d044d85aaa009. 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/FRX282503415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d84dda4577ae832c0ed41d1213f7fc67d5cc0339946541c92bb1b1ee9f8fa16. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:55Z), 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/FRX282505390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76301e9f27794b3aae9532a952819fc96a51f63baa60e217df6b988d6660c60. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:42Z), 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/FRX282505391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47d04102aad43d81050aae61edef4ed4c50b62f0cc53fbee937d30d7f5489f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX282503409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90279cfe714cea49fcd9d070f651a0280f12114eee73958c2f70bfa9f521173. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DE1ET2399510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad880d2d2199f79ed60bbc22ccc744f25689a6943813ebc1ee43f906ccbcc4b5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:20Z), 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/FRX452506567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1bd607efd2b1e1193dc0afe1d3c7afba2e46a250d274279165bd7fde1d449d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX452535569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738c54242ac1feb4e2952e015d342a03be962e1885360459d31b3103dbb1770a. 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/FRX872525265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6598f18daa88e006e7dd1f73f73eeebe5e84fbf2e2a0ba7db2f9f86af7cfa13. 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/DGA052514199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9b4a8495864f5ee42819ec2aa9c407bede9aa122ce3eee7a3248dab9341a9a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:53Z), 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/DGA052583289.