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 0x24778fac3d26e0ac6735975b881d1894260aff142db5f0ee0b39e782cda0b59a. 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/93ed8cb7-f084-430f-9c91-844df879359a.json and https://artists.proofprofile.net/proofs/artist/93ed8cb7-f084-430f-9c91-844df879359a.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 0xaedfc6025cd930914e3dee6186c53ac41a7274ea33b218b3b71533b12126cbce. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2391902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e1f9b76e31919028fbcfeb96f8ba44a55bfff789897b30b3e700c971ce500. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLFP2391903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c525ab7c3c97ca8f7669f275246f25844f19ff21d948af8906e56cd2bcf87c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBLFP2391904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2cff1b7619dca4d626c632f94eb7ff1756cb0e0e1cd114adc0c7871a193749. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBLFP2391905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd228def29029f861e3cd82b93c5dd623e196186bc2c6a30a06ed5c26bcbff4bf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBLFP2391906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d93e9f36f9d31fd501d3160774c33897cd7e873b7b386b2f652635612a4e4df. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:30:14Z), 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/UKXN22325995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2526e54a7f62a2ea4f9864424734e2d1b4c2131387ea336ca6f5e350231da0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:49Z), 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/UKXN22325996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7b32bf5b4d8943aa6399556c9f2072254bd10710dad43d4d434197c217ea78. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/UKXN22325997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85cafad5b9549c5d407936ad76afc66eee2681088b84de93343229063d80a01. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKXN22325998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0277498129a08ed2810e102b9a383639217bdb3595ebdadc6743bb60b912159. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKXN22325999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a93ab956317db99653a88afb99443d833de49b06ba325fac73a81b1eae3af93. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22326000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8595e329a29f5b4ffd51b8f8db9cf328edf921189076df15ad6c48a5bbe5a35. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:36Z), 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/UKXN22326001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7f2d86aa46f23ed8aaf24f011901855bd926b9ae717f5bf7362ef284b9c252. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22326002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179218b5d11c2ac1ba75db715b154d0e0f0d13070c873e6cd3959455d87d6939. 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/UKXN22326003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777f13866a856ff27b6913292f64f268a53fbe4c51cb4e7f9e459cd923fb86c7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:19Z), 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/QZHNB2424573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae5207c1f4a44924605666b5640cf0f117de4baf09b305c763977b4ab60b5a3. 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/QZHNB2424574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe173db8a7fa23735d8dcc187721e8271e5120c2bfbc2730024abddbc642848ef. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHNB2424577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69404927bb93ebf1583e02c68d2ff39ab36f4c3528fd058517a5e3298095bc1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:50Z), 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/QZWFU2416085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53bb7a238fbca8b38d4f722cc0f7d45479c1e9b7e5cf1b2467ee7eae418fb1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFU2416086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce25fefd9c382325d623a78e30bfcb88af19f078ec0901dbbd6c40f64d8379b9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFU2416087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aab2e05680ba331471c84676fcd882ef7eaf16ef44e8b2988b0b51c57b637e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFU2416088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bc5b23aa5e553e2be09ce9f0cc4741def26081f82fff22e005a1d6d8d455c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFU2416089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba3d1f0f11668e17318c16a6f2e520fba2bbe9c5e30012d552e9a43efa18b3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFU2416090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad66f90b1cfd402e57004f2f6c6d40230a961b55dc732cac025c4b52b521aa3b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZWFU2416091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35db6f5170957931dfef0e1150d8d1b79faffac7c183275f4ed7113cc6850ebe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFU2416092.