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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a73ed53d2650e9caf5bfa932b7588e92f94ae6cf9830dc697be025f890c6319. 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/bdf3a902-50ba-4180-9dee-0e90cf32f2b4.json and https://artists.proofprofile.net/proofs/artist/bdf3a902-50ba-4180-9dee-0e90cf32f2b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Scattermaster / Jimmy Ward's / The Glencoe Diversion / Far from Home / Mo Chuachag Laghach Thu / Prince of Wales
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2c3e3270b0548ef762f21f7c1c8ea7d431c567fe6b275f4fb546621000a117. 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/GBA6V1300001.
Donald Meek's / Professor Donald Meek of Tiree / Red Socks / PM Willie Gray's Farewell to the Glasgow Police
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e708ae52df4d8d2b56b00c7c39b438f96e7b08d361165b5019ab12954341f58. 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/GBA6V1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39936efd7568dd11919528303b084fc733df07aec9cd98dcd398594f7af5bea. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBA6V1300003.
The 'Dirty Bee' Set / Jean's Reel / Andy Renwick's Ferret / The Dirty Bee / Road to Errogie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199d99db23b30e7e4a8b5efe0b33046f7584e5bcc4fb4f6485b915ec650ef40. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBA6V1300004.
Wait 'Till I Tell John Alec... / Seudan a' Chuain / Lord McConel of Lough Earne and Loch End / Smelling Fresh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb72656835bf0c4c4189b97f135a37d6c0dae6b92f2dbf9b032002dbe3bfa278. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBA6V1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20055b6d4a9cd150694961dd8c6a360ce0ab1804f68a561916f91f2703f7078b. 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/GBA6V1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ecd223963c7e48c973811830ae59050fa2b5ceeacd5d21132dbce915731c4e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GBA6V1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e17124a651a78783140e7b5072b1fcf81b6dcd4c9700e1a4714cf6b124c559. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBA6V1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971894da05cd6ea67ec2f087951bb66f9691e05b934b193184cb918d9959ca1. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/GBA6V1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777b15605a8142b905c4061d33702b63935b749d0c3959f7bcb7c7d3b218a2e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKQ5U1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d7c2bbc9d1902cead5e7556d8c7868929ff6b223c0d327c1327cdd6170f3ad. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/UKQ5U1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce22b4ae26ebc0dfcf614e02f47ed47fe1a134a69e61aecdef96a96d587e01b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKQ5U1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf357bcfd1d81897d4551599c359281282009d9293c36560d070b1454bdc5f33. 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/UKQ5U1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c11852a71b90306710b4b66b619a7a7acc62a4ca74a398cf116b0359387eb13. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/UKQ5U1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b2d35e4a8e9eb26321d943709202ad59234aa2e9386331d26a2d2f44f40bbd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/UKQ5U1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067067096ba71b8430ab1f0c467818a74714556bfdf2fe57a95773d794a9a746. 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/UKQ5U2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf506a238f58cc3ec33405422f37379b4db9a69b0cfa8271b68009189b2d061ea. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/UKQ5U2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f07bcece77a9bdd722746c93a367174a149db5a1d649435318deb907251fdf. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/UKQ5U2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c7ce4eddd3665426147a1d96adebe9fe9e124853a4630925a86ac32cbca81. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/UKQ5U2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ffd88a4ca50b211546a4bd5d9fdcdc8c742206953ef5f4cc01722f94937c23. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKQ5U2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0698f5f26401ca6b1b95faacf85fed80fcdb1616f4c981a56bded36f340e740c. 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/UKQ5U2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894ae920c16c880cc973ec63e87c5955b912cd5c1ffcc82f99c0cab8779aab24. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/UKQ5U2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f55f89d3db1cbb823824f38537305fa60854302849da0da78a86e68a54dc58. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/UKQ5U2000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7ee86cf4ef1162b8101d4c558f741c80f87388d092e4473dc94eca75ee3548. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKQ5U2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c97091c221e1c77ca8cf0d7bd0067b77eb0cc96d5832575d70acf6ef6f23c51. 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/UKQ5U2400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc547d3da065379c7eaf59e22b681563f56dcdf6fad2bfc38f8f30a65724956da. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKQ5U2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5254b74021d1968a239811016fe18b2c6624eace421d27b2dca9ae4610917287. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKQ5U2400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a03871a2c7014d7a5c28d9cc44bffcaccdc7f66c7d07721c9c7534befd4a620. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/UKQ5U2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3355aae227a56100d302a0c2af1abaa56efbe8173e98ee0dd88ada2c3ec1c743. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/UKQ5U2400310.