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 0x43812623310a936cb84ac3fecaed32ece0a7826653b04b8f12af4a2e2ba2c8e9. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e1914cd-de18-414f-a838-e7c15b58be58.json and https://artists.proofprofile.net/proofs/artist/7e1914cd-de18-414f-a838-e7c15b58be58.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 0x09456bc099e6e9178e9953fb74390a98c45ebfb1ab1e82c7a937f16bebca79c0. 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/GBJAJ2000946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6f987451a370a74b9026c96872b2cb668c68d059cf6dcdf1215a161ccf77d9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBJAJ2000947.
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 0xe2b02b45693cbd350bf25d3d2b81ed29145d1258ea95851ba1a0d9b9158f36f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU1966112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a61e75cfd37735ea8a9b185fb716f473d17fab60bf3fe1f83b3d2c21190dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001020.
Troubles (Mixed) - Richard Earnshaw Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54273decfec5f0ede7a1f24c1f1d431c85e336c43db455d04294b0c50f69f323. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5ce4dc07f299bf8a1424e3cd0d0e3a067ddbdd7f11dfe79fd99a33bd971f8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJAJ2001022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd8c5d5b469fc01150f0731fc59e63c5129b141a39232bc12ebdf807658379f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd40a81cee2a526ab0bcc9e5f384e1cd121afdc59e87a8b9dfccd61f7a5f07c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2001047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e847cc75ca4d25a46c7a0e52a382a46d25182a962398a1b08d252fc34138e95. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJAJ2001024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fa7459b2be545ad49f1fddb4bd8a4baba104c2b32c25f9968d41616d29ba08. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBJAJ2001048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357b503f6bb779e2dabcc62fab1d2aae5734ca2a7dc92c4b6e6a785e8b0c6220. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001025.
That Body (Mixed) - Mattei & Omich Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff04054110c8b9c73e1fd640397f76c8a8024b0d20d3489458ac2a618342dc4c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJAJ2001026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1080c3004af47d681a9fd4b9ae6fd069161e946d5aeb3648dc668868cc07ee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJAJ2001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c08fa08a6a994da99f9471f35cda0964a0806446ca8f4b8912b6623166e7dc. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBJAJ2001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156dce7bb1bf93c1182d2e8222655b7f0a82b20b4209927d7b24030373090f91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJAJ2001051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96489c3dcf2f76095d53682fe180b05bbd52b259bcd16d25c2e64c1e00307fdd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a265c18548c79904b4fd38c4930f9970b8a0348237c676e0b30d94e51ecbc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e06698a7e1689e9dcc3c7628746ae380898dc6d49e6f29db07c6f26d73db22. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBJAJ2001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f05f2e208fdb9f0299cd15a4a818b7d033c9e35a1af16a8f390a5d2abe86ae2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea92a83f9dae4933714d71efb426826d00128c6342dcd5c2e9344362247bb754. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b20490af6801818789329ea41d40e384e6eeefdff236c035bc6de7629dccb1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d2078ed0396ef00647dbb828a4609813c78c9e706a792ad63639232e84784b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJAJ2001035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c677723d8b2d4af26929451b8a87f4fd735286a3fbc505c9c76dd84884081. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07fe38db8f50d0c202d75f942609818926b0e6a54ced8ec27e58be28757d0f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829774baed30ca59bb5f01ce66908e8dd83c7c74d74f17c37fb59bec9fe478f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBJAJ2001039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752267066b6701c3509e70d0837535a4ed7028b220450415056473129859663e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001040.
Celtic Girl (Mixed) - Andrew Meller Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0755bfea919701cad6296082a43e563eafe0878b9c7584df3a4f96ead1b9f3b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBJAJ2001042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd257b98b3f841453a7bfd7c102fd107dcb74a380e2991d2731958818ad998d73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX281947494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b12eaffc9768ce18ca4b03adde87715595069112238c7fe6901b999cd8d9b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBJAJ2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9383802d2ccbe3ecf294e25e1f32107ab2f29411943b671aa1933dc50c7b00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMNW1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064f37b71da9a9584409afc7e3f31f5d9f1d74113ac82f4aacb4e4b358af7bae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2002448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99951beaf9400dfa073620a65e235b23b651a04a0a57433f6f3c9101947f656. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2131114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd0dd7ea137dc2fdf73a1bda533ee8e4ea200d71e00896b81b2cc57eb98ce6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU1996315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb617154d85e08ef2e5f4ac2ee9a772bf408a8b00471d41194ba406a9aa96e68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU1996318.
Toolroom Radio EP530 - Presented by Mark Knight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4721be9d1e441765e86beee745d184039addd0343cde2a43f2d2710747f57184. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBJAJ2001280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd9aff0de3b6a92d67bbe5dd371ec42ddfdc985a6ee6a30eee8387672b6143. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBLV61921926.
VA Innocent Music December Sampler,, Vol. 9, Pt. 1
Sounds of Life: Tech House Collection, Vol. 71