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 0x860fc294994f024dff1e563e71ef443047106469fd6a6ac70eb3767d4e230b90. 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/8ae6922f-55d3-4172-aba8-5e0c65edaac7.json and https://artists.proofprofile.net/proofs/artist/8ae6922f-55d3-4172-aba8-5e0c65edaac7.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 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 0x43b91fe73fc89715f5e1434d5d7dd310e72a811513e34f72af8674bbae441fb9. 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/USETB0810457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3585e5b1c4a32d58f87453cbcd67480d5127233e7ca9d5607a7dc6aab40b3a. 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/USETB0810489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe056e34e88dac576e8d4f723477c134056f3a91a2c40669085617bce5c866c5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USETB0810482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c9a9d4db27f6ab17e2cf37bb0f9346e985c813e54533d4e60ded8650b2651. 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/USB4U0500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc923dd69a9216aee836b2147e25090f4c68460a975e15703179c2bf6a5f21d. 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/USB4U0500653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4de110ab7e5125909a11d2075637b14f04aa69d6f74f0f75e8b0a4689e84ac. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USB4U0500289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68878969b1365dd454f3931c9dd98fdf795fd95dbaf830f6438da9eea7e0da37. 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/USB4U0500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34508b1bdb415fb2c1d061c7716a590e2a30d778fd83fab642b69b2852e0336a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US3U80800838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c51c304d12f17d6bf85f08a09d73e8fb9f277e41d545e26d7225e39ba5da8f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/US3U80800848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7596a5ac01da2434f511f48edab048c3576cdc9ff40f8fc2f397d14299faa285. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/US3U81100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d4bad7432a17a078b7724b6ecb55913f1def94cf0a3e2865a01ecb37d88e1e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US3U81300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb89c17e1545da754d2bb3613da30fa6e32746802e76ff6d389f0409f3b343. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US3U81300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d218e56d1dbaa9c1ef603f88965683c260bcfe8ec3f2026db1f4fded3bb4a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/US3U81300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2a175887ed018fb30ac90a0aedb21a1fd58a69dbfb6b5097f43bc50382bb81. 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/US3U81500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef743eb4474df1de44336b157e9629f0c9a1c424c59840a5b7c8369c9b5a063. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3U81500050.
Live at Daywind Studios: Karen Peck & New River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211822b991a51a12eba32b1baba1bccda95477897c8b73e163a5076ee2baa586. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US3U81700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc518a5a50c3ae4e9bc6e6d9c3fac5e3f1713aeb314f3271d23123cad42088c30. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3U81700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a554ee3561003e4242b70255e78633b229954db4a03632ce503548ab5d08c5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/US3U81700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2fd169710a1e910ddc8a6d06526d6f2c686272523eecdd0003861a5c424ecf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US3U81700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f649b3ae44e363e4e5e0f483945f4d6458d2f70ffff28ecc3e4f50416c574f. 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/US3U81700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8312e5deff17b664329dd74d8c2af9594ff5fb8c7c1af858c1f3d1aee836ea11. 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/US3U81700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22d42726b9b186d690b73b3abdf7b51df3bae9c34800826dfc14efa4f3463a8. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/US3U81900348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7f29010008eadbbaa65184819d130a71db0c409866b25ed47455782281676c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3U81900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf9432b15942d4d18911e4b5dc04415bcace780094826592dc5a41947b3e2bc. 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/US3U81900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90805faba0f5583e8e9605a9de28abf88a4b37b12722bc4cb671edbb89a97123. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/US3U81900353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5363cf86e62546292c4e36ce7dfdb4c327cc9318d453a31426323f1c78ed6b8e. 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/US3U81900355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd4804929f72420d9616e77425ee1ea67832f45e81622cb00adee6fe5315ca8. 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/US3U82200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49607b4b362810508e0c7a1b19aff5b7ec039e9fe3f0f32b5b67cba59ccf13e6. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/US3U82200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599d60d284ab712c1e31d5075da89ce34dc3303da10bb1da98faca35a0272774. 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/US3U82200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58fac17b6f87fe1ec95be591e87402849e13c73c69fc03ed69fc2dbab4a79c3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/US3U82200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74565f57b819189cf59a6486548c91c08864d1db5f7fe76446a7fc4c821f629e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US3U82200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889bf891b6e9aadce263ce92bf84166457e849ea8b011dbb96d37503cb59346f. 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/US3U82400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e5494e87637d4bfa3ad344d88bfb66249fe6266319ec0061afe7b17c3ec869. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/US3U82400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8c8602c9675cef2ffddb2574147f6df079213f210d48b1c66ed6a503f4083c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US3U82500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3373fec95e350072f27b9b31286c07e5f946b19227de02eba5af687f0899cbf9. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US3270402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51311e9ec63684636706fcc6107fad7f59a038532721b6ccae155e18b97119d0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/US3271000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce2e80d5c6040b8042aa4472c8e3e1c243584b5f56d081ca58eaa83ea511b93. 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/US3270404144.