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 0x1ec15fbd2396e393c26a0f1398eaec08021065df4bb66a245232585bc07f71b4. 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/a147f4cd-7e6c-4f95-823d-b2c0f52666a3.json and https://artists.proofprofile.net/proofs/artist/a147f4cd-7e6c-4f95-823d-b2c0f52666a3.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 0x1ed2c6025dde85d3e6f1119b8cb82c441d4c42f5ddd939910b544fd0a079bac3. 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/GBSMU3314394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc0f63a02bc2c2749a7f1eafaace3dc77b74515ad5662dad6e370ab939466a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:39Z), 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/GBSMU3314396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65f2ff155d3df4356ac6d2d94baf44885bc67538f2883ac8fb428000aa5dfc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBSMU3314397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be68cce9e98e01c9777f221275c858e1e1f2d47fdc5a59bf34bd3663ddc4438. 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/GBSMU3314398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d144d4375376396b63bf2542171c122ec3d02990363a5c765e03043ca0477f2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBSMU3314400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d42fcb67152bf307ff4ccae35db27d517dd8d848795b6b60e45d98e584f7a96. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBSMU3314401.
I HAVEN'T WRITTEN THIS ONE YET BUT I'M SURE I'LL THINK OF SOMETHING
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97e0ba14d151afc1f59aef64f10df5f15690b15639ed427b6da5df053fcae1a. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBSMU3314403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e506eb41d48e09f63f37d585d51e2a44ab3aa36402a35ce71719f10cfcd4b0a. 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/GBSMU3314404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703c60ddda931a3f40b1a564438668bc4191e359c7bb3e7794a6435ae642e1b. 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/GBSMU5777809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452173fef4c19cc793a429c7a81f92afd7b8151895018255ef299c65b26e86fe. 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/GBSMU7234498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e784cf6d3996966e28b28b04c0fa46eecd63018fa94e2dcd0dc69e32d2d494c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBSMU7234500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e83671c6005a13f14049fc8cb86921d784d90d65c1d9e06acab88f6075c50. 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/GBSMU7234502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289872413f4cbf5f2b78e1ff106a28a15eae89ee5cc98a7b345acb2e5572536. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBSMU7234740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7c80c698213ea6ecf9814087204f1606358ed41e5e008701e7052b428e7039. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBSMU7234507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546000cb6232436cfcf1f355cdaa299687420981c9eacaf37646362d7d0ae883. 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/GBSMU7234510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7de8720dbd0bf34d82c53f134823e34b4ac5d4c6d9c0ffd104ba5edd590140. 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/GBSMU7234512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c5deaba7339728ac7e9fedd6b93fa6557a2f4db52634ff1e583e2f2f55be7c. 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/GBSMU7234741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663002a4590acf0489dfefc810bf6fbcced538743d2a56c7dc57ce357d2f0ce0. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GBSMU7593490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f64daa8d3473b4cd82fb2580eafcc5b4949cd2ad1a096f8aaaeee560f03a4bd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBSMU8039805.
My Ass Is A Dumptruck (My Thighs Are Also Dumptrucks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757037d52a037b7c854a25231ce644f6e3ae2c0dc3f166aa27d693569ae7b51c. 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/GXF972452859.
Excerpt From 'Lighthouses Of The British Isles' (one)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4142955d60ae78590335f41fee0c3e805e8f39a5dd93d85ccf4110003ff01f9. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GXF972462079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c14b9569ac4b594566edc7a1ddd315cd604247c83ec6ad34db49272261d17b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GXF972490248.
Excerpt From 'Lighthouses Of The British Isles' (two)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbedf23fc06234d0d55937ea5a42ade31b2c34b1b820b43d7dd64fb62b55080. 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/GXF972481782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880120d254ee5bdc938733f1f2a55876e72729ace8fb3ca3e941f9be8df9ad6d. 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/GXF972432922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc1f094ca4ef6c39595e8cc5a35765347347a312f1e2559a82bbe3f1e7d097. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/GXFHP2485638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c091de40827893836ce73ac1da0da4875ca068bf22cc447efdb05d0b72b00. 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/GXFHP2472490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e0b82f03df33be54a2ff5693c056c49c0648c1416c45535e30483aca4c7729. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:14Z), 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/GXFHP2476357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb928d76e6405da3d71f0f482d59b50726ba9492fb057ecc7f6e6a3a833d3e455. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXFHP2447039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc126deea80ce76e69edda93143963c4e7298531e5b67f953d8337dd9267c6e. 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/GXFHP2422001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9849d1de98cf95a571833b0b102f24e0cf25f111823a163f0c370a71a7a0f52. 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/GXFHP2435408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6bddd226b5d5a09f7e8b8e7a94f456d7a7a6dc7ca38fdcb588de84af93ee7b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:54Z), 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/GXFHP2474429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc91e6058ef4ed603b0f2111c93c40b51e342c081fd342e56fab6eceeda0c35. 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/GXFHP2454564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45130cbca3541c91337dcf8fc53dc9c9c1a3cfa82468cf288e09b2d733dd79e7. 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/GXFHP2438909.