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 0x7a3f5af66f6c2520d753a4e69115b8209efed12b9d2a1f617cd4617728e96085. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3fcde30e-5969-40c7-a880-9f0e2394193b.json and https://artists.proofprofile.net/proofs/artist/3fcde30e-5969-40c7-a880-9f0e2394193b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soft and Gentle (Lullabies for Young and Old)
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 0xe6aa275d6b61d5d1e57b95909d81353e00d27b8057a58ba285270366be89f3df. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QMPKX1820013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8a12469577f480766cd9efdc29170c0991f6cf44f4fb24525a500c74214e3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QMPKX1820015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8420783d018d682732c77d337f354b373124138b5a0216602e23b5a713f196. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMPKX1820017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51ad127aea39b2ef8b2c8c0f3cfa4a8891ff168a05426b338a6ef89651d1eb3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:00:23Z), 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/QMPKX1820019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b97f1eef3c81d19ba217f07be005342de5fa762ac445b5b9659da8a1b669009. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:34Z), 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/QMPKX1820020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7095146a845d66652a496e0b84bccc98934f1c26e45f98d6fdd7ec7bdf6d63cd. 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/QMPKX1820022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe628886d68c01728aa94d97e7a049fd8d3f1df79e22192fd06ddf643a2870e4. 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/QMPKX1820023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bef77e676f0dabd72a06543b2872040187045e3d9ec3d28ad2695f893a2d41. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMPKX1820024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c279f06b067afea0d7b16886c9c47529444c84ccb5d15cbcfccd59a7173cf4. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:14Z), 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/QMPKX1820025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc58fa4866261a5334251049833188b9f365533d367a17d4ab746d055a2457b. 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/QZHNC2083279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eebb05ea2b14b108fb1c315ae0020849fe9847442194e0ada1844cd5d99d12. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNC2083280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28fa6ccfe19e8df7fa554f8236b4d95cecf1c6cf37238fed6f3f05f9966d110. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:34:04Z), 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/QZHNC2083281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74646bf02d7165f276df81784aa40a37c0110400ec407b8acf837238aa229f9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHNC2083282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ee2f1bb22778c824562b18a86be314a4b256c462e10e7f0d40e4103e64788f. 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/QZHNC2083283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bdc41393a38f20a67a5f9e01b24492509baa12f66ef9340c302ff7acce18e2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHNC2083284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35910d51d74bde657a700895b2e64138d9f710be6e3740ffd9e90ad6e7dac2d1. 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/QZHNC2083285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874979720febd2d1f28bb406d2e694c0108eccac5f60607dc8e7d2aae2518f0d. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:25:53Z), 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/QZHNC2083286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd50b33a97542065c6e7221bd98748353c7c25494d1780da31caa321f5a80c6. 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/QZHNC2083287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4127dee380177382721324fb91cd9514d0e469eb0e567f119bed88fcfc41e6f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHNC2083288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296af3d41e9e9ed3919923ab93252381eb9c65bce4b7fb6d711b5f093acce648. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHNC2083289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386bdb322e4ced8faeab42af8486df2583be7eef6e06854461a777de0224c17. 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/QZHNC2083290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462a05cacad143529aaf997e6f64669fd20f9fb1ab51aea966a1ee4b903c2a3a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHNC2083291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48219e9e4900ac86919ddf0dce2fb7fd0d24b9611e845ff9a8aa3409a57c944c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNC2083292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e2105477da3b36e687c292d3bd897fda0e407bdaf363e2fba0fb58fc44a99b. 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/QZHNC2083293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd1bc271b1805de48510415cff5602a0319e9c74eb5f8eac65d13374645640d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNC2083294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6bed83a2a081cfeadf2d23b581bc1d5cbf4f2541029b3797a977af07a83181. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZHNC2083295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6007af32053121702b1ff3fb9168864bc3f7e8dbd80d751a8aad33771c653de. 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/QZHNC2083297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a77fffa6a533a546ed0b622ffc4eb4c5f0ce254de451c2ebd4ea005a627ff3d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZHNC2083300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd44a4b85f3b6e21a8fa6b75a70dcea31de12de0b1fdf9eb866454cfa124a0b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:25Z), 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/QZHNC2083301.
The Bells Ring for Christmas (Little Tom's Holiday Lullabies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d459411cbb195a3acf1f6bc14ec2191e4f9a1ee9a9db5a487055ae9e2d7d161. 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/QZNWR2025130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed8a51db06f175c3a6db3c7db2c871cbd272b15e981b53fca9cdd356cee4c21. 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/QZNWR2025134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad78c9efe0500a69c008ed7876865be65bc2149bb67b1f1c9d4b087c45fbac. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZNWR2025135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037c1ea4de89805843323049b8e05aaa5023b7859cf55aed2242539aa90d4d4f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:32Z), 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/QZNWR2025136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fbea86ce06f4f9cd4da854a4249895f605299821a47fb77fc0aaf4a6e4e8fc. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWR2025137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c316a1e20f06fae14bd8ea45082a0b136993e55acf77caf1fcaf35c559cb0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWR2025138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ca587f033f5500285692025b1fb40bb4302a3c0e55d7ed8ad4b13bc97460f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWR2025140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd765352fc07e88adee9b916fe565550e0ff2e76b369772897cbf3a55bd8f0fbf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNWR2025142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322834230da2372c17bc4fe1ee4f2cf14d033a0024245c2a2dc7f41fda381bd5. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZNWR2025144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d85ec5d3222cada45194f1cc488134ac4969aeb41ba47a563d9b8fac6b77256. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWR2025146.