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 0x691aa6f9ac20087ff934780e034da1845b9e2a59323d0d2336e3d0ade1d943b0. 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/b8b9fa71-0263-4353-8c0d-14e4ab74a5fc.json and https://artists.proofprofile.net/proofs/artist/b8b9fa71-0263-4353-8c0d-14e4ab74a5fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x3d97a49882265cb3f565881ecb79c570b7d41d7720fa19490aaa8e9928cff33b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBPS83978636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ffadb9ee7b2f24870f3cc7e65244806f89132c74578b6f71cf15f45faedf09. 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/GBPS85469251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fecdaf1eb93bdfdd72c6a4d19715a5ddb5dfe120522774b0485942ab6351e5c. 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/GBPS85469231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46ebdf2c17825e0fbdeb2ddbf97cefaf18d797050d7a1a17446f1f8b15203ca. 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/GBPS85469380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87189708c819035d94f71944b83a2a58b489a0d820a36a5966f75361718cf03. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBPS85469359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22ee72870f04a7d51bb3ab75961c9ec7a5f329a145de337ba4679377a5b6bb. 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/GBPS85469284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbc2ed378683e7beba07ed8f335559e3c06ca371efbb824100796755428a92f. 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/GBPS85469365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed761508229644f6aee64ca49ba08b80dcf2fa371d1bd06cb693dff5c7b862. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBPS85469248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ccbfe0e3b59acd7e1ba6f8f7b7b461761619c7e9e0497511f26718e3dfc844. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:05:09Z), 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/GBPS85469258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dee31231c35480d09ad1226e045e00d59467ad7ecba1d1da1ab0ad536df781. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:52:04Z), 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/GBPS85469338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d98449daa6302a921b23c431e3866d38d2932b78b9e168c9e3902940429ed6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBPS85469236.
Study Focus Loop Noise (Loopable no fade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ace6f8962b3735761ec3d9841c2f87528dfe05bc1b93ac10c26864e85b9b32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLC8M2100052.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c8892d7c35fb340a890e2edafc8bf4331ba20f5d2b65504f4eadaef9f7b5bc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLC8M2100053.
Homework Concentration White Noise (Loopable no fade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a58b0e2bdc0c098f13605ef3a1e7331dcc6a2781b971f47514404291945d72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLC8M2100076.
Study Help Focus White Noise (Loopable no fade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a58c2be93b14a7efca7e68dcbd437fb397b1d1881130062366c93c20085c0df. 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/NLC8M2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd205e19295fec493d31150354246ba988991e66103a23ea648bdfa6352dccc. 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/NLC8M2100070.
Airplane Relaxing Noise for Homework (Loopable no fade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c86897ea8b357015d8810466d4ee3a46987dcacb7b1067b2ea2448dd0d0f1d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLC8M2100055.
Airplane Cabin Relaxing Noise for Studying (Loopable no fade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f22eea14cd295cd764133d769d572197ecca62932079b10214ade9338baf5c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLC8M2100054.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7edac26f2ad458efe4139ad1a1b467beecae0c2e2f29191887ab60de9cfb93b. 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/QZTV32483587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce20a7b43cb98a0eda223095df593cbb2e7956139740c200178845cfa2db901e. 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/QZTV32483734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e970115b3fb70e825fd77fb2967d9a00b002b494171e3030e9aca9c8837bde. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTV32483690.
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 0xc3bf677349ca8877c630b33b15c2f2fdc2566b1f9e45febb34b9968efa3f1636. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QZTV32483695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a944549f885e6969320169e8c037aed8715076c9aa3b784ab13147db71bd9e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZTV32483702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543bf52dde061be62d9fef8ce5d44b950a354cb6f34635c0505f0bf1dd7e4e26. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZTV32483708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca907f0f48b4d6178d1292bf46bd549fcde1eb21a8c0fbac0dd5e3d4d86c96a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTV32483710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5197903ff4a56191c2dc024448e2a7571b5bcf5b6d66190f0d4c61c44fb8b63d. 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/QZTV32483714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917f9b09657f1319f1c92e2179bb536ad67e50e5254746fcd68cc811bf4906d1. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZTV32483717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf95052aeb61051210786d34519e0bf0363cd6edf07bb15e9fd5acf8415aa7d2. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZTV32483721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1614572394ac206f6ed6b3e7c4991f803751ceacc6550ca31b020ff9da1dd56. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTV32483740.