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 0x3150e7fb4ba8e7b6a9881347f379f55b5d16b6735391f0f1fc7bca3f313aa221. 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/25d82bb4-ed79-4498-92a8-d4e0aa912903.json and https://artists.proofprofile.net/proofs/artist/25d82bb4-ed79-4498-92a8-d4e0aa912903.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coffee Shop Background Noise For Studying
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 0xd587287123e3d0ea24fe1a936fa30c1506f065fc0e49bf06d56d07c27d6d3b86. 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/BRITK1701553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda31de686165aa2374a463a6db6c861b746265012e80c5c92945b5025178748. 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/BRITK1701555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee6bc6b4268dabbb6ee01211723814d8f5308900da9ad9f9ce4417e7e657dc1. 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/BRITK1701556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcdc34472ade0233c4211423f4243927af5c3d85c2b278be077658225d7d7be. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRITK1701559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece37c32376b7b9e071925d497ab1d3c62d3bfb7c6a9d6f5fe7131c6ace4e98a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRITK1701560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c000fe883c1ae2e3bc40083d7ab1b0b3e7a1681f1ef58ca09b62e6b203110a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRITK1701562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c669ae54b04c81ba7c1c201101483009c9d02934f5f4195c55ac5b1d86f8a7. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/BRITK1701563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635575d5d22a215b9525849f5848d5ac558d4e104d41e7c22e1761eacc7b93f0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BRITK1701565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e598d215a3b9a4863b1e160103c00f851c1d5a4d957291d53385df80b7297c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRITK1701566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b03d977013b8203f8b77c004ddcb1d819c2e390c65b18dcfa4b5d630aa04c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRITK1701568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888e0750244ebfb8d5e11e847da35959c08e083ad4bdb5ee5d64b8cf60ef2a1b. 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/BRITK1701570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646349ee4dae8f3dee15e61190fc6bfc212dc3713aab5d589fef990c83e4b98d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/BRITK1701572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9810898b3af25a389857e73c643a96db9390010be78b3ea70bf3bc1deaa3b49. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/BRITK1701573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609dce07ed840af4ead01f1e6663653a5f9dd3cc173d28f5d4604b967cd9f46. 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/BRITK1701574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276183005eb65cd372cb3a225b216c40a9a04181f0e9452ea09159fd314d8666. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRITK1701575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa8f795d50ef2777edb44bdebc4325d6b7baf3729eb82428835501f880595b. 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/BRITK1701576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfc2c7e28e9428b823fb462b83a515c79794fabe350116f8f5fcd90eff97f2d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRITK1701577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb7b081b3d2c88634e36c9728b4f8b876c0e5105924b90bdbb8bdf213624acf. 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/BRITK1701581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabef99fd5a696cacb60089a6119b35f80acc45108104cd329c769f2ef5933de8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRITK1701582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeb685c251d8ca55ccd65001de418700e7649cea6a6ea020124c53201701d59. 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/BRITK1701583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b34c259b3e550e7a18b38658479d57e666a2bf07ef3859118ef87f01954578. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/BRITK1701584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84a8a82207f4fcc346cbbb0cecb78dba6f8a4fd083806314359f498850b1716. 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/BRITK1701585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5c88c622a466b927ff3feb1b5698f90669d6d29e027db59c0796e53b705df. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/BRITK1701586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9d3966a820ef67804dd535cbe853015370b1cd21585525c9d5fcb3abe9e3e8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRITK1701587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15b09793db8da886a3bac38363b5a92860f9a7be13918f474a2fe50bbcace1b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRITK1701588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735de304c42821426c81aa9dc735ad8086d9eef2b97f4eea7bf8d9dc0a78043d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRITK1701589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed58e5902677643cac0e31bad018c7dfc8379404b2392603b26b632c352677b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BRITK1701590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5b090662c1433de6a7542524c8699a82cb1895da811bb0a2297e887882222. 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/BRITK1701591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8aea412ceadd6b932262dce4382fb57e93d16c1cdaef79e207e4648dd29637. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRITK1701592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36c7621d25193bc595a574043507fe81d6d7e91aae99eda2652079adc99fac8. 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/BRITK1701593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e8901cf77cc9580154cf1ed98a6408eadc01090466d9b09fcd0ca010e528a0. 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/BRITK1701594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a251d91d3bf58847dde9645fd4810e9d7d1caed77afc69660ab15d99f7783e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRITK1701596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6657c1a3f6abb4e219adcb6789b6cfe44a04e06c2d02481860d4234a1ac64. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BRITK1701597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b89078c0376ee8e00e19aa1659209828c8bf810e5dd19ef7c54179ad8bf4cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRITK1701598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec01faf180160478e941d82fb8246d4b8d448729ddc358238db402ab313abcff. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/BRITK1701599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2249b4d5b916fb2beea272cdf974b2a8f299a77b8bc154b65296c7112e6755e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRITK1701600.
Background Noise for Studying: Rain Sounds
Background Noise for Studying: City Park Sounds, Pt. 01
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae353ea49a8c9a0876b48fe18f635003ece206862b6acb7a0d0bce05bb280cd5. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/BRITK1804339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55469e72c72aa318324d6f9b0423a3748ea837d690c606d6c2ad3551a61af09c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DELJ81906722.
Background Noise Lab – Deep Babie Sleep Noise for Looping
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