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 0x2415e07c2b3e873c71ba1d4bff901a47f075dadd673decda96d320c68952cc06. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e6fc202-7fee-4307-bd64-9926e5524d67.json and https://artists.proofprofile.net/proofs/artist/1e6fc202-7fee-4307-bd64-9926e5524d67.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6189024c8de76c5a5d3451568cd4c4f312466b89c3aa5d997777bcbc1d4a6b19. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEU32118727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048e76c02cefa723534ffd910f911a6c5aa089312cd7e1342ff369227c729de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU32118730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4bc81f451c2c4e53a619666f4badd84fe27f0e5e79921efc1e59c2e97cd0cc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMEU32118732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf49c31f68c3b46ff4f5fedd6f10029962c8ec936d71f0554c6d27a9bc6381d7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEU32118733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeef41e46a4c71d04cd53406033748da953db03757bb26ce3a730f138109ef53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMEU32118736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf2a56207c16b8867e23db7df60a42869c044f382de35ea82db850370cdf801. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QMEU32118726.
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 0xb184f79fd29329091191e6bb14cfaed1c1b6443cc04c11372f5ba49a5639c4e8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMEU32118728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecd300e858628d26453cc757fa050801320613ad4a457edeb1674db4d8e9da4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMEU32118729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891e19391c7b5dfeee629345e7c4d0201a21cb5f18a82db74273dabef6ff4a0b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMEU32118734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7257c5a5be9e501ff33f36d5a112d25631acb5d29de6a3107f037eeb90dc9. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QMEU32118735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d134628d0092010448c929874f86850f510422dab369309b9fe7fe4b2873bb7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QMEU32118737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b3596558a934c9b108d0595a5c48123bb1b30501319f0acb50607c447bbb80. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QMEU32118738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b223d22ce027cfed663084ac978583026508f6c7944a6e603c460c9c64a491. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMEU32118741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581dfe252be926a4580c26350641eddd0853cfa2a1003d40e73e544c7c4696ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEU241904482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a0a2a92f20dd17ca87e7917c6a768dd2e5f6968ef02558737f9401b9f5ab98. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEU241904485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abeb0aab1d9394e1f8654a3c6a242eb8582de30151736e36cd643679b8dc38c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZ901800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842826b8f56760c119cf7d173cdd6d1e27f415a5b5b9c902be81ca9f2db41e55. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZ901800376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd157313c76cf3dc86ac1fe10ee338ca47d92fb1f4568b77b15d3000b47ee8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEZ901800380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86242f1868ef6ade0cf559ebec8ad753237424c218df9d6d82e000457bebf7cc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SGA511512904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f63c65cd6afdea9367b904e1761f7a0ee8312d6698765f00fb44d9f7343d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SGA511512905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64454c3568ba26b54ed1f4c389cfefafd39a92646a8873c8631989859d0c080. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/SGA511512901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a425937ecc49ae801370758b2d61892895995c2cc0d8e0141773c791bc192. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SGA511512902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccfc86cf75470bb045e51bb07e62db080b4234cc0cd12311e6cbb8b6447eb8f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SGA511512903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae03f96b211e31bb3240ef238359a17c889bc90179ad27544a939277ab16d5b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA71393386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460492f3869b7d9c10ffa1d4d5e9c4407f7ecc65a1c90b7228177ee0b20ee08b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMDA71393387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd561904b28c961ad61778f21ebb14ea7095cae08e056232cbea1a8f53d243ba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA71393388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13776519d0a2952192a9f4c141c003bf5b11076be8eeaf137dcb390480e5bef5. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QMDA71393390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a02a923e950e201bcc6e63d5fa0d1092118ad036d28b2aa15ddeaab51e60c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:03Z), 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/QMDA71393391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6f1a079e12ad3f455df0ab145db9ae20d655310f23cd74fe53f6116f81dd8d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA71393394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eac7067c0cfff7c024473258724a3cf3cef5c2f53d29c38a799f1351ecebeb0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA71393396.
Tales from the Darkside - Brutal Mights Demo 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0943e38d2661b92ef3cd6a78af89df1fa468f2093dd8366100e8ba7836e1fab2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA71393397.
Unholy Madness - Brutal Mights Demo 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3042828d0c5a10dad5eca162fca4fd09504f1a9d805b4eb1f2afb6dcc69953. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA71393398.
Several Shapes (Several Shapes 7" EP 1992)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5e48e85b0625d2c9b64ac08452c521ef27b895f549cfd62093ef30d83654e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA71393400.
Corporal Punishment (Several Shapes 7" EP 1992)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871d9c7695f38fa756ec8b5129a49df2e7c0d5980dbc4bef58e82746c9b66cf5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMDA71393401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0253670624c0e84d03d6b73dc6c808cda585b3135d87e3b14933ffa3955dd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA71393402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249a067760e96524ac8f86c3b8f7a21d173bde02b6393d6b0c5e2bd3b136ae99. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QMDA71393389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcd778b7ae874bbcf43d2c8d4995c9b7b3616d6e550ebdc2b00ab80ace8091d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMDA71393392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed8203f6d63be693adf48d9cbc10d8eacde52ba91837719b6c53c8d6e7d97fa. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QMDA71393393.
Beyond the Gloomy (Brutal Mights Demo 1992)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c301025c6adfbc1fcba8c53874343b9519b92c0b8487766aa276d5153a20d3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMDA71393395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976bf31a3ab7e704b7f91300bd284cea464b5f50c775ec3e0d89fb9874da2ca7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMDA71393399.