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 0x9eae13fef2aec4e3764b7b7c6dfceada172bc948ef34b0592ef76440e4a78252. 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/a57242c5-b732-4d8a-a2a8-7d66d2852fca.json and https://artists.proofprofile.net/proofs/artist/a57242c5-b732-4d8a-a2a8-7d66d2852fca.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 0x9fa75d13643b3cb45980ccc041b41a187e14dfeeaf6db0c9e695bd869bc1eb05. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US2AE1000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe947af3c2bbf06472607a02941ee5f7451ba3cb367a04be69163ddf9939fbbc4. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/US2AE1000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286593252516a9c8e61e5db1f250a5ac94ca5d9f809e8ee050bbbac469a9f8e6. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/US2AE1000308.
Le Sexe Au Telephone (Do Me Do Mix) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe119e08432415d11b674f231a63acb51d53dcc2e8aca9826f2e904933b8bbeeb. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US2AE1100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0830a6dbcbfef868f7a326da67505efe7651a66b3452bbd33149839b4f498e6e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/US2AE1200102.
It's a Double Mazinka! (Mezinka, Mezinke)
Spend My Time With You (Electro Swing Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d6cfb4f56f7e458226816b15f47e45ece3ea798fe5ef0a1829a02c77c7dd6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/US2AE1500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c8e7d6a6e31e0fa3b7c77b173737662cd8f10ed17e89f52dfda5fa2936eb77. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/US2AE1500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffc673e749c8264eb71b35c490c7252569d2155d041da0007b2536ae55e5528. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/US2AE1500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef18120caa5baa3fb89b560588b3c92eff0143a95a8ebb3d025b6d031776a2. 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/US2AE1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc289e7d44c1091c5613ae4d61a50807224258218b6aabf0a4394bc1a4967f7. 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/US2AE1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a9c46d26049cfa5c389108f1d9378d4f46ecf00b31eb8beba86a94ce8cc314. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/US2AE1900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d244c76bf367e27945c3a36ccb608fd53a4f31189b6951c302b64340217a9db. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/US2AE1900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a8674a03b1fc897f7c0469cfd9d260e90c425a53f7d91aba6b5485a3518360. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/US2AE2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf350f803e5277e87acf4202e144d076155ae51460ae199c6513b1b182769d49. 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/US2AE2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795fd2a66b43355e2b2d2eaf7cf798d49d5a1f5967702559b8c4f3ce0e40a4c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/US2AE2001601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe858a6c4bb25a3d3132d1de1bd08996aab81acfe3f341e72277e4cc6fda217f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US2AE2001501.
Let's Face It I'm Cute (Roaring Twenties Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401ed30b595fbfe5a9e542ceb0cb1adcb7307f79eb7e9e3fd6f85c81f0521f94. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US2AE2003301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39395f82c156711cd59f28c307c4f4869ead0e6fab92a1d19bbfc58d32280545. 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/US2AE2003601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088ccdfc2ca3d4b745258583696201ab9599a03b698d8fdbdb1b8a0c44dfcd2. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/US2AE2101201.
Limo Spa (Space Age Bachelor Pad Ultra Lounge Spy Rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb650e1f235812d144611b1b0877bb768debd1bebf749cae7a4f6afc1bbb7f783. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/US2AE2101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2335c2bf47cdd803fe58a25c8ad5db61e85bbca85643418b5806c7c9e57707e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US2AE2103201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09585e24d541b297377d9d184255c5cecd7f916bf2867f2ac6af260d231e056. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/US2AE2102701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff38b6143b4dca64b2684773addec137d312174e0301a8acc87cebe9ed00bf3. 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/US2AE2300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeba753c7c70e28ffcfade148025a4c8b2d8e21d9a96ee566de2727bd26118f. 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/US2AE2400501.
Electro Swing Party by Bart&Baker, Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc813743ac39b66480ba19dc3c8b0e75ec0c8feecbbc5f8569c6e4050b1fa8bc3. 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/US2AE1800301.