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 0xbb849adfe99b23854b8bc30c94d5d24a872c77eebc4d4d7dd147a29f54a5c275. 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/1158c694-1141-4dbd-8dde-88cb10f19159.json and https://artists.proofprofile.net/proofs/artist/1158c694-1141-4dbd-8dde-88cb10f19159.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 0x3785739c61c083758b024dabbad0816f4185e15354ed5277a40c3f174c9d59a7. 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/DEH740200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43272a5a0f52449db16a18a816d94c27a94fc13e7beeafb0af0fbd0fffb0970. 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/DEH740200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e7384477aec9c8b4f36608150cab6857116df17ee362ccb7595d2438a8d3c1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEH740200452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecae84b1b8c51fd396a0d09fb259d9dc9d4a9360806ed89f5eb0e762aa092940. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEH740200454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d121938c430fc19fa474925c0f0385a0686317d797d007dbd6062385210c5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEH740200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aafc4df520b1aa44fe81674c395eba114a37a50ca80bd77cac27bfc97c4861a. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DEH740400962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2379fe7def4702bbd4346a8d0dc0c408ef34ffb44c0eed1635724049ff261a24. 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/DEH740400963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0e64ffd207c16315910e15c69bd7b923d08ebc98256de68a9baf50bb56260a. 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/DEH740400966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef80ec61eb51b1f084963737b367c2d56ee28ddc6a2312a3c2474bf4dd182eeb. 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/DEH740602177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ebb3482654a31bfe573446fdd559f13100675eac2c03866c48f32c9266c759. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/DEH740602182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685a7cc73201e969ad281244fb7ba3c6fc49eec664e5485f49816540601d906f. 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/DEH740602183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ee7677e049da5e908ea5fd4067e29e3895ce3b09a08b41d0ac1a3948172c5. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/DEH740602184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591d13138373c0355dbbe5d2df53b48f9271b8d8c26b4931154f4c4a85ea899e. 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/DEH740602186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa510c8f63003536e8fcf6751468ad8a45020d3a621ae9b8b75ef4707f89aa721. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/DEH740602187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71179962b7de1faf2435ef82d1ce2a01e4416571e51424d79b1d0d5404dc9b47. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/DEH740804958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70eb5e9ad0f60e61f92f0e1336e6babdc2395fab846a83b2b96cb426a78dcfc. 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/DEH740804961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652a9d3c39ec9ee56f8bce822e3a88f6621f715a3d1ae8a967d04dd138a674b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DEH740804962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9f7d2a1e16c4c395b380685005f61c1ea37b99093fb5b3e02b284386521e75. 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/DEH741114084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6123cc00ab15300f15b9d143c62e209efd90546eabc051e88ffe6295898722. 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/DEOB21750034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6738960f57757063d24bda5d796aed023ff5acf81734dbab01af8bf1d8ed830. 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/DEOB21900003.
Erotic Affairs Vol. 3 - 25 Sexy Lounge Tracks For Erotic Moments
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431aca8ebf00f7795b0a20db26313e7347249ee030676194dcecef88f1ef403d. 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/DEH740602180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b9fb2a6ade7a8ca82cc0a0477baf80160254afaca372861f9861130ceebb28. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEOB21100027.
Dinner Jazz, Vol. 2 (Finest Dinner Jazz & Lounge Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02a9dcb0072fb0f2417436fda3fa8f5ce02c6fc571c4b8c1b34a31a1ac476c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEMQ11401992.