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 0x372ff5afab37a4344bb0268e32a259e0c4a5baeff4958ea3fbd68f379e42ee9a. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ba8e8f0-8759-4191-ba3d-c8e56736b14f.json and https://artists.proofprofile.net/proofs/artist/8ba8e8f0-8759-4191-ba3d-c8e56736b14f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dragon Drop Volume 1: Alpha (Original Game Soundtrack)
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 0x7af801f70adc34abb6ab12bbaa62f2460c0c0221bcf5bcb0c0004115b6a4066c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHN2256498.
Toast Your Friends (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9449a263600dc2f823a91dca750b7e878b5ad5e07f9e3859dbc7997f4c9838a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZNWT2352896.
Abyssal, Vol. 1 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2776bf56f74a13f9d2164a597891b118930668f885533e0eb3555b66bf1066. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAZ2312968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f92cb190e0aeb2733fbfacebb439067135ca213975ba62d4b0cecec3932f12. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTAZ2312969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef55eaf5403d2e55be2d678d8b31b34c210b769d0f55271a8a82102a8fa51ac3. 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/QZTAZ2312970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff40a0044252eb98af8d54d7250574cc33901b98c50ee7fba18ea49d1b753b1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAZ2312971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4685ddec2c5cd708a829e7730062560eefcf9c7220563f18aeb6083f588db8bc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTAZ2312972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a481bb9cd7ccb81f4fac925f18e199da4abe0f55b8fcc8c5f11861aa69a346. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTAZ2312973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db62f4653d8134a247ba3b6ffe98109f385341279e71c92831e8f40650f179. 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/QZTAZ2312974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d694da9189fca28ae3b473a7c95f2b3de3b49166432c035081a98875ef0bd5. 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/QZTAZ2312975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74e946d277f6300fdd66a9fdc9b480205b4ef01757fdfdb4299bf0ae810090. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTAZ2312976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa311510c78f7e903498a54b48b2ff2950442be1c24ba869a0f3c9b7b93175fd0. 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/QZTAZ2312977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fc55b2b0a34db277678098dc45da8b99ae078a0f4ea3d0a24c72ab3f34436c. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZTAZ2312978.
Abyssal, Vol. 2 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735331af4fc00af8fc85e8407fa2a048aa2d90e81dd723a458e9a24da28d3269. 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/QZK6J2447904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5e4922dc0dd482d15d0abef3c4806f10848e1cb5bbd21f9623f0d0e14d982. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZK6J2447905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70c12a71890c7eab1fc424fe5234591dc44630e157846b941039b664f184d23. 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/QZK6J2447906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49326d88f813d85c6f8dc3a85e92d31d70cb6fe1d0de8fca07d1bb0fc5d0856. 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/QZK6J2447907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662f7fbdfd358b97512141076349a6496ab2d04dbfcc6b5bcd28fa03f5327219. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZK6J2447911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd98eb5718dd89894e3566e6ad3738e77a2aded82d8105911d70889a55fd808. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZK6J2447912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2d5152eceaca2abe83a62f114dc85f73e867b2fdb1709bf6b31b1d1b67cb91. 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/QZK6J2447914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47302297410f951ee186130265c17f8d01ebc65da7cafe8f4ee617c1a7e5c3e1. 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/QZK6J2447915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5887713f634bd9712d8ffeb4d4a52fee78fc119df9823baaa3f45089a63ea0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6J2447917.