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 0xc79180d1c14f1536132fa7343db5b4264ba5fac421fbbae87e3c1f5df925d202. 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/8f462599-6093-4fee-aa58-50ea72884279.json and https://artists.proofprofile.net/proofs/artist/8f462599-6093-4fee-aa58-50ea72884279.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 0xe0a915b5bd00c7847bb0eb3fc37310b7edea8c4f403e05215c127a906db54d69. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USB4U0851691.
Goldfinger - Velvet Martini Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68224d99ca0998997ea55d31e7f07ab4f6aa0b78c04e91310b5107bd2a78ed03. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:24Z), 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/USB4U0851692.
It Had Better Be Tonight - Velvet Martini Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc124289e347d1619ce09546a3db7af9f2574ae91665310694686688118f5b1e2. 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/USB4U0851693.
From Russia With Love - Velvet Martini Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a933bfa5d8fa1e7b8f8ac2886f9c630dfd56a7b4916dd511ab41a367fa1a4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USB4U0851696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be41bbe8cb79a5d4940bb58fc0bd5a4561dac3acd91d64f66804064086e66b. 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/USB4U1000590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cb2a8d0be12d235383bc8c564dfb95e9355fded5a25df00a45c06677aa418c. 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/USB4U1000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773c9cd476dc14be0ab9b562f3f09d50ec4c7df4660656da27ca638bef59dc98. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:29:59Z), 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/USB4U0851040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13981831f9af852966d9b531a2847f6550928cd1af4e237330acd00572613df. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:24:28Z), 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/USB4U0851041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582ca829a11108d0b8d6cb95c6554ca403243140c6e451e8cf043843604b42a4. 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/USB4U0851045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118b3189882735cea87c4aa2a5285454990a98b8561060db60fe749837482cd8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USB4U0851047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a915b5bd00c7847bb0eb3fc37310b7edea8c4f403e05215c127a906db54d69. 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/USB4U0851691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a407758e3444eff78095609faf809f0bb9f3f7f5ba83583aa8a84ec5ecdc68. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USB4U1000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe71037b7880467b28392178409fe9f543a8fb2d978cf545be95256949e354. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USB4U1000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce811dbc0b2a80243d802bd7c2f960de637762317c8f467fddb6e6f050f2c84. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USB4U1000070.
Assasin's Tango - From "Mr. & Mrs. Smith"
Green Hill 25 Years Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e8f79f3026e78f1670fab6986e9def1a44e8d6c13361b85532a41082444889. 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/USB4U1000595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d4bdda8498b2e41143932a3d377ffbb41e446d78eecde91689916ac38f4dc9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USB4U0851694.
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 0x54d706c51b634258b865e35f7088204238fdc4a10e88ff228e2851144aecdb86. 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/USB4U1000066.
O Mio Babbino Caro - From Gianni Schicchi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d0e5d382609296467535cd3ce98609674bad1d849a2f69d10bc272eae9159. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USB4U1000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091f3134630daa6227482dd1595870d2222f821908f8c3a5bd1def69f0ba25fa. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USB4U1000077.