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 0x49390a9f62aa0c94e9f977df1fdc178f2c6ab4de53838f330d94af43a5c716ef. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56a6506c-a147-42f7-8661-ef635d86e1d5.json and https://artists.proofprofile.net/proofs/artist/56a6506c-a147-42f7-8661-ef635d86e1d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LIVE from the Bergatron House of Music: Improvisations vol.1
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 0x52101970c153f58c58e4e6e008cf2ef970e961ffd086402406c5a08252ffeaf0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZHN82455689.
Something to Remember Him By (feat. Bruce Forman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffc937f1273ad68dc08784ed40f15016af34c50dccc3010d88ed83aff5fd23. 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/QM56B2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbf37535325719ee89af407dd6f2677fa9036c92575a91a68c0bbebc92336f4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM56B2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae2fc592d9db037a87c29842d205b280f1e81e6aa332b6281a05ca3649a8987. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USEJQ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5d4153e52cdff1bbacff1b2fa26dfcff5e910f1ad99c59fd7259ee9e0daa0f. 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/USEJQ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df93860e0e0a6ffcb4ddfd2fb94e5458fd8af5c1c06f2508d8ab2a2e4d59699. 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/USEJQ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d22a638df30458a475e7d0e92e4766c0c3d470851681f1721151bb03724e5a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USEJQ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b436fc1c8e641e1e3889076a26cc3d9df4271355848bad1303bb326fbff848. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USEJQ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bb8d0711c711e99e6961bfa864d5b363c2a5dbc691dd7480e869fd7caa4aff. 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/USEJQ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e919ada0f90de1e134801fee6b56ab327cdd90b4e06c3f75c21eb58638b3a61. 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/USEJQ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad5c253cd4bb2b6ca395d627a2353b974926e32758979ea5afb345d08e9ea79. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USEJQ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d87f5da9d021f3328aab7f0e0838296ff7edc2afb77dd4f1d2fdba023e15eb8. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USEJQ2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b04be0d3d3139fed556400d236a20e7baaee64ade0759b4358e24c8c9ab1b2. 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/QZDBA2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa517f706b0a64a19166e3669de13c529c3f6c8712f792c8c1cb113e4be75dcfe. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZDBA1900017.
Viva Durant and the Madness of Madame Bouchard OST