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 0x8a43222dba9f3f8bcc6031a6810c4c62989b0385d65a512260410bf2413fc214. 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/224c6deb-46a1-4807-9f2e-74e3501f0eb3.json and https://artists.proofprofile.net/proofs/artist/224c6deb-46a1-4807-9f2e-74e3501f0eb3.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 0x4dcd4eb14e90853251aaee98e6d29e141ad5048e8fc80581e5d4d6275a67e3dc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USUM72117641.
Basin Street Blues/When It's Sleepy Time Down South - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c9588c214c4c5e3329d192c6135aafe290bf3116ffe39042783b61af2d2663. 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/USCA29000806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50c410010aff16daeb75a60f6ae447157ac678e83b459f22f1eb515f3cf1d5f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCA29100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00f3b100a4fa5df2a279c1193f71e70c03e7f8c701a300b1fd5ed4207485fed. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USCA29000807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd34e65156e70b76a9c2b2673113f7acce28779736083165d265c56405df5bfa. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USCA29100296.
That Old Black Magic - Live At The Casbar Theatre, Las Vegas/1958/1991 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dafac66f3849341e6c8424d166d9f064c2d5febd4cc70422ff1f014c85cbf64. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USCA29000803.
The Music Goes 'Round And Around - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b99305bb112a4ad3b98f64fe8d5814d855bbcf97d6e438ac307b563f413db3c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USCA29100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238b8bfa5084931bafab44f0f9c55802cdd6ce41054b44a569a2f2afd61c847f. 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/USCA29100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb6194e354f3179f811379f873048d7cb1fd9e396bcc058256149a50f3e9a97. 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/USCA29100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06cb0e3ba755ee8fee12449ac61d311a516e88f4b1d1cc3fb4b3e278b7bc2ed. 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/USCA29100291.
Louis Prima Presents: The Wildest Clan / Apache!
Sam Butera & The Witnesses Play Music From "The Rat Race"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cb5e1c9cfb16b49923dccbdde6491ae938dc1b017c948d35b7a26e49d6b042. 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/DEBL61331308.
Itsty Bitsy Teenie Weenie Yellow Polkadot Bikini
Anthology: The Deluxe Collection (Remastered)
Les Plus Grands Saxophonistes: Sam Butera, Vol. 1
I Feel Good All Over (Live On The Ed Sullivan Show, October 14, 1962)
Essential Classics, Vol. 654: Sam Butera & The Witnesses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97677da1e380e05af9c08efb662997cd3ea6ded006d4ea727a4f660d599b1cf. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USCA29501220.
The Marvelous Mrs. Maisel: Season 2 (Music From The Prime Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc001a8f91de7c3b8da5edb4e76d7d8985c65ab9745476e9d3d1b33e0cf994d. 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/USCA29601275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfcc194dc9a6ee5806f8292a1df858d877a798a900c08fcc8053622fc6fa05c. 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/USCA20200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7b4477d29444af5c13a1ac31b18c50c3d74eca258b6a793df3af205a43c145. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USCA29501047.