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 0x955c242a2f3548c7c9ca2382a7ab7521beae9e8ef7efa9ae03ab4a2044c99f94. 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/c39b0c86-6f81-4d54-84bd-6016364f7788.json and https://artists.proofprofile.net/proofs/artist/c39b0c86-6f81-4d54-84bd-6016364f7788.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 0xfd80f5c82802d762c263b171ad706fabafa7bf4bf21162a96bec536739825d73. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USSM10023856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e03aff9e5c09b47ac59f4471bc8ec101ac952ae542f8747cc6389472cad1b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USSM10028805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f4d6df20bbb723c9789a911f37c030ee19a10124cd49837dcb7706db07183. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:22:15Z), 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/USSM10027506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ead0b81b1a3c964e5b6a855af6198d2110097a35ca4745319f9f09c509faa7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:05Z), 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/USSM10027507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30f847566e89afc199fa2f29254afb63c97e52758bbf64bb8e584a2a72edb06. 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/USSM10027180.
Charlie Christian & Benny Goodman Sextet 1939-1941 (Jazz Archives No. 121)
Swing Time - The World’s Greatest Jazz Collection 1933-1957: Vol. 7
The Benny Goodman Sextet - Platinum Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e743325f4ac168303bc03bc5339e42c3f3442ae29e7fce429495283bad68c5. 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/GBJSS0500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd87d089b1aceb8181c4808fac528ae2bfd03335cd54d085db9d9245baa977c3. 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/DETL61608793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb48495957c20e9817139aef3f67b72565bae057db0337267603773d682f1325. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GX7AX2200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b7b44cc12915672d4b9894419aeeaf5cf51a72e097ea8111637e729d436bfc. 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/GX7AX2200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af41a6c39ec64116c03c46578b27fdfe7ef836d0cc1697061e79434fab0bf5e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:22Z), 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/GX7AX2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac5f007e59ef3a4f13b2c4c6a019d053db089160fee8a24cbfd2a642889e4a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX7AX2200286.
Essential Classics, Vol. 572: Benny Goodman Sextet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea8c6fd9e036636cf87262fc02b351a12e0f2d49865516cdf1915fb0800128. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM10023006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfb86e781548900383bd2a65bc60c4c94089b6449f7a93c7f26fa6b2f0550ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM10012540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c5217916d5ebc14889e3f7af2ce0553777c2388459a779b4b7edd1ef9bf327. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM10203414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4572c7a77c3bba3edeba1ac9e019196804c0eec34da81c83dee1bc65ba55b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM10012543.
Ken Burns Jazz-The Story Of America's Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfb86e781548900383bd2a65bc60c4c94089b6449f7a93c7f26fa6b2f0550ba. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USSM10012540.
On the Alamo (feat. Benny Goodman & Charlie Christian)
The War: A Ken Burns Film - The Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa350b18cbb13c8a7c537a138d986128fde9442d0932404616c6c2161383af6. 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/USSM10112762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfb86e781548900383bd2a65bc60c4c94089b6449f7a93c7f26fa6b2f0550ba. 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/USSM10012540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3940d0efd43f4a48373fc1278f780b65818a398a78a7952eab6c14a36019a3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM13900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd0d36ce80baaf0e6de8b754912be82114e7c3ca946bf8496b62548416bf959. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSM10024197.
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