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 0xc4a2c6fa6ceebfc5e2a9eedb0387d49eeaf9d08e171534f717a8f76792104b9d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/665f4db9-75a6-449b-a692-eceee4affd0c.json and https://artists.proofprofile.net/proofs/artist/665f4db9-75a6-449b-a692-eceee4affd0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete Season 13 Collection (The Voice Performance)
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 0xa9bddfda9f9f0b57547a3f9bff7805704ce93121582176ee7c563912edc982f3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUM71710823.
Girls Just Want To Have Fun - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e67281b5adacbd59ba853e897cde5496b0e8d8816b761e0872ba4f3e119121. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USUM71712114.
Beneath Your Beautiful - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cca47143342e13de85aebcf0133f426609072b0bd4c27cc8c0cd4352d8558b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM71712233.
Angel From Montgomery - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5345dcbec24f344d252757087c683a5a0e9985b9ad5641a8708002265117e092. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:55Z), 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/USUM71712786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c57c603e16d1132834b7f1c1d30eb8f225b7f799d54a2de9f382d46c65d3ede. 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/USUM71713283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad08a263b7ac11b0d9275221a741e01ba6aee8751cd32b64f6cff629cf1c66f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:38Z), 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/USUM71713579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4608f924c0d4836774b690d5267a821b91576120dbb26cde44ec0e2ed6766b90. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USUM71713780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e809e70d86e9d5936e6a61b74f51561d7e0d52f0b0cd65086dfae07b50f93c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUM71714050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb835f7526d0973b66110c67ae23868a70e8d8b9a010e37b25b47efb0cf0f812. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZFZ32178464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21010273639e622fd0e2d253eec8a95a651c74cf4f221e1426a84e76d19ac4a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZDA62105156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7005d7a39507f9d35cf6b203e6227ba461819c027d1826e88c42ea5b80550f05. 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/QZES82129053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fac765425f65bcd61a32342f1d44ef7c213fc76c56a4cb1c15c79e73ba152e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN62153926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0325876793860d027d1cabc99f1a96b94067124c56bd158a53a599a23967408. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZZ8A2468417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a2b504f6def009a8f04a21f58736de5fff60c05584b803a05ddfac74d2019. 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/QZZEC2468699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ca20f27c7025eb94d6f317e030dc2773df894f4d2ce2d2a1bbc101859f678. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USLZJ2514949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a2b504f6def009a8f04a21f58736de5fff60c05584b803a05ddfac74d2019. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZZEC2468699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb63f575de6a5342c8f03a149adf9c54a37d9aa34edff694a01937690d2de67. 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/GBWUL2574751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ca20f27c7025eb94d6f317e030dc2773df894f4d2ce2d2a1bbc101859f678. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLZJ2514949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a2b504f6def009a8f04a21f58736de5fff60c05584b803a05ddfac74d2019. 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/QZZEC2468699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0325876793860d027d1cabc99f1a96b94067124c56bd158a53a599a23967408. 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/QZZ8A2468417.