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 0x31370d726a472153731812296aea3524bb4b6db0a682c5264323fe676d4525d3. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f4833c0-8ff2-44cf-bd59-45606a22fd5f.json and https://artists.proofprofile.net/proofs/artist/3f4833c0-8ff2-44cf-bd59-45606a22fd5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tale of Tsar Saltan, Op. 57: "The Flight of the Bumblebee"
50 Ragtime Classics: The Best of Scott Joplin
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 0x02c34a85024b4a40c117907ffae18aba5026295973dd7f9f515c1ab400c9f3ec. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH1708503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1f89b2f92f7cefdba0dc23d6240bc2a060393cd48ff4912ab80474b0645bc8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:59:30Z), 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/USCGH1708507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13373db658b56d68dc008bb38dc039dd4d075693c4f984856ca1a041f9c3b69c. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USCGH1708511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d85c855774a19929324013f01049f18505935717988b2f2686f3778ba64bb93. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USCGH1708531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b86e9830dda44c7e0843c0b7199f3c2b2f8c420e725b832f6cdeedfa6f189. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGH1708537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fe9a19bc6d4b79f289008d10f3504323268c1bbf4b3af8483b780f872c0c88. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGH1708545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d63b6c750c77c44d69f51827be58d5f22ef3baf43a71dc17248ce2db32eb8e. 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/USCGH1708550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25979ef2269ad63570fe3e56f82cefec026cfe7258a0eed2212fe64a6f151149. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USCGJ1791991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0afe1b1dc1c4dfad272bfb63acc5fa96a954333c4b6b154ef224b34322bdb5. 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/USCGJ1791992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a2f2d9a8b608b1fc1df13b6cb3904d0159836440a76bd46aac1ca56c28fd0a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ1792011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0886571aced0f34bbb0e52572adcc1e33a7e58c17933b607968fa432eb7988. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81778578.
Isaac Albéniz Recuerdos De Viaje, Op. 71
Isaac Albéniz: Seis Pequeños Valses, Op. 25
Signature Album: The Best of Classical Music