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 0x4627485be268ac8e60837625c1378df2c739cd029a8b791f7c9c558c817cb3db. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31f04b01-7d3c-427e-89bc-8c048afa8c9c.json and https://artists.proofprofile.net/proofs/artist/31f04b01-7d3c-427e-89bc-8c048afa8c9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peer Gynt, Op. 23, Act III: No. 13, Solveig's Song
The 99 Most Essential Classics of the Romantic Era
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 0xd99908025a2ca328d5fd2cdc83b152401f0a03c8075ea1122146961c0222c93b. 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/SEAEO0542130.
Peer Gynt, Op. 23, Act V Scene 10: Pinsesalme: Velsignede morgen (Whitsun Hymn: Oh Blessed Morning)
Grieg: Peer Gynt (Complete Play and Complete Incidental Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398cb91fa002d9af077ebd9ae9b9577610a5fb319f21b5ab32930e1c166fa604. 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/SEAEO0542260.
Peer Gynt, Op. 23, Act III: Prelude (Forspill til Ases dod) [Prelude to the Death of Ase]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f32290283666dd1d91aaecb880e5048086b515eb3c0b5dd17a8e0fc71afc6c. 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/SEAEO0541210.
Peer Gynt, Op. 23, Act II: Prelude (Bruderovet) [the Abduction of the Bride]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06c87b210ae180ece1a867178ecf080d490f1ca25084e71c373562f61ded788. 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/SEAEO0541070.
Peer Gynt, Op. 23, Act I Scene 2: Halling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7d1fb2a1f144f8272e27d60d2366e00a3887dabf529e8a88861bc3f93665d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEAEO0541050.
Peer Gynt, Op. 23, Act I Scene 3: Springar: Bryllupet pa Hegstad (Springar: The Wedding at Hegstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45115468a21e6929ded4ae38e2267ea0a309b059653ea59477b878ab4abd284b. 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/SEAEO0541060.
Peer Gynt, Op. 23, Act II Scene 6: Peer Gynt jages av troll (Peer Gynt Hunted by the Trolls)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773767b58462a5765d5f9af562ac9ca4becefb2cfbbafe4029cb0129f0ba844a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEAEO0541180.
Peer Gynt, Op. 23, Act IV Scene 6: Arabisk dans (Arabian Dance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0e3a1513c3e63c4d5bfd9f0be77e29a336cb8f5940adfc7c4e3a86d6f511a. 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/SEAEO0542050.
Peer Gynt, Op. 23, Act I: Prelude (I Bryllupsgarden) [At the Wedding]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff2177c79cab21957efc6058cb727e697948c0c92620b28a0dd9eeff3ef59c5. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SEAEO0541010.
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
Peer Gynt, Op. 23, Act II Scene 6: I Dovregubbens hall (In the Hall of the Mountain King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ea908e0b5ad8e0b5aea9b38ba9ad2fd5dfbceb1383e58d369b515f23d418bb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/SEAEO0541140.
Peer Gynt, Op. 23, Act I Scene 1: Bukkerittet (the Buckride)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779dd6d1ac8ff5aad2b3979e93780146d74425160ae33f0984fa25bc01f51409. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/SEAEO0541020.
Peer Gynt, Op. 23, Act I Scene 2: Bryllupsmarsj (Wedding March)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18927bf68a7a4c7bff1a9d37a16943dfdc557ab3dfd29f41e8aae4b45a1f6cb. 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/SEAEO0541030.
Peer Gynt, Op. 23, Act IV: Prelude (Morgenstemning) [Morning Mood]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c53be6bd04980197f24bf6b5d8d6467f003781336764445b90626a261d3d0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/SEAEO0542010.
Peer Gynt, Op. 23, Act I Scene 2: Pa vei til Hegstad (On the Way to Hegstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e7878c2d28cadec4dae912aae6031b47f334aff3cca950f34e4ce26899015. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEAEO0541040.
Peer Gynt, Op. 23, Act II Scene 1: Peer Gynt og Ingrid (Peer Gynt and Ingrid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca4b65de2a32479aa3afe38151878573557c19325345eb9a31305b2683e5081. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/SEAEO0541080.
Peer Gynt, Op. 23, Act II Scene 3: Peer Gynt og Saeterjentene (Peer Gynt and the Herd-Girls)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69461b2cfcda26505b3b8d88abb553a30ee3b406ff08fd222ef2fd07dae00517. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/SEAEO0541100.
Peer Gynt, Op. 23, Act II Scene 5: Peer Gynt og Den Gronnkledde (Peer Gynt and the Woman in Green)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf973cd84830b090dac680ec5bb30991359ffdaff1c908758e3eb11664a29014. 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/SEAEO0541110.
Peer Gynt, Op. 23, Act II Scene 5: Peer Gynt og Den Gronnkledde, forts. (Peer Gynt and the Woman in Green, cont.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3510303f427dae2af9e3539903a30b3b73a58167b2c9ceab1edbbedb00fc5f06. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEAEO0541120.
Peer Gynt, Op. 23, Act II Scene 6: Peer Gynts mote med Dovregubben (Peer Gynt Meets the Mountain King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57f2f8f16d0f88652f80c8d68b629ca9fb5f63b8abb4115b2582534926355e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/SEAEO0541150.
Peer Gynt, Op. 23, Act II Scene 6: Dans av Dovregubbens datter (Dance of the Mountain King's Daughter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e6456cf2d29f981fc47c570de3f996b140572f4294b07f8e22351b5575fcf. 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/SEAEO0541160.