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 0xb36f4c858c1d49c1d2556c43928974945f629407a576e366e2f8f657a7b57c81. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad53081b-ee36-4963-a079-1610dbc06ce9.json and https://artists.proofprofile.net/proofs/artist/ad53081b-ee36-4963-a079-1610dbc06ce9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Essential Warsaw Philharmonic Orchestra
Requiem, Op. 89 B. 165: Introitus: Requiem aeternam - Kyrie (Vocal Quartet, Chorus)
Orkiestra Filharmonii Narodowej w Warszawie
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 0x782447bc0f97c24b38bcfd7b56b4375779281709eedbd8edf3315f842db1d812. 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/HKI191413601.
Requiem, Op. 89 B. 165: Graduale: Requiem aeternam (Soprano, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd551b159862323fb22a10ce0c19522c91ea041fdf2cab7074e2bddb02b4275. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKI191413602.
Requiem, Op. 89 B. 165: Sanctus (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb556b72c8c63bdac815db24f4e425a4a035985148e38545afdf41256f63eb6f3. 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/HKI191413703.
Requiem, Op. 89 B. 165: Sequentia: Dies irae (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f456410a45cfef53242619af36cf3dba806e21c246ade6bfafdc8bad03265cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI191413603.
Requiem, Op. 89 B. 165: Sequentia: Tuba mirum (Alto, Tenor, Bass, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411349b845d86b12a5846dc45ccad09a2b3f0f047ef832ab068286afc9f079e6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKI191413604.
Requiem, Op. 89 B. 165: Sequentia: Quid sum miser (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f94927b8c6fb2c3882421276a6b279d6831ae5bc64990f396e50f64da2adb43. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI191413605.
Requiem, Op. 89 B. 165: Offertorium: Domine Jesu Christe (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b3b73d089ede8faee8ef7f3db99a7d8c49a3cb90aa069c480e28cbe6c51c54. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/HKI191413701.
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
Requiem, Op. 89 B. 165: Offertorium: Hostias (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf560089ea916f96495f1627330ced8b4e59efb6e0369c5106c6b93c4d9722063. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/HKI191413702.
Requiem, Op. 89 B. 165: Pie Jesu (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38592101cab8a0d88aa8b832a47ab3e725c79f60d7704069d30eca90bd7f27e. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HKI191413704.
Requiem, Op. 89 B. 165: Agnus Dei (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f650a3fb56fe1c688b3ad537322defa48b2986593184540697df5d24adbe18. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKI191413705.
Requiem, Op. 89 B. 165: Sequentia: Recordare, Jesu Pie (Vocal Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa7aa0717f37a5c9b09156f9f0044907a1b06d5df513bb3f7aee1e832114d8. 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/HKI191413606.
Requiem, Op. 89 B. 165: Sequentia: Lacrimosa (Vocal Quartet, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3083c7616bd1023fb82147730d83733e371d28b22d5d30dd6f0ad0674a449ff. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI191413608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e26788e888e319daea7e31ba908b04680d85bcd8b3f511b180400b856dd316. 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/USB8U1700937.
Das Rheingold, WWV 86A, Scene 1: Prelude - Song of the Rhine Maidens (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e6c1a916d13eaf07bc43736767f2025bfb3f565c2be32b2060e6d60d0bf2e4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR50X2407201.
Siegfried, WWV 86C, Act II: Prelude - The Dragon’s cave (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d110d785cf14232291263df9d4dd225d03eaec95ab47af6764cb4685fcd9928. 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/FR50X2407213.
Siegfried, WWV 86C, Act II: "Du holdes Vöglein" - Siegfried and the woodbirds (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0209cf6b158cb7bfa1448c52e1059040823ee99b3d93493064712a7621ba5ca3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR50X2407214.
Die Walküre, WWV 86B, Act I: Prelude - Thunderstorm, Sieglinde offers Shelter to Siegmund (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75902551564a03dd61b7b8c70611a6210591a2e6c837d2b777c75fee242633e. 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/FR50X2407206.
Die Walküre, WWV 86B, Act I: Spring Follows the Winter Storm - Siegmund Acquires His Name and Sword (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd370100f457d4f5a9aa5479460b285503516006640aa12c10ca05b45978cf3b1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR50X2407208.
Götterdämmerung, WWV 86D, Act II: Hagen Summons the Gibichung Vassals to War (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65642c30f38c7579dae296b80c7d1406d084e2572f93857341a4684c5ff75657. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR50X2407221.
Die Walküre, WWV 86B, Act II: Prelude - Wotan and Frika Argue over Siegmund’s Immorality (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc326f47047a718a15056f758855b4a9999e78bab24ff69630639ad081d4e1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR50X2407209.
Götterdämmerung, WWV 86D, Act III: Prelude - The Rhine Maidens Urge Siegfried to Return the Ring to the Rhine (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280daf1a9760094af034e1f2889b9347b24edd276e954ce29854046ecc91caff. 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/FR50X2407222.
Götterdämmerung, WWV 86D, Act III: Siegfried is Murdered by Hagen (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90b571f067e51c339beb303bd0c59f0e356f468835be2c2ee150c41c923353f. 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/FR50X2407223.
Die Walküre, WWV 86B, Act III: "He who Fears My Spear, May not Pass this Fire" - Only the Bravest Hero Will Free Brünnhilde (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f82fba3f6a8bf05744e6b17680a3306dc5f32b97e58a28a288a9f659120f77. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR50X2407212.
Siegfried, WWV 86C, Act III: "Ewig war ich" - Brünnhilde Accepts Siegfried’s Love and Renounces the Glory of the Gods (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec3bf13c1077fa1ed822f3c1b43adbe8bdc2e15869108d0c52a757d22a2758e. 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/FR50X2407217.
Götterdämmerung, WWV 86D, Prologue: Love Duet No. 2 - Siegfried’s Flight into the Wilderness (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d37698619cd01f4a1ae6c45033ab33ff2ec25b998c8b3138683b398148c07. 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/FR50X2407219.
Die Walküre, WWV 86B, Act I: Love Duet No. 1 - The Incestuous Tryst of Sieglinde and Siegmund (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca89562776241fb74af5a1b0509fcb3de1f6b09fea93af7b3d39ea0bcf3b9a. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FR50X2407207.
Götterdämmerung, WWV 86D, Act III: Brunnhilde takes the Ring from Siegfried's Hand and Lights Her Funeral Pyre (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66c8dac41c9a35a9302abba21d2fca03d1484f287d2a8425daf1e0fcb808f04. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR50X2407225.
Götterdämmerung, WWV 86D, Act III: Brunnhilde's Immolation and the World is Consumed in Flood and Fire (Reworked by Joseph Swensen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc405f899709eeb914004c9e54e9acc0a5061fd5049f6ed15a5d40c8acc1ed79c. 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/FR50X2407226.
Richard Strauss: Complete Works for Voice & Piano