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 0x9bc977c32b0c8190722920b6c6a545ac276ec7308c794cc6b87b02e3b7f024a2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48084f68-551b-4ad9-aaf2-1b00ec316069.json and https://artists.proofprofile.net/proofs/artist/48084f68-551b-4ad9-aaf2-1b00ec316069.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Happy Holidays: Christmas with Tchaikovsky
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 0x65efefb1e943717a98bd717d72e1d80a2d5152ba805558fcc27a1607bac98c7b. 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/FR0W61328613.
Casse-Noisette: Valse des fleurs, Op. 71
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efe31a1312454e8d800081b31a8188289d096011d4b2534c861dafebe203236. 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/FR0W61328615.
Valse No. 5 en la bémol majeur "Grande Valse", Op.42
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959a8f750b643506216de4f34c3ac50552a4c1e26575095e35608f2a6cd3e9b5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR0W61328617.
Best Mixtape Ever: Relaxing Music for Pregnancy
Swan Lake, Op. 20, Act II: 14. Scène. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0031f8b449f31613a6b3c2945626fd95228ea094e54b47cf4ae0cbb2767c0f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEBL61004690.
Swan Lake, Op. 20, Act I: Introduction: Moderato assai — Allegro non troppo — Tempo I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db0a14053ac2d9605ee0f02bf4a46c685c757cd9360ba0f8e1464c981252f0e. 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/DEBL61004675.
Requiem Mass in D Minor, K. 626: VII. Lacrimosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db62b2446856161bdec3c8f72dbf3e7fa3af6dd14602cc97f48fbdb41aaeb95. 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/DEBL61004926.
Requiem Mass in D Minor, K. 626: I. Requiem aeternam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad7d48981a5c44277d51a7963d00e156a4993c258dd2f6e9c462436ffdac513. 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/DEBL61004920.
Requiem Mass in D Minor, K. 626: II. Dies irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f1f6e74c9f847c03ed4eb74231c72ffe39aba59ae69860d75c1c88e1c6b23. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEBL61004921.
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 Mass in D Minor, K. 626: VI. Confutatis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c8220973449f8815827ca3e3eedf4ddc5fe933eb636faddfc266aaadbbb3b. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEBL61004925.
Giya Kancheli: Symphonies No. 6 & No. 7 „Epilogue“
Tchaikovsky: Symphony No. 5 - Marche Slave
Stravinsky: The Firebird - Debussy: Nocturnes
Ravel: Boléro - La Valse - Pavane - Rapsodie Espagnole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016283ce80de4f6542448543e1ea59445c9bdf3a74bc9d6eff74c2dcac60f98e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEKB72073370.
Debussy: La Mer - Prélude A L’Apres-Midi D’un Faune
Giya Kancheli - Light Sorrows & Mourned by the Wind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1990d8da19c11072edf4fa1d393fc8d01079bcaec3fd1eb332e752bcbb3e91a4. 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/FRX281915518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a905ebc13ec8734db7c954f3384046df1283865b4a89c832d3ae0eff22c3412. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRX281915519.
Giya Kancheli - Symphonies No. 3, No. 4 & No. 5
Christmas Song for Mixed Choir a Cappella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fee615adb882eb8bc406cdbe0690349337b61bb055b8a272ffad77611bbd7d. 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/DEB791842912.
Kakhidze: Christmas Trilogy & Moon Dances
Berlioz: Symphonie fantastique - Rimsky-Korsakov: Spanish Capriccio
Tchaikovsky: Symphony No. 5 & Marche slave
Adagio for Strings (arr. from Quartet for Strings, Op. 11)
Classical Choice: Famous Overtures and Adagios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73d08dc4343b2db8648ffb4a11a15d6c6193c536b7ad6e43bd7336ef8c63dfe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEKB72072241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea59f49a30b1e103565a1fc4e6056ea4e176d45408172105098b0c7b599d46. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEKB72072249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f6d8b95d7c9e4a74035aaed88d5baae90099573ee116b2ce359cf23cf4d0c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEKB72413626.
The Nutcracker, Op. 71, Act II, Scene 3: No. 14 Pas de Deux (The Prince and the Sugar-Plum Fairy), Variation 2 (Dance of the Sugar-Plum Fairy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf41af87d88a7ee2eb6750db7dbb26f3a3f2ee8543ffba40e0d4176839bf934a. 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/DEKB72413635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4736aa9fe76af51bde39f099f44b55a329e77c870c8ca199ec99dda8e4addbaa. 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/DEKB72413642.
The Planets, Op. 32: V. Saturn, the Bringer of Old Age
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44566055b576c62add6950e078b45b7b059f50906a18a6938b9c48790338a108. 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/DEKB72413646.
Romeo and Juliet, TH 42: Overture-Fantasy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6571f81ed621aa4856377ff6872fe29047bfcd0042a87d631929d5e35cc4ca. 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/DEKB72413652.
Symphony No. 9 in D Minor, Op. 125: III. Adagio molto e cantabile (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d03322ad79a028efa631342b03d041c5eddd57dfef70a8453e08613bdd2f6de. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DEKB72072248.
Piano Concerto in A Minor, Op. 16: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a96aa63431e91ed05e5fb301c9a4e9169a83c40747e4cf62e9ac9f1584bdc1. 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/DEKB72072255.
Symphony No. 3, Op. 56: III. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939e5ad63bd817450e2f03cd96955c9bea0610edb2f6e6d199afc4f912649548. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEKB72072264.
The Barber of Seville: Overture (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1433b96abd4363e3a623827010c458315b5c678c6e97eb6b1a353791ccc6d40. 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/DEKB72413627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b8400c424a3c6fd0b11e27e400280d14ae56399ae602f5146e2417bf135cd9. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEKB72413631.
Symphony No. 6 in B Minor, Op. 74 "Pathétique": IV. Finale. Adagio lamentoso - Andante (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3420af6bea066f82b00a765f9b1cb6fb30f9c98cbec39c1a46e5b17544106250. 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/DEKB72072238.
Il barbiere di Siviglia (The Barber of Seville), Act 1: "Una voce poco fa" (Rosina's Cavatina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3e5e7b2917a356e2910439b8c29f11191702ff2ab51f0e0c2f61cd4f177530. 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/DEB790300753.
Herio Bichebo From Earth, This Is Your Son
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757f6fb158c535393366bacbfecdc619822dfa8335d18bc2cb78d00f42093fba. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEB331018820.
Symphony No. 2 in D Major, Op. 36: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f58e931b586c30e624532243450933709f296018885276c28086f3d4fd6d65. 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/DEB790302600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec5883ee1b0216732fdf8caaee9d59a4df722b4fbea44583027ebca5cea9a30. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEKB72413639.
Symphony No. 7 in A Major, Op. 92: II. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3418c4236901e15de76af86250a4b5eb01cf45e7f2b9bab3d3c30db72dbb90ef. 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/DEKB72413641.
Symphony No. 3 in E-Flat Major, Op. 55 "Eroica": II. Marcia Funebre. Adagio Assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca14cf73c2b39c050df5516ea5684a323e1c42ffa01a17e43c816bb0e414e476. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEKB72413650.