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 0xc7f5d1fb92674d050a5715e97edab0967d02897926d389b24783f54fac16c01c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c224fa3-573d-4d7c-bfc1-91cbc80dec3c.json and https://artists.proofprofile.net/proofs/artist/3c224fa3-573d-4d7c-bfc1-91cbc80dec3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Duet Concertino for Clarinet and Bassoon, TrV 293: I. Allegro moderato
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 0x0803fe1e1d41d8621932463e9d22cfedb62b03cc278eaccacf6b3664cfb950db. 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/GBLLH2065401.
Prokofiev: Peter and the Wolf - Saint-Saëns: Carnival of the Animals
R. Strauss - Orchesterlieder/Metamorphisen/Oboe Concerto/Violin Sonata
Saint-Saëns: Carnival of the Animals - Prokofiev: Peter and the Wolf
Saint-Saëns: Le carnaval des animaux, R 125: I. (b) Marche royale du lion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49a611784bb833a61ace4c6f271fff7dd977074b8a57ca8a9da2a6ccff24136. 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/GBAYC8800980.
Saint-Saëns: Le carnaval des animaux, R 125: IV. Tortues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8135e06451e9244a7160a869dca1017199e6509ec5455a379c276eaaaa5d21ce. 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/GBAYC8800983.
Saint-Saëns: Le carnaval des animaux, R 125: V. L'éléphant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434ab3d7b389225b11305a110d7762d8010a1aa0a0a84b65a3f006398b10543. 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/GBAYC8800984.
Saint-Saëns: Le carnaval des animaux, R 125: VI. Kangourous
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b8552466a8509fcffe5984d9724f84dedcb55681de803617551e338421fe1. 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/GBAYC8800985.
Saint-Saëns: Le carnaval des animaux, R 125: VII. Aquarium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5c9ff0d92926148a7597e200adac64a8499f8bf12e02db04cc09c097d27f7. 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/GBAYC8800986.
Saint-Saëns: Le carnaval des animaux, R 125: VIII. Personnages à longues oreilles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708b0495463c87c23b0e9113e08e17d08631d689c64f2ee6d3e6ff924c5132ed. 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/GBAYC8800987.
Saint-Saëns: Le carnaval des animaux, R 125: XIII. Le cygne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a42f26866c253a655e06cec56f4c161bcc824611a2f4f8d6000858e80f347. 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/GBAYC8800992.
Saint-Saëns: Le carnaval des animaux, R 125: IX. Le coucou au fond des bois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698c303f5a7c030ec5e26f37c2228a12c2d5a50c591ae9f26a33e9129e9bd982. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBAYC8800988.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79f84eb2ed2266e6c4a500f0a774e5d3567bfef5af9cc06de074c60fb5a512. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBAYC8800671.
Saint-Saëns: Le carnaval des animaux, R 125: I. (a) Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f70e09755de438205bd7774487a2cb5cb3f942c7c478d6906cdf5fed3d106. 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/GBAYC8800979.
Saint-Saëns: Le carnaval des animaux, R 125: II. Poules et coqs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d22f23b8efb004adb92479b42f32b6092b9586cfc87591c9813e9b141080336. 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/GBAYC8800981.
Saint-Saëns: Le carnaval des animaux, R 125: III. Hémiones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf433876fbacab070452df0f4000e5caf1769775f249b9b646066a0d157c7f537. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBAYC8800982.
Saint-Saëns: Le carnaval des animaux, R 125: X. Volière
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd583a877e62fc9c78082ac06483b9111e21e40f52bf179af104a51c56361ec6a. 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/GBAYC8800989.
Saint-Saëns: Le carnaval des animaux, R 125: XI. Pianistes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff86b1d2f6a30b45c63b606fc46bfeeb627c08ec3e9a4bf93778a96e1b634e5. 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/GBAYC8800990.
Saint-Saëns: Le carnaval des animaux, R 125: XII. Fossiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc38a21f87c22a66f282a4d05eccb58808bb43746cd6534e45d65a8cd57e5a1b. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/GBAYC8800991.
Saint-Saëns: Le carnaval des animaux, R 125: XIV. Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9efbf8c2a4990039656d74180946caaadd3a0b6c5614a22e9a49fdafcfaada1. 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/GBAYC8800993.
Duet Concertino for Clarinet and Bassoon, TrV 293: III. Allegro ma non troppo
Pierre et le loup, Op. 67: theme de Pierre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fd5a9b14d8d1e6ffb5cba26118b3594d7778402e5e46fd7278f1bf6b4a25bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC0802430.
Concerto for Oboe and Strings in D minor (arr. Lauschmann): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf478e659116b852a8a71b50a6f2f79c9ec6bf3e8900b97f99aa8204c68f81c. 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/GBAYC8804544.