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 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 0x993512f918a29ff9c042074455aea51435734eef1e9f51eebfe30056ff4cecd0. 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/054d7937-578d-4782-a4f9-3c6966264e5a.json and https://artists.proofprofile.net/proofs/artist/054d7937-578d-4782-a4f9-3c6966264e5a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
PACHELBEL'S CANON IN D, P.37 (Instrumental)
Happy Tunes for Happy Kids: A Tato Kids Collection, Vol. 1
Classical Beginnings: Timeless Melodies Reimagined for Children, Vol. 2
"Morning Mood" Peer Gynt Suite No. 1, Op. 46 (Reimagined for Children)
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 0x739b332d8fc75e61b2bb043cd8089c19dd7db1efbc5584bbd00c650b588b7175. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430042 — a six-check JSON result.
“The Nutcracker” Suite, Op. 71a (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a16273390fe8b3164f69a499c420a8227e6b2fb608e02ff6ef513cda0f7c4ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430041 — a six-check JSON result.
"The Blue Danube Waltz" (Main Theme) An der schönen blauen Donau , op. 314 (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbd0311ad6806ba3c121721bfc27ccef546c979c432835741da37568008975. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430037 — a six-check JSON result.
"Für Elise" (Main Theme) - Bagatelle No. 25 in a Minor ,Woo 59, Bia 515 (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b59f080cfcf26009a479b2d3bdc0f3c4b64624a0df6672c7655e20a979a568c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430040 — a six-check JSON result.
“the Barber of Seville” - Figaro Aria (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b0e187f6596edbb049321c08c9708c3098ac91b37dc0215b2d7eb4031c869b. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430043 — a six-check JSON result.
“A little serenade” Eine kleine Nachtmusik - 1st Movement , Allegro (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1c2b4823801cbb9f059fe4ad73eaf6b6a25afe9dded69fc630f92d1d975ff5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430035 — a six-check JSON result.
“Nabucco” - Và pensiero (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1852edd77f0ee6b5e5544d63713eb11a0993ff927acd34785036c66fb6899580. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430044 — a six-check JSON result.
“GUILLAUME TELL” - Ouverture (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51fd79a5cad0c5b508fd977c0769235849b2196f014486e39e2eefc00cde84. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430038 — a six-check JSON result.
"The Blue Danube Waltz" An der schönen blauen Donau , Op. 314 (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f12eeec495059e419dd1229d7504e1646dfff0cd585dacccf8903c4af58f6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430036 — a six-check JSON result.
"Für Elise" Bagatelle No. 25 in A minor ,WoO 59, Bia 515 (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eac4490f00523cf2478941e49cad00b9343061da6e24cd8906f36ac5f7dc91. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430039 — a six-check JSON result.
AVE MARIA, OP.52 NO.6, D.839 (REIMAGINED FOR CHILDREN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0012701c547eeb6319c800d21dc47dee6537478b96da146f8451a6500d6a64. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12407396 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe565326d9af92cf448a3cc663eccb079c97b813c17950a7d2e7e0766df4461e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12413669 — a six-check JSON result.
Classical Beginnings: Timeless Melodies Reimagined for Children, Vol. 1
Minuet in G Major, Woo 10, No. 2 (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1877b060daf9bf2392f7de5098c0d8261223e9813d580732b3d2b0a7fba1ff23. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12413236 — a six-check JSON result.
Sonata No. 8 in C Minor, Op. 13: Pathétique (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a93af286726352e51654b7eb0bd083ff5c83687a4348204282fc612ab2362. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12413238 — a six-check JSON result.
Suite Bergamasque, L. 75: III: Clair De Lune (Reimagined for Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c778ee8c321aba458af645c144b8d14ead633224610b9de78f54020d38e094. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12413240 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6195fd4d41150013e858db97956569bae4194a3181c91677c6a0996dcc7a9fa9. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12421584 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51fd79a5cad0c5b508fd977c0769235849b2196f014486e39e2eefc00cde84. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12430038 — a six-check JSON result.
4 Comptines Françaises pour petits et tout-petits