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 0x31fc3a813ecb937f73f77bf4f82fe442a602fb569064910bf6a0c89939e44c2e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba38afa1-6a92-47dc-ac02-c59003a49730.json and https://artists.proofprofile.net/proofs/artist/ba38afa1-6a92-47dc-ac02-c59003a49730.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Telemann: Per la tromba & Il corno da caccia
J.M. Molter: Concertos for Trumpets & Horns
Ouverture-suite in D Major, TWV 55:D7: VII. Rigaudon
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 0x3f6be67bda3e5d20388576952a20eaebe8567d7bfda110388c5a85ba7a090f65. 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/DECP61515003.
Ouverture-suite in D Major, TWV 55:D7: V. Trezza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a841dcef25e7261b116f7bf44c92cd37bec7fa0c6799cd8fb3d2dda8501e12. 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/DECP61515007.
Horn Concerto in D Major, TWV 51:D8: I. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7f2019d97632f2041f42f7cca873d666a2b71ab3d556f39d49b30952a3c93. 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/DECP61515009.
Horn Concerto in D Major, TWV 51:D8: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d9984056269c7b541ca31bc08309b3d0b3d18da3e65339b22afdfef063ea8a. 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/DECP61515011.
Concerto for 2 Horns in D Major, TWV 52:D1: I. Largo - II. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b71a5147285ba1ff04e2f49880ffe6549023fc85fb631f6c4fc9854f9a4aea4. 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/DECP61515015.
Concerto for 2 Horns in D Major, TWV 52:D1: III. Affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992dede5d18767cb41d8978b204c9ada94b1906142e08f826a5989ece02ec271. 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/DECP61515016.
Trumpet Concerto in D Major, TWV 51:D7: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de154fbe7b9344b004472cb2b7aace11a40fe7b4191794416147c026eb0f01. 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/DECP61515019.
Trumpet Concerto in D Major, TWV 51:D7: III. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4973bb5a66de788b10ae426a2667150f09eda32939f44973fd3202d691d8b. 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/DECP61515020.
Ouverture-suite in D Major, TWV 55:D7: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26118d74ad967e29b364e2656c973892e60a63a3a91538ca23adb12b33e146cd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DECP61515001.
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
Ouverture-suite in D Major, TWV 55:D7: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625729d777736d19a81b9faa48a80185c76fb3e15b30c272597752c9205fc15d. 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/DECP61515002.
Ouverture-suite in D Major, TWV 55:D7: IV. Furies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf330ee2858e2bda79ac7d80eaa1ca115a23cf50a251a9f2b9e75500fe404628b. 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/DECP61515005.
Ouverture-suite in D Major, TWV 55:D7: VIII. Loure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53dc3eb4164ac50e9d8fbff073293905b1a32f1c21fff3a693461b8a11827a1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DECP61515006.
Ouverture-suite in D Major, TWV 55:D7: VI. Menuets I & II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefef45e7bfb8060667692d9292acea8c6cb3715766951b552cf4f5db6394531f. 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/DECP61515008.
Sinfonia in D Major, TWV 44:1: I. Sinfonia. Spirituoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ee661b58f74ba1d742c7782842b91a2f72159e119f2c8c896aef142ba8574f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DECP61515012.
Sinfonia in D Major, TWV 44:1: III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076219a48975bee735e2c0db79a788e1eec11b83b06841c7d83ebfb8e3663bbc. 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/DECP61515014.
Trumpet Concerto in D Major, TWV 51:D7: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29a7973f0ae8d064860af83427bb1a07d190e78f7849dc61ae8745249072e4a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DECP61515018.
Trumpet Concerto in D Major, TWV 51:D7: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f47c48d2394ba289d4106fc798210c2c2b5d1b795e9d5a67443d3dd5398f7e. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DECP61515021.
Purcell's Trumpets : From Shore to Shore...
Purcell, Morley & Tomkins: English Royal Funeral Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca9bf7d93c56950da81fc9e48d0a1abd03ac6895be5abbff25d9df743a7b2e. 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/BER181233201.
The Queen's Farewell – The Queen's Farewell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7a85596ca0dfdae51d6c17b12fdcefa2cf1a32f2ec1d9629000c94f1ad4fd5. 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/BER181233202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed209e0c7cac93aabe070196b5ea5fafda07d83b8b877944de84f121ca87f1d. 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/BER181233203.
The First Dirge Anthem: I Am the Resurrection and the Life – I Know That My Redeemer Liveth – We Brought Nothing Into This World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec13868ca7365a29914c04d0ff3849c31ad56e5c259dc4b69ba62d769e77e46. 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/BER181233204.
The Second Dirge Anthem: Man That Is Born of a Woman – In the Midst of Life – Thou Knowest, Lord, Z. 58b
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb7c043ba428a917698310e7e38f13def44fa427d3696e8673fe6d425b03730. 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/BER181233205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b1c7bba4d6dbf434b8e0d3b04f5afca69e85866e66517ff1bea2c1ff382443. 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/BER181233206.
The Third Dirge Anthem: I Heard a Voice from Heaven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3d5f1128f67fdc20cc5d228e57faa9ea4e68740c0e71fd4b26ad7e716826d5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BER181233207.
Lament and Elegy: Death Hath Deprived Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285e553c835e6d8cd332f20785acfd6f4ec909a065f3f4295e04bee3740aaa1b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BER181233208.
Burial Sentences: I Am the Resurrection and the Life – I Know That My Redeemer Liveth – We Brought Nothing Into This World – I Heard a Voice from Heaven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912da98f57c82f995ef147cb65648096f310af449ec30ca92debbcc35c0ce43b. 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/BER181233210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8575f958c21f9dbe9b7ec504ea94a559a2a330a1ba4c371d2ac4daa3aff56687. 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/BER181233211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1402d22e9431eed1a333b8eb5b4a0fa19b471d3529c1660c3552b835cb57c0. 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/BER181233213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f470d3b15dbaa3f9ac18bcde8fbc9d6e86044454b2197f61935405f317ddaf6. 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/FROV61820918.
Per l'Orchestra di Dresda, Vol.1 Ouverture
Il serpente di bronzo, ZWV 61: Potrei sovra degli empi (Dio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b83b3a643889afe5b54619e0348c05c22d486f4fa62fc9595994c3c1defb14. 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/FROV62125802.
Sonate A-Moll, TWV 41:a3: II. Spirituoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947fb8ff87fb6787e55228c73d45841967af3cdad77227ee7af8b029baf49dd. 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/BER181637518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1c0732a554c0f02f0e2b93fc806b3676d803d3dc24c53f3c2f11b4559917e0. 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/BER181637519.
Baroque Instrumental Music for Christmas