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 0xcd01c0666344e715357266c135a9aa016c0f8a7aee154514988863e27a9c3d5d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97fcf02b-e7ab-4e2a-bb83-f781de190945.json and https://artists.proofprofile.net/proofs/artist/97fcf02b-e7ab-4e2a-bb83-f781de190945.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Adriatic Voyage: Seventeenth-Century Music from Venice to Dalmatia
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 0xee5649f5d31a5ae302c4ecdc0ffa29831f43bf4c6256db0b006e2d50c2a33b35. 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/GBEBL2126001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c70f6e35c27048e4c9dd697440870767c92f471cbd177665179d73e793c91da. 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/GBEBL2126003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245439a0841a20561c7e58a4bcf1ed704f2b596e0ec8657e87dcbdadfb25aa23. 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/GBEBL2126006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d7e4e39b1608edd18046a8108f44aae0b9fa52dc38b86a2fdcaa418d94b236. 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/GBEBL2126008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc833b2e1403b19955c78a7f7abcfac23ca0c1141fa3558272e9030a89615fcb5. 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/GBEBL2126009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daa990f7884e3cf9631b96a0bf0fe11620d92ee2a61b0e439fdee204dbe9cef. 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/GBEBL2126010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c689c9f2f82266d2dfb6a46963a11b5120a87abc1cfa4c535af8814143fb29. 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/GBEBL2126016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882910f996d1997d2664362e0b72f58ac9e08748bf9b5e94b92827fd233d7e08. 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/GBEBL2126002.
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 0x6d5534f0776128eb6aa84d8c00709d681848e0b082db8b411a9f935c4664378b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBEBL2126004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8cbd6c0a9d46ac6f4e5d5ba09713522fdb663ff2a7c0850ff564ac239ff774. 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/GBEBL2126005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae41f85b9d83d685a0a72b84380dc4eed4a9a2dbb974ec6ccc4315e7ba5d929. 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/GBEBL2126007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9fdfa8123d94bc193322b750d4888eb10416e8e504014ef8f022a8d318a241. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBEBL2126011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84adf64d9139eeb61e5b32eca48e497014c7f5248d228607e103863d8c0637b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBEBL2126012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41976692506f2a37023813a96394d7f107651c03f0caf6733c2099261f7ad28b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBEBL2126015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a6a9372a30766a555c67ddec39a11f3b5eb887bc4866ecf062c28fc345a20. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBEBL2126018.
Mass In B Minor BWV 232: XV. Et in unum Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0d18fd3a7551ebf1bce978ca3f9245ca187aa8a4d01cdd08a5399424c3f59. 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/UK4WW1520008.
Cantata “Ich habe genug”, BWV 82: I. Ich habe genug, ich habe den Heiland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc388c9cc6accc6adc0a932e270419b0db32c823c2b9f696e2a1f97480ee4324. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UK4WW1520001.
Johann Jakob Walther: Scherzi da violino solo
Scherzi da Violino Solo, No. 1: Suite in A Major: III Sarabanda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6616a160f13aa5fc109eb8d8bb68795ac9b255cb83d3c8a9e7c4a443f99de81. 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/GBEBL2129403.
Scherzi da Violino Solo, No. 2: Sonata in C Major: IV. Allegro I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abde2443a24b351f0b4d87f4b63889808a3c9843b6abb717a2db22957f1c69f. 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/GBEBL2129408.
Pyrotechnia: Fire & Fury from 18th Century Italy
Giovanni Stefano Carbonelli: Sonate da Camera Nos 7-12
Giovanni Stefano Carbonelli: Sonate da Camera, Nos 1–6
Oster-Oratorium, BWV 249: IX. Aria, Saget, saget mir geschwinde
Weihnachtsoratorium, BWV 248: XIX. Aria, Schlafe, mein Liebster, genieße der Ruh
Scherzi da Violino Solo, No. 1: Suite in A Major: I. Allemanda
Scherzi da Violino Solo, No. 3: Sonata in D Major: II. Adagio – Presto – Adagio
Scherzi da Violino Solo, No. 1: Suite in A Major: III. Sarabanda
Rinaldo, HWV 7: Venti, turbini, prestate
La Notte: Concertos & Pastorales for Christmas Night
Sonata No. 10 ‘Pastorella’ for 3 Violins and Basso Continuo: I. Vivace
Minoritenkonvent Wien, MS XIV.726, No. 87: Sonate ‘Wie schön leuchtet die Morgenstern’: I. Contrapunct sopra la Baßigaylos d’Altr.
Concerto for violin and strings, RV 104 in G Minor ‘La notte’: V. Allegro
Concerto for Violin and Strings, RV 104 in G Minor ‘La notte’: I. Largo