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 0xbe68b376c65920b86541259b74b673363a284edae0121791241651450d91307f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d4cf570-c678-4810-b444-e6952a47b505.json and https://artists.proofprofile.net/proofs/artist/6d4cf570-c678-4810-b444-e6952a47b505.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x7abf313624e4a13de1af3333790a1e0d79939475d8db2d6ed677aaa71dbe7735. 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/NLP711700068.
Symphony No. 3 in D Minor / Pt. 5: 5. Lustig im Tempo und keck im Ausdruck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16db54f5bbb1cfc3eb075c2dcd921565b041d21e6c3afa45f1100cf34d8fc609. 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/GBBBA0301095.
Symphony No. 3 in D Minor / Pt. 6: 6. Langsam. Ruhevoll. Empfunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2603af74c9f98ba97de2abee3cb32b04d73f4fb29343bfa661b1d62df5ffdba6. 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/GBBBA0301096.
Suite aus den Orchesterwerken von J.S.Bach: Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce948147ee5785d5034d183546a00bbddf78b9e48ab76bcf333d9f813c8729. 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/GBBBA0000213.
Night and Dawn (Nacht en Dageraad): Dawn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a99b7513140af2ee9c0a800a8695f44513b264495300b14239569ab0230785e. 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/US29K1023349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20584e20666b044f864bfaef0f609508146ae11fb6357fa4979c44b824fa20cd. 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/NOCJB2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2603af74c9f98ba97de2abee3cb32b04d73f4fb29343bfa661b1d62df5ffdba6. 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/GBBBA0301096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf568cb6c3d4f5ea98fd039e5f7493e8566d4ec298d5f6e6ed3495b442267e73. 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/GBF079710581.
Symphony No. 6 In A Minor: 4. Finale (Allegro moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d9b67ef2fd5232853dc6b0cf5bd1e4e5d036de5ef698d97189f7e3f6604c2e. 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/GBF078910444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64365070ca589a297d541b4b4f03e13a8ac8e65f63e535812926b28fdc3c84d8. 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/GBF079410353.
Symphony No. 1 in D: 3. Feierlich und gemessen, ohne zu schleppen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15766324fa33494ca8883dcfcd331ac028b203341532d2fd3a3b81c5039776. 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/GBF079511013.
Symphony No. 1 in D: 4. Stürmisch bewegt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9833c3a6a9800d4396a261bfc458bc5fb365a99e6043ba4f0d0625fe1ee4e. 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/GBF079511014.
Symphony No. 3 in D Minor / Pt. 4: 4. Sehr langsam. Misterioso. "O Mensch! Gib acht!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e4545ae292b06ee916dd91b33aaea85f2173e37d44dcc27566efb4a6b3c4d9. 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/GBBBA0301094.
Symphony No. 5: IV. Adagietto. Sehr langsam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c474231471c6037915f4ed406f081f1095da175bfe0189d87f0e4896d47ca2b. 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/GBF079710584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16db54f5bbb1cfc3eb075c2dcd921565b041d21e6c3afa45f1100cf34d8fc609. 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/GBBBA0301095.
Symphony No. 5: V. Rondo-Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afeb849e02ae4ea5134b9b8c045581755724197ce32c40ab58459ba681a6f2c. 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/GBF079710585.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Imple superna gratia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888acfce9b082decbdf83b52495e45a595db29c8a535330c3a5d0ccf985bf778. 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/GBBBB0100002.
Symphony No. 8 in E flat - "Symphony of a Thousand" - Part One: Hymnus "Veni creator spiritus": "Accende lumen sensibus"
Jongens en meisjes van het Kathedrale Koor St.Bavo, Haarlem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9dda3670b6298b5edb176747e95725220637f2c5952da6b0d4ddc865d01626. 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/GBBBB0100004.
30th Besson Swiss Open Contest: Highlights 2019 (Live from World Band Festival Lucerne, Switzerland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42743bac2b577815b3d3be88ca30674d12c7ca82122d1d98946921ae15e194f. 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/CH6541972164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc3a575ba471ed67490e903dfbfdd199594cad69dad160fe081f2d49b9b3eb. 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/CH6541972172.
JBBFO Jugend Brass Band Forum Ostschweiz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351e1f2a5b3ae4938d396c093027987717ded57975263414ad444eeab16993d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/CH6541784596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dd52a1946d43c63f2fd71df539a374d691e380e6aba4608fb5747d6b0600ae. 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/CH6541784595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c44500de1a049c1dc9859861d999ae50ddbe918c47fc6a299810e6a1bc57de. 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/NOCJB2500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e846b9b8cff5635801b278073ed25f273c86decef4d19591a84608eab1d1bef. 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/NOCJB2500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761a0319c1b1f653eda227fa8d69734b3f99a4a53b864be278bcba3c05d6b8b0. 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/NOCJB2500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744fc1012355c9245c493d415ac83a9408edd9632030cca94633f922a25c1097. 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/NOCJB2500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a020e712cb542ecd657bc2d4f4ef55bdc70d696b6d723387617e7b686bc76. 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/NOCJB2500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c108e117616f0a8ce35c38c8fbccb778a243bad5e9beaddcaeb6f3afe0ce33. 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/NOCJB2500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e5cc529efd7a40900eb663600c68d545d532c405db0344e59785eebc452f6a. 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/NOCJB2500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57961bf1aa1efa6ab75af39ba3a7164d8eb7af03fe8466670c9e3ca36b595afe. 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/NOCJB2500317.
Mozart, Brahms & Others: Orchestral Works (Live)
Celebration (Live in Bozar Brussels and Tivoli Vredenburg Utrecht 2019)
Time For Outrage: Rock the Culprits - Live
Symphonic Wind Orchestra Harmonie St. Michaël Thorn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f0074d002c642aded4e0c9a378fcb2e1b2f8d7e3bd241c18e4b2c7de7f04ae. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLC351921006.
Arnold & Britten: Works for Violin & Orchestra (Live)
Reverse: World Music Contest Kerkrade 2017 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04104e4f52f4f88cf84872ee73b88c33f674a2ac0572082546e0df83e4952d1a. 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/USHM22337154.
CELLO HEROICS IV — Dohnanyi Cello Concerto (Konzertstück) Op.12
Gabrieli, Giovanni: Canzon in echo duodecimi toni a 10, Ch. 180 (Live)
Brass of the Royal Concertgebouw Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25e712a1e7c965cdbd5b47918ab6ce228e14387fb2ab02dfae24f579c96515f. 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/NLG760720206.
2017 WASBE International Biennial Conference: Brass Band Schoonhoven (Live)
Winkler, D.: Piano Concerto / Elements Concerti
In Flanders' Fields, Vol. 51: Jef van Hoof