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 0xba8085642225369ed4feac3a484bdf1896d29f5a168b5148c7189232a7e76d9e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/155292fb-92da-4e72-810b-f382d0f52427.json and https://artists.proofprofile.net/proofs/artist/155292fb-92da-4e72-810b-f382d0f52427.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nessun Dorma (New Year's Eve countdown to 2011)
3 Duets for 2 Violins & Piano, Op. 97d: I. Prelude (Version for 2 Violins and Orchestra)
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 0xfbdb29d8246a742174ad2cff42068376ddad81246de575c1eef07dce57934852. 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/DEN962231808.
2 Canciones Mexicanas: II. Estrellita (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492325b91a372e0a7b090d92ff02ea63be52e1165c185abf23b9adb2bc120583. 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/DEN962231801.
Orfeo ed Euridice, Wq. 30: Mélodie (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01b47b0bc80e7daa3a0ed2fb9c50ed33842cf8b20ae0896bc6d78fe6bdf2689. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN962231802.
4 Romantic Pieces, Op. 75, B. 150: I. Allegro moderato (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfffeb95b1632ef6814898012307a97c29aa97a95ca55eb031c34b152b12aa0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEN962231803.
Sicilienne (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad241e5097076ad62c1081cffcaf32ffcd57b673a0d2a0540095e35f57007fcb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN962231804.
Ave Maria, D. 839 (Arr. Garrett / van der Heijden for Voice, Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ec2e36bac4ed8b757ddddc13f3090665d96aadad4c5ff74a766f69ff4f53fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN962231805.
Carnival of the Animals, R. 125: XIII. The Swan (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc360dc8e297c9c2921ca950bb1f76b6241a2af0e4d8bf471a625d1331d6bc. 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/DEN962231806.
Jeanie with the Light Brown Hair (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd2e1821395296ef41fd695a047f967b01293443d6c9142386eec9a2e3a320a. 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/DEN962231807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdb29d8246a742174ad2cff42068376ddad81246de575c1eef07dce57934852. 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/DEN962231808.
The Four Seasons: Violin Concerto in F Minor, Op. 8, No. 4, RV 297 "Winter": II. Largo (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac42fb0dcdb45f1dcc346aafa3e3e9efeb8ab2ee662e85e07218062b505159f3. 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/DEN962231809.
Kinderszenen, Op. 15: VII. Träumerei (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f618348eb987dcff7804a5a9d2321e9b8c2f9d706e4f9b6e03b2faaf594e806. 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/DEN962231810.
6 Lieder, Op. 34: II. Auf Flügeln des Gesanges (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9747dd4524811dfdab079ba7777a80808bd274f757c1b9656adbb27f5b9c1f6. 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/DEN962231811.
Hora staccato (Arr. Garrett / van der Heijden for Violin, Trumpet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257e14da9a4b85a0ab18192f202398bef3c89f8b244e0281839949880fe50dff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN962231812.
Violin Sonata in A Major, Op. 2, No. 6: IV. Largo (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf09336ab84b49c532bf7b6c6c70c0ace96083a56c21804cf14e930eb5e6338. 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/DEN962231813.
Préludes / Book 1, L. 117: VIII. La fille aux cheveux de lin (Arr. Garrett / van der Heijden for Violin, Flute and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76e1fb8d6eee72c91cb1d0d6a1bf5235b85a0c29fa52a077494bfdd3d8c0477. 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/DEN962231814.
6 Morceaux, Op. 85: III. Cavatina (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a1c781ca5203dea9b3a17eec3af0d615fb39b5a6ac1bc0650e4f91b80bb22c. 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/DEN962231815.
Danny Boy (Arr. Garrett / van der Heijden for Violin and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f0e12d5294c5c4068e567214c3480b5ed26288046a970ba180071c0017dbf. 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/DEN962231816.