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 0xedb0c4807288291f59d2390f72edd8a9c6997fccc38a27e208aeb5d2c6cba3f5. 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/3e43fb3a-7fb9-4510-b4e5-2301956ff7ec.json and https://artists.proofprofile.net/proofs/artist/3e43fb3a-7fb9-4510-b4e5-2301956ff7ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto en ré mineur pour deux pianos et orchestre: I. Allegro ma non troppo
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 0x4ec4e1011b4fb065d647ddc9d5d5518a0fff7a02b65e3b223d54dfeb74da1675. 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/NOEHX1904040.
Lasse Thoresen: Adventuring the Intangible
A Desperate Light: Orchestral Works by Gisle Kverndokk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a241b13b68abe56b26dbfe2b6b5d0bb341399fd408e42f5c217f20ae3e2cb6. 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/NOLFA1163010.
Concerto for Cello and Wind Orchestra: I. Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff1a9382b82e792953ce046edd8b9ff9afccbe577f2c761cb8d61a4455f8661. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOLFA1163020.
Concerto for Cello and Wind Orchestra: III. Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80378fb3f1d94a9c8c2d31db05ff1b22dbeb17384739d4ea57a197667f650e19. 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/NOLFA1163090.
The Phantom of Light – A Miniature Concerto for Cello and 2 Woodwind Quintets: I. Prologue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbb29f55d5eac7744fbc329f3981c7b8e4371bade9bda763144ad9e8e096f9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOLFA1163100.
The Phantom of Light – A Miniature Concerto for Cello and 2 Woodwind Quintets: II. Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d91bb29c7db637767783bada21caca479cb0dab7ff93c76fd62f6ab28c329c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOLFA1163110.
The Phantom of Light – A Miniature Concerto for Cello and 2 Woodwind Quintets: III. Movement
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a634f4541be93b443ae5c1690ac7c22ca07b7e3482cf7ae67b9626f58ae2953. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOLFA1163120.
Concerto for Cello and Wind Orchestra: III. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebfb4a7912ecaf6b5689cf7e73e8e0a680fcf2672721eb319559bd260547ab6. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NOLFA1163050.
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
Concerto for Cello and Wind Orchestra: I. Pastorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b334f9cee25337c82793adb6910423d23fdb31cd13d35e302943a475241cf31. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/NOLFA1163070.
Symphonic Suite from "Around the World in 80 Days": VII. Finale, Phileas Foggs victorious return to London
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac21a0c693550a3a8aba5900eb1a8e6e3ce95b9070970f2875e868b228ebb70a. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NOCJB2500302.