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 0x3c53fa7d78cfae01544e3175b829ab99f93f50d3d81933d78119064552212ed6. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6981e27e-93ef-4cc3-82e2-fd0e81bc4468.json and https://artists.proofprofile.net/proofs/artist/6981e27e-93ef-4cc3-82e2-fd0e81bc4468.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oboe Concerto in D Minor S.Z799: 2. Adagio
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 0x5c3d5c0960394646ea182996d24ec08bfda0e2df205ba9dc917e0eafa21194dd. 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/NLA507200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d5c0960394646ea182996d24ec08bfda0e2df205ba9dc917e0eafa21194dd. 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/NLA507200029.
Concerto in G minor, R.576 - "Per S.A.R. di Sassonia" - Revised by Franz Giegling: 2. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cae10a5019a37c14a98e8ad8a5cb073f482a50d05c198b571460504035eef1. 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/NLA507000201.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4b. Allegro assai - Live - Remastered 2019
Members Of The London Symphony Orchestra
Ode an die Freiheit – 30 Jahre Mauerfall – Bernstein in Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf35cd7b23cb04a145408b723a7face9d29575f136da4e2803e2e2cb04c58d63. 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/DEN961902296.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4d. Alla marcia - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ff3c6c636f027d3a43f23b2d7980e7204f9143bf25fa1e6e7c628a58dc3ac2. 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/DEN961902297.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4e. Allegro assai: "Freude, schöner Götterfunken" - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee435af5d6ae5b1f48b7a1bd89e208d0fbc2509a6540a43861b901d677ebf4. 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/DEN961902298.
Concerto in G minor, R.577 - "per l'Orchestra di Dresda" - Revised by Franz Giegling: 2. Largo non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c3b56ab34ed6d1c4b9c4ec5068113707a68d4a42bce7c8a70602f13cee701. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/NLA507000198.
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
Symphony No. 9 in D Minor, Op. 125 "Choral": 1. Allegro ma non troppo, un poco maestoso - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aa5684a4bcaa3192aea2337c77c4c146ccc15c86be7896c354d28c2d966970. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEN961902291.
Symphony No. 9 in D Minor, Op. 125 "Choral": 2. Molto vivace - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aed2ae37ea80a3a55e816df0bd6d2e8e630f36d0e5e6ab6c2a5ea447c31b57. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEN961902292.
Symphony No. 9 in D Minor, Op. 125 "Choral": 3. Adagio molto e cantabile - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75f4c0dc06c8fe0986f1af435972553f838f48e4b62e6390d827b8d537bd02. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEN961902293.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4a. Presto (I) - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddce9dd24a411637a41b0c020501334c500ccd2c224faf8d364da31085a7acc. 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/DEN961902295.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4c. Presto (II) - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4293ea5dc66752a477995d1bab75a387054eefb5c4b4c82f38879405a4f00e8b. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN961902331.
Symphony No. 9 in D Minor, Op. 125 "Choral": 4f. Allegro energico - Live - Remastered 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4965753e6eb1001e0daa0fe0b8119627fd6605fc25beb29bbc9eeb76f5f74a8a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEN961902299.