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 0x5b2e1c9ce4e9e90948686596f9291641ef3dd718afcae0716ce10106bf208c62. 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/685f1598-355d-4de9-9da3-a3eeac36349a.json and https://artists.proofprofile.net/proofs/artist/685f1598-355d-4de9-9da3-a3eeac36349a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trumpet Concerto in E-Flat Major: II. Andante
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 0x1fa000a98f45fa3547d3a8011ec761d4838b046d5662ee720acf249c64514fa2. 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/DEA140639502.
Trumpet Concerto in E-Flat Major: III. Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bfdb5b7323fd7f48875f598f235d136f00e305f3bbbde2cbb3da470ee797f7. 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/DEA140639503.
Concertino for Trumpet and Orchestra in C Major: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511339dbea4acc52a45da69f3975fa814c1165c65fcf2708784c7038c9c220c6. 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/DEA140639504.
Trumpet Concerto in E-Flat Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd2095673fdc8bf9eff1f704133cde38e0a9cf6bd8230e53c75cbe82b8a5130. 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/DEA140639501.
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 No. 3 for Trumpet, Strings and B.C. in D Major: I. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d3d8b65df408c07d5a585ddc983b6437022e5536b661d76546adac28b0395e. 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/DEA140849904.
Sinfonia for 3 Trumpets, Timpani, Strings and B.C. in E-Flat Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed6541dc6b5a2735b358ed59c9e070ea631d728d26643b07d0f7a0eb49e97b4. 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/DEA140849916.
Sinfonia for 3 Trumpets, Timpani, Strings and B.C. in D Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd52d6bdd5086709bd4c2a7d165abde0d4ffbca6c3d7b87ad10fc8e19764b2f2. 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/DEA140849901.
Concerto No. 3 for Trumpet, Strings and B.C. in D Major: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faac29c31604956f2f1cdfaac358a720f56d9ec248b7312ba0aaba98255ffa9. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEA140849905.
Concerto No. 3 for Trumpet, Strings and B.C. in D Major: III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff67dee839cb889d1dc10889d18df9035d88dbf85250ab457e2884c05b47dbf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEA140849906.
Concerto No. 2 for Trumpet, Strings and B.C. in E-Flat Major: I. Allegro mà moderatamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa46cae18afaa719e5eeb6b04762fecb3aeee0a8bc0fe4e89adc1b8ce2a7af9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA140849907.
Concerto No. 2 for Trumpet, Strings and B.C. in E-Flat Major: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e88273206e1137027ec177c2ce703e933238590114812a58291d65b56ccacf. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEA140849908.
Concerto No. 2 for Trumpet, Strings and B.C. in E-Flat Major: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272aca204c51293007b498824fe21df50d4f4e7f51edaed16bf4b358c8113a82. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEA140849909.
Concerto for Trumpet, Oboe, Strings and B.C. in E-Flat Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81889141e71111a958a1750cb072c8d3a7e8483b304d0f6421e75c15b5c0ec3. 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/DEA140849910.
Concerto No. 1 for Trumpet, Strings and B.C. in E-Flat Major: III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4292e717935006bac69acc102bea85e4416d211369f8669891c29cbd57bc6df. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEA140849915.
The Soldier's Tale: Little Pieces On The Bank Of A Stream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ff2e51e7c90ed0608b61c51701522854c1cf6949fca2bd1c1ce1c607e65cd2. 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/USBC19602316.