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 0x2271e085df34f7dde8e7e817d0c23c06763f3efc2b3518b6dad2e18c658d2603. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fb78ba5-1573-48f5-babf-28412988bb55.json and https://artists.proofprofile.net/proofs/artist/9fb78ba5-1573-48f5-babf-28412988bb55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto armonico No. 1 in G Major: IV. Allegro
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 0x667c8dca39717af825e7b349b418f633753ec8f64fc57a3e8f424989018a7c42. 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/GBBZS1414104.
Concerto armonico No. 2 in B-Flat Major: II. Da capella presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf60a0256e8e9d3b42888dca3cf6cbfdd308c2218fcbab46575bee02dad6384. 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/GBBZS1414106.
Concerto armonico No. 3 in A Major: III. Largo andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbfb197b4e36906fc88701376e43aa577761d927f939775ffcb3c3de5708834. 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/GBBZS1414111.
Concerto armonico No. 3 in A Major: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f826e26d43ef5a68e40f45c375c8036e9f92be3979b30121701102d21fe666b. 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/GBBZS1414112.
Concerto armonico No. 4 in G Major: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccd6659b84c9f775a0ce0c314f9f73fb4e926f0eb5fd07067ac21d8f5aa7e52. 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/GBBZS1414113.
Concerto armonico No. 4 in G Major: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a449bb3b456564e36a002b72f2517570a626fc563f7e9346f7696dbd3aa89a. 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/GBBZS1414116.
Concerto armonico No. 5 in F Minor: II. Da capella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d07bf1fdff049af821c65e9e9850ec1866dec452b0c65a24ab5e3bec53c2f1. 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/GBBZS1414118.
Concerto armonico No. 5 in F Minor: IV. A tempo giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd217fc4a9efcdfd4d5a77f5bb4ba31b7dc7343d74421ddeb95c33076bc5f9c4b. 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/GBBZS1414120.
Concerto armonico No. 1 in G Major: I. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02e4b0e2b67bf4aea8d09c8d98c6e245ec34f43c20e872c1c7d4b60d515b4d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBBZS1414101.
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 armonico No. 1 in G Major: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a602f075e2c1fe4e1d346a2b12081cc18d143e3bd95bca157a0dc2f26d1324. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBZS1414102.
Concerto armonico No. 1 in G Major: III. Un poco andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9167f784324c316cd615287176c5ff0cb19eb94fbe3a1adc4c96237849f9f538. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBBZS1414103.
Concerto armonico No. 2 in B-Flat Major: I. Largo andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96875745dc1edf207eb9ead67b8764817ee81d02fa2343046a333b8cded5f2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBZS1414105.
Concerto armonico No. 2 in B-Flat Major: III. Largo affettuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a2bde8ba5f29a3010785e0599f4b694ceb042c0c2fc4ce51c385c7b5fb7251. 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/GBBZS1414107.
Concerto armonico No. 2 in B-Flat Major: IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3b2cfdcb6a38efb30b527a5a5f6d0c682306dc1e0fa24ea01470509c7cb5c6. 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/GBBZS1414108.
Concerto armonico No. 3 in A Major: I. Grave sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05795bad355d106d908012b157e6fe355ea0145d5079dbe1d18f459d66009c99. 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/GBBZS1414109.
Concerto armonico No. 3 in A Major: II. Da capella: Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe6c6da914608b361d670c379a1e270e9391765945eeb26cd999d213c4d3a28. 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/GBBZS1414110.
Concerto armonico No. 4 in G Major: II. Da capella, non presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddab22ab210ca4e006c7e8e77d23f019456768ed54ec96155984d8abbd8c7a1. 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/GBBZS1414114.
Concerto armonico No. 4 in G Major: III. Largo affetuoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b490b3812c87b7bdd3f7d71480f6e2dda44b4233e3b9c94e6a96f3b2f8fc2a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBBZS1414115.
Concerto armonico No. 5 in F Minor: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a942000fea1cc82c97ff33426c167bc7684f394ed23424b7ab82350e9ab3bc. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBBZS1414117.
Concerto armonico No. 5 in F Minor: III. A tempo comodo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfd498885d26efdc38c798b8692983e3003e83f9c4923477303e01b5ff6b595. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBBZS1414119.