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 0x3196bcd6d967a5a16abc11fb5ba6d079a47fadbafc9687209ae8bc6e9c7cb34d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae334dc6-974c-40ff-b7ca-273f0186b7f1.json and https://artists.proofprofile.net/proofs/artist/ae334dc6-974c-40ff-b7ca-273f0186b7f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Symphony No.94 In G Major `Surprise` - 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 0x780020697b8fc3492b36091e991290aadb7d5ee305e8d1ee10b406db0c437aec. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU1578755.
The Four Seasons Concerto No.4 In F Minor Op.8 RV.297 `Winter` - II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9710f927f6efe26adf66dd7dd6127b9522c8de52b39ec8e2c87966166cd31557. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GBSMU1578756.
Lieder Ohne Worte Book V. No.6 In A Major Op.62 `Fruhlingslied`
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22f03c325639e841264144cac674383f7da9fc93b4d2c70b117e5202a60e0c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBSMU1578757.
Fantasie-Impromptu No.4 In C Sharp Minor Op.66
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93e04b17fe900b0f755c72d59c650b91f2f06e005e64217498c70a4cc140690. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU1578758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa4807724f336fb174383ddb7d33b80cd790bd6ecd86540e78c9c73399d165b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU1578759.
Piano Quintet In A Major Op.114 D.667 `The Trout`
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f774ecbb1c1117b147497eeee6746c2222bce466c72121fd06b865f4ba8360. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBSMU1578761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05fc5afecf08a48c708f2b3c6f729b40e018d0eb55c0a654f691f03891272bc. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:51Z), 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/GBSMU1578762.
Orchestra Suite No.3 In D Major BWV.1068 - II. Air `Air On A G String`
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deb519e4746ff3362dee18d29d9e2669ef8756c939d7b286cbbe7d6f7184356. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/GBSMU1578763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0362d0a99012ebdcdad5d775fb409c55c53a08c4024831ecd1ce2ae875c839f4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBSMU1578764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9319f7083766dd7174ac37d3918861795af4b36ff34ae8067e3daeb4b13de5f3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU1580543.
Winterreise Op.89 D.911 - V. Der Lindenbaum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d96d31f55df9ffcdcb824878095011c3124ee6df361e3ddd0a33060ffbc42. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GBSMU1580522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc3ab3f285ba118a441e78b2ebd1725fce9b204a478dea59652c015712fc9ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU1580523.
The Four Seasons Concerto No.1 In E Major Op.8 RV.269 `Spring` - III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151d801b011357ee45a55b396435b8a704f9acda3ba64ca8dddd287e4dd5e52a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:13:07Z), 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/GBSMU1580524.
Symphony No.40 In G Minor K.550 - I. Molto Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebb2e436ad552622d72031b26359d34fa78c829497dfbf0bcc0465fd5ec37f2. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:52Z), 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/GBSMU1580526.
Piano Sonata No.1 In C Major Op.1 - II. Andante (Part.I)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4838de55b8e3c9dfda6fa5f7237d94004f3ec8ed7f83e1751e3cb57383eafd92. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU1580527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49f261be1bad7e811100b91ac3a9117bc5b624c05df224dc978720d759fcd5. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBSMU1580528.
Suite Bergamasque L.75 - III. Clair De Lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bed66c35b76e2da227e3e606c94588023e249c2043100cff12d389469965f1f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU1580529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f243d8e852d9d3c666580a55903f45d6b6c074703d04900426909dbbe6ee90b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBSMU1580530.