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 0x73031389d8a65bd6daa2553fb2802e66dcc1bf989fa4611dc79370eb43c3018f. 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/eff5cbfd-7194-4406-a2db-ce309ae17259.json and https://artists.proofprofile.net/proofs/artist/eff5cbfd-7194-4406-a2db-ce309ae17259.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Holst: Brook Green Suite; Lyric Movement; Fugal Concerto; Morris Dance Tunes; St. Paul's Suite
Still, Alexa - Music For Flute & Orchestra (By Arnold, Griffes, Hanson, Hovhaness, Bloch, Foote)
Symphony in G Minor, Op. 1, No. 1, (Callen 1): I. 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 0xc7b8894145db7abe57d9d2f518bc132d81c18a4e4f8c4e3d4a327af6f05e973f. 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/HKI190322401.
Symphony in G Minor, Op. 1, No. 1, (Callen 1): II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371ca5c2b85a0ef5acf09218d255208cd66f4ed458272bf6626d3b32a535251. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:59:45Z), 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/HKI190322402.
Symphony in G Minor, Op. 1, No. 1, (Callen 1): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6fcf0f5a44190a78a365af9ffa3f8f76287df13c58e897f49ebe860455e09. 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/HKI190322403.
Symphony in F Major, Op. 1, No. 2, (Callen 2): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3341fceae5d27e96fef0d5c298858375ae5a81c42503b4985c79c1cef49aca50. 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/HKI190322404.
Symphony in A Major, Op. 1, No. 3, (Callen 3): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa589ea6e7e16f493040efa752b28950c76aeb559b93c66e364c72b579d3def89. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI190322407.
Symphony in A Major, Op. 1, No. 3, (Callen 3): III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e964e18d3b47475ba21647ef918473bc1bfe69231f0ba62fb50a43bc8d9155b. 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/HKI190322409.
Overture in E-Flat Major, Op. 1, No. 4: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ccd5323f69ca67ca72fef47eb5fcf415f17981b25d9596ce7342a39c551d1b. 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/HKI190322411.
Overture in E-Flat Major, Op. 1, No. 4: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a90503e44edb98bab47a2d77d5ad58025835c37676aa70ad0b577dac378679d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/HKI190322412.
Symphony in G Major, Op. 1, No. 5, (Callen 5): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0861867e2ce44ee3fab43b07d6545db81ba5107c62f99b97579454d2b5602c. 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/HKI190322413.
Symphony in F Major, Op. 1, No. 2, (Callen 2): II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759288a1ab0219b8b3bca6a97168168c6a050725cc8dab17df941bbf662935d1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI190322405.
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 in F Major, Op. 1, No. 2, (Callen 2): III. Menuetto - Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2fcdf5ec1d67a841c91ab5f6d1d90027d9695681df04e7484e066e905e3265. 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/HKI190322406.
Symphony in A Major, Op. 1, No. 3, (Callen 3): II. Andante sempre piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45418e991fc15a3e536bd690f6c3892ad20fbeee0358035c4d697fea08354c1. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/HKI190322408.
Overture in E-Flat Major, Op. 1, No. 4: I. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ff9dcf736f5b3f523837bb022144c7236a0336a915b79f4dd225e287193a2b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/HKI190322410.