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 0x4c8942f0c2b032547fc0a0ad7094058c5b52634432d47cd03fc967d849115ad6. 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/6f0133a1-a9b5-48a3-b968-196f05d4fd90.json and https://artists.proofprofile.net/proofs/artist/6f0133a1-a9b5-48a3-b968-196f05d4fd90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x81684bf012ea76cc16e59656926902befd4f51952bddebeaaf890be0edfcd804. 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/NOCJB1801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe104869d726a6c2a173a0d824833f00d6b290ad77cbd9974141c96ad4551941c. 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/NOCJB1801602.
The Garden of Adonis, suite for flute and harp: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed308389d5249e48e2133e80b876fd97af598ef18af44ef2b147e3bcbc403a5e. 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/NOCJB1801605.
The Garden of Adonis, suite for flute and harp: 3. Adagio, like a solemn dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a49c8ae1197bf4e70b14a0b742d28a8a6eddb31a4a2c2cf2904b8dfb76f52. 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/NOCJB1801606.
The Garden of Adonis, suite for flute and harp: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a93ccdba21e417538ed99946629e449e669d3bd97792a8ea135f4a9f5aa19c4. 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/NOCJB1801607.
The Garden of Adonis, suite for flute and harp: 6. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca2497b7fa42665764922f4f04edbaf4b5669b5a376568f8746e735f5ef1e3d. 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/NOCJB1801609.
Three Spanish Watercolors: 1. Guadalquivir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376a22aca24ac33a095850b43923da314f0ef0d28307f6c3caa7e0cb6665c53. 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/NOCJB1801612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b32467abd1129a051b5d275e3e7e130199370e77f5130bb0eb09ede03a74a2. 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/NOCJB1801617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f13dc72fe439707b32ff311ab14f6dfdf7f08f05ab8d4faf543e079e8e5656. 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/NOCJB1801618.
The Garden of Adonis, suite for flute and harp: 1. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6beefb429a50b010630772a518c2f74774e44a505861a6d25e9e6d0b56f24. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NOCJB1801604.
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
The Garden of Adonis, suite for flute and harp: 5. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b4b6d9543602f68ca837a1a5637b9e53f9ce994c208aebe6d591ad538f64fb. 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/NOCJB1801608.
The Garden of Adonis, suite for flute and harp: 7. Andante molto espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749f48999d93f223f8e553f34db5dc31a637b43f10eaad7f69574576abd1bf5f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NOCJB1801610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3037bff788c8286af535b7bcb394e3ba3ad74173ddd3b4af735af4071c235bf. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/NOCJB1801613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17640ca7bbd09a5a95f3c273cc9404d8201ff243f3c8da57f845a5302a2ccd1. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/NOCJB1801614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855f4350127be5d313e2baaddf5554df6c2e7eeb98d68a2d599f92739a62f36b. 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/NOCJB1801615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe261e745d916d61c1ae530a21c652f960a8c89fe0b47519bec21da30b280cb66. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOCJB1801616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664eac68d08d5e0660e90e42d5347480bd56afb9dc38933ef8e8334df307e1cb. 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/NOCJB1801619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0436ee63513b2a5f586ed87827b4ad05c2e2c541962751cee7d9fbe6f85ca77a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOCJB1801620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe45a995ce4fa42721fdf0d4e8bc51c9f1426314faab8031cfb0903c1b90ce. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NOCJB1801621.
Fantasy on Themes of Japanese Folk Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0398694604cf8301d22d1813277b2af88998557f2aaac658e433fbf2b8fd438c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NOCJB1801622.