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 0x57022586f9a7d41e24a468dc62faa82544b34b4a6eef4d28926bd32fe58014e5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a60df497-0de0-474a-8a60-f6bcb6fecce4.json and https://artists.proofprofile.net/proofs/artist/a60df497-0de0-474a-8a60-f6bcb6fecce4.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 0x25479c31975752a72163761941a6594b6407ca5cc5c1ab6cbd852db2dafa041d. 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/GBAAA9710480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c315c01b599745b197d77b2b16642f6428c8c5b4a079040c65f7c5c2e26951. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAAA9900775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96874c6d829a8eb3133dd9968a7a795afff703d1014d9b563348535ac70df0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAAA0000611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f5b140ee0ccfc24cb705ce02c1976357ae9c981b3cceb5d499d1466d79ca1c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAAA9600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b611729849a91d0a3271bca97cbde45cfd83227b23774df167c04e91458cf0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAAA9900776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fbb1492d2cf7c86969723a777828666b1dc5f946ce8f2f603e0e97d20e8ffa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAAA9600445.
Chorale VI: (Sol–Fa) / Cantus: Song of Aeolus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96cc2a5905df087cd9990d6e28e46fea0940b0c033c03d91a4e7b68a5f2bb0e. 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/GBAAA9600279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cffd4d6d97804cf5f91770df2cd8f9f0336aa734c1fe05d7e9a4c992ab2b787. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAAA9500006.
Gloria: I. The Proclamation: Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a311586fc888655898154ae30fc7321771cc266fa17c3e0ef156edef27a9f8f. 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/GBAYC1000837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c661c1361055f1b4684b83bfaf0776ab6464beee2ff6988db2996815a538934. 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/GBAAA9900879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000c9dd47865c828e4d4508fa1bc68a65d98f72e521e2d9f3b6b6a1f7af8c027. 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/GBAAA9600439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cffd4d6d97804cf5f91770df2cd8f9f0336aa734c1fe05d7e9a4c992ab2b787. 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/GBAAA9500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f311fe42d2da59a9c9bde9e94ea4da959174595322f15c09c9f003c5c0781e. 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/GBAAA9600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51251d7c2941fc5ace010439c7e284261a711e9ef4999483e4b29b0d60f56bc9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAAA9600440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f3e3cf3f276f88a692a5817163786121340e166de9ca386425116d1681a1e. 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/GBAAA9600441.
Stella Natalis: IV. Only Heavenly Music (In Memoriam Christine Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a7b858d649b22e8d4a59c8fe1825e5b978dbfbd33028fc62c5a72911de6e77. 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/GBAYC0902275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b77f72d70e55ce4aeb52b3e63ceb9e8f29c3e9d35fdabc372e5420f231ea264. 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/GBAAA9600266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3981661e3170bda1dd4331947bc83b235d320602bee3143c32dc814811c7acf1. 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/GBAAA9600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a311586fc888655898154ae30fc7321771cc266fa17c3e0ef156edef27a9f8f. 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/GBAYC1000837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218412380fd39513864decefdddeb95d3b46d015a161c2bff0b222fc89249fbd. 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/GBAYC0902280.