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 0xefd979b01ae3786c38c6d80957d1b8551b180881cb7c46887400783cd4a36d08. 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/5777161f-a095-4444-b420-a63b0edd1681.json and https://artists.proofprofile.net/proofs/artist/5777161f-a095-4444-b420-a63b0edd1681.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 0x84042ac3b111db1f2aefac513cce9a56c1cfa84ea1028f8e729fa50c742a3cfa. 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/USUM72017419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc4c2a2fbc451f1d6d2d910a8cbee8178188d74d700251cc9447d4a7a9dfc91. 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/USUM72105391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47304df138ce06d341ee0231ed2691f4c4c62a67954973ea478f7c8943c43e4. 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/QZK6L2243975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cfdaf27dc899966c83512adcdf415362cff1c51c610fbea3dd7874da9d0320. 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/QZW9K2257887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03603f5d4bf36a550ce4dd5d712ced818c6ed091060aaf10291e2a45a2cda8d. 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/USH951460002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad136d180c85e305cdb0d9a2dd023912e945e44b36caaecb872556725cdb89e. 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/PEBQ91722591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe943b9bb5c5184ebda06012ae052a9c369b5ebaa3881c2602a359e33cc5433fe. 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/PEBQ91722593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2fb3f3462357423facd657f3ca53ad229b7cbec64cdfc23c8b1f2fb9e5bc24. 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/PEBQ91722594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825c99e9a5f87f6ae8eda19d3a224e85b81e6fb08b02125183e2b6620d319d1e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PEBQ91722595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0752b4e2193d867f9558a30f339c57fb702bf364632cf4ff24a7a3b49064d60. 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/QZNJZ2430755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60235acdf794bd64942977b445aa298ef130ab2b18ea81152cc09e9bdd1d2e6c. 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/QZNJX2493434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacf2b0a62861af0a59582f168dc283f9890ba41b6d05cada89216f976d155f0. 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/QZGLS2439134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f180d6f07ddea86dd4c837be7fec4d252e2ef8610881495a96bc3168a83ccfd. 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/QZNJZ2347226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8e3750c1cc9638e2eb007804d0d348f3b0d9b44cb355fffcaeb84b87c9136e. 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/QZHZ62274627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8e9e89168377a7af916e94c25a6446656363e957307256f47c7d735e659684. 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/QZGLS2270403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aed3630d89a8184b11cd47ecd18504ead43cc683e87f3ea5ed27807be8d86d. 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/BX95O2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9d5a3a58782080da999f8f173571621ed1341681d618141da8d717293fe8a9. 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/USHM82175363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23a044567bdf3886e354f2e311bb2939a5595c7181d3cf828b40ec9bd5c980b. 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/USL4Q2067859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db9c8974473328b2ca9cde3499545e39c37a97d7882ee21a63cafd21995b103. 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/PEBQ91811409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8f9c3b9be2c8815611275e7b73d3f25c75c3f01e60442644467f9de800eafa. 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/PEBQ91724213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1992faf2e882aa295ccd4c0dde7bc89ffa78cffb84f12c29e15925819f79972c. 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/PEBQ91813188.