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 0xec93264b2692dc84b33786f6aff143a5b9e2b7cb61af0a42f51a8f6cca803b98. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f70e486-660b-4f2c-b08f-fd047f569482.json and https://artists.proofprofile.net/proofs/artist/0f70e486-660b-4f2c-b08f-fd047f569482.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 0x3c1853d965f48d0604d93857a4516e25bf7b60e3d6af6ada4d21eb7e0fb425ab. 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/BRVR10500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9384d71e234dd0a371d9f5e7447984bdb138a1b1bffcd292711e91e9ad4a092. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVR10500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27a544e3c2409871ea4dad1df72fec9fad330121753365aa7ad6284e0ca68d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRVR10500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44be218190fc9a3dea04ea099ebece5f110ed774374cb6f4458ec123de1dd1bc. 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/BRSO10402789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029070d3991ffb087a53ac3112b674e50b646eb71ad502f4e3ced861878cb260. 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/BRVR10500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae9d19938a6073ff316fb2b76c7ad236c8a13dc7b774739797b96acf5fc37b5. 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/BRVR10500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578669e334a0e5beb0d9f0e515b84f57b9cc9bc7d2f77f0bff393479ea67b354. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRA220504852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f108491e11c56e163752880c2e15eb94650ab33d65ab42999fa7236fce54cb. 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/QM6MZ1595362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cd777ecd555a52a1786a7cfecadc1bde8cd2dfbbffe7ddae72ccf04157bcea. 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/BRVR10500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d00755b48606b2ce740a395d584489281a42afe8c44194506196422e5cbeb5c. 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/BRVR10500723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9384d71e234dd0a371d9f5e7447984bdb138a1b1bffcd292711e91e9ad4a092. 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/BRVR10500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1412dbc0c40c60a984081fffcb9b1b432e7d4cb4bd0e46883c58bccc2329da. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306e1064e3783a40e0fecef51b9ce94811c55b2366fec9a135d7e469c85113eb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0427f76423a5356301dd7564bfde3a8ca27408d6f8308f464eadf31434f023. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVR10500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400aa9ce9a7acf5effed215abed70f52d6945511cdde238b8223e5f978ab1f37. 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/BRVR10500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cdf8fca50c43240c2b566155d9d50c0e08dc1131333e8cc762280b0bb34f58. 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/BRVR10500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b4cffd4147cce359f1d2c4b4b53d26ab033352385739b735c35abff48ad9b5. 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/BRSO10402781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6685315ce69044d372e9b3edeb9af370534af472a96ec597f53e97a81161f3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BRVR10500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc8a491e9d16a479a924286a0628773535b0e10c51d283f27b6efe4778e05ea. 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/BRVR10500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58846e9199054691c47bcea7db84e855a05e137a084b540a416f527c41939baa. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BRVR10500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ff838e03cba6e47e9c6a785d55348c1cab52a55c979cd029b7d56d72442b5. 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/BRVR10500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71a71c20bbb3e5b366acd45914123a0230bd083b21e167887bd9b01ddd8ac08. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRVR10500669.