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 0x591393bac0870dd7149b3c5e9d42733d95cbdd24557af6681492edc1c93332d4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/485cd815-6431-4537-98ba-2186acda5493.json and https://artists.proofprofile.net/proofs/artist/485cd815-6431-4537-98ba-2186acda5493.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 0x3ad6fc3786190c190364f9f600069c111477291fff4e3a6b4dbbd22d841a78bd. 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/BC3JU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4317546aba10f68645f7e55126b9853dbe7b366ffc28ef72055eed8518e07b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCUXI2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc598129ab80f32c72e23bdca46b37bdfedac1765295305f1f1a4432e37f0a6bf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BCUXI2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297978d40f1d11519269d635d3d4899c0e10eee698b04263f5ff61b7b63faf96. 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/BCUXI2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98138d0b937bf3e3c8b0a6c85df2f8ebd4f8229f8ffa7c12b8cc691dc172158b. 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/BCUXI2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406ed141ff250599901ddaa15f126c62a052530d1a5c87992194f6908dedfba3. 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/BKUPC2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3403a14d9ef29cb83236ff81aea2317ead01920840273b158d309514c417f88b. 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/BC2TS2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83abc90e99cb02f322a291c7ed3e3655f5268faaca483645bbb272995a3f19. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCUXI2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9275ec3653b31e281a3bc0a8ee8fe46de1ad708136d5e93aa17426f868ad4cca. 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/SE5752468502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa825971c557388ac5c8fc538d283e56d8a7378aada86348cf1a5a81ca069e4a9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BC2TS2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4c4594db227eaa7977ddc0802fc4e88c5fcedae136217d1e186057b641edd. 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/BC2TS2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46142562705049c5269baff8cb60fc86c3d9b7fcf9fd6324b526b3582c1df9. 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/BC2TS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723862d8e8a816956e7ac52d46a9cd0c2150d55db274c109820bfe74295fafc. 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/BC2TS2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ee194b7cc7b78635b346f99bb5c17eb5cded419df31f5031f2f63cfbbea3a. 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/BC2TS2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a62e5faf692006f36c13d1d3856bf555452377527f36c6b108271ed0e4c97. 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/BCUXI2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b635808f0f6246d90d2d2a44c57d74bef8585560347fc0c04acc4edb5151182. 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/BCUXI2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec546468b6ae396049214121955dd1b0b5f2127d0add7497f15c923f46cc7f9. 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/BCUXI2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f369812e1f24c58fee40d47a6df78caa1d648b43acd2dca65f33e641bd63e0b. 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/BCUXI2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a151510811a2d7b42d4f1fbd38c24745c8aaab56f2ce03535648a9ac30a0f6. 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/BCUXI2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e76a847dd0a22a483f5544e0f71152fac119aa5e37e54108d8fcecd579bb07f. 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/BCUXI2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e08a1bd8f0287fc584733b83f836037500d7d82e978e07eb9fe71663a513398. 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/QZHZ32116095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46142562705049c5269baff8cb60fc86c3d9b7fcf9fd6324b526b3582c1df9. 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/BC2TS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e252b3f60a158cc03ca6f10710f5c70207025bd2ad7e538ec2ab4d9df7dcd49. 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/BR5TG2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4c4594db227eaa7977ddc0802fc4e88c5fcedae136217d1e186057b641edd. 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/BC2TS2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ee194b7cc7b78635b346f99bb5c17eb5cded419df31f5031f2f63cfbbea3a. 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/BC2TS2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723862d8e8a816956e7ac52d46a9cd0c2150d55db274c109820bfe74295fafc. 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/BC2TS2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c8861e5b248e12cc2bef1f74782c16e1c5250602ec28f226ae3e76cd7f8f0b. 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/BC2TS2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7cb0f807eab7593ca7229d9dfdd2d15749009e7b5c895883cfada94217da7. 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/BKNDN2400157.