1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1b30bf08936ef4ed7019742f1f59e4c8ded9efe1c741e5b8690a6dd2a6c44ee4. 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/1675c040-5f3a-4818-a145-731c05fa2283.json and https://artists.proofprofile.net/proofs/artist/1675c040-5f3a-4818-a145-731c05fa2283.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 → block OTSBitcoinBlock must exist at that height 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 0x62f7f30b1fa03a2abd850201f10b6c5b909200f6561afa2fb3632c8d86d9e446. 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/QZTB82446699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbdb1c7a65db7a966b6b8f1b8be2b0e36ab392d6728d65c09172394aaf6cfb8. 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/GX4R52452556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf34e41b089530afa6ca357469b7fbc572a7c6bcc254720d234cb71f54826b. 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/QM6N22495768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73d41338ad99fb02bc02bb67d4fca1517645b3d76a1801f2031f3d68d45cb5c. 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/QM6N22493476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa419d7deefbf7f7e8539304b1b7bd584baf16200e9c896d02d73d202face7c8. 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/QM6N22495852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb79367412b51dba4d71209931ebaf266d69f1f29732c9a47f97223e6332686f. 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/QM4TX2414818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf8acb55ed795c99c70bc33a4619be3b96b9217a67c0f616e8ce125552a7dfa. 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/USA2P2357106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f1454f40cfdfa915578fc93054bc1a35ccf14af55d021daa092b1f1483e613. 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/NL4LF2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93133a3a9cd48e5ff629df1bcdb48bdf05f513cd235440848992e1c5c5c05aa4. 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/NL4LF2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced39947257a64a53e5540de9f7b4f26c50dcd7215ec26edb8f3b6088be7d14f. 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/NL4LF2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa889dc8bc773c730a286d3ec0eafb200c4a06f221e50fcde55141be593c5b8b9. 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/NL4LF2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc7a3d26c3f4bb458486f4778dbb0a5fb872a746c404f33bc5db80e13a2b65. 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/QZTAU2219236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa401ff6800aec71c4300ca07e5969aaf679c5812dbde04f669ced1b993c0e101. 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/QZNWW2286883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a5bf7c6e4322b6babf582a5351f50b5cbf417ef914f25416158970c24cf637. 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/QZK6H2240705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c89466eb170500fdd0d02019d10e017a2f04857b37c31cd556fe1fb6b19b1. 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/QZNWY2133442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a09b516706f8679b2090f54864ef6ba76c9d6f2c3e069afccbe9daa59be6146. 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/QZK6J2166882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9a007db9eee7150165cba5532bbc36517f8ba6ff2f98a3e40026ec71691350. 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/QZHNA2125586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3685a34fbfd33acd00e3a410ae2ef229c54500152c0763185c72936f1018a8. 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/QZHN62152982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a8e53eebbdf9113d44ae80fa65f4d9986c38824e90f701590fffcbea90f9e0. 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/QZHN32197552.