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 0xbd3909c1bc9e7ec062cc19792d8cf2c3136440bfb4a2299595c3805117d6415f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69ad9953-192d-46af-b7e0-f43103c21852.json and https://artists.proofprofile.net/proofs/artist/69ad9953-192d-46af-b7e0-f43103c21852.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 0x45f23dd0bb631340db0d2268eee1ceaef05613a0c428763eaf6bb272ae70d3e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCADA1756451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a0553ef5c338a817041da597ec0b79d8fb5ed8d85caeaf0f92b753c7714490. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:46Z), 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/TCADO1829476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eb33aec746218cbe3d006f0c62953246f39c8152ab8494260256dc6a3b3800. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADQ1892626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b0395953715910d466db51e738e596ae123b87f90b4c9255fd930040efe3f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAEH1920124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b4a9d2fbf298c91e95d59017479a0101eee4e8e07a615133e26e1db01b7340. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAEH1920130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718f57970f37f4c905ce1727107ab4d23aa77b608cc56c58a4cd291d8d760788. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAEH1920132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0852a83c63ffba3e88e843d7b124e0767055b377c960fe0db2aa1578ae4deb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEH1920172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8963ac970ffe5e8a690ee547ee23f78c85334bf72ea9f9709e6111f742043f68. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEO1993079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83316bd44d23360a37f9a212bcc702634e0e908029029640ab3f8eb97f33acb5. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAEX2098310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd23591878fd8954ada0cd86538831075c6faa9317c4a5c4c0ef4c895d6e786f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:55Z), 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/TCAFN2160108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84317317771581d34be688b7933e189b2ddaa12b8251d1d600da56b4165eaf54. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAFY2159412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b903118093a447d8bc57b7fb8093c0a0708eaf68422516e70c2d7e33e4693bc. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCAHK2347044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02bf2974a5664c3f3ec84e0aaa28e41a486f6650b310eed3ad7a9491e0149e3. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/TCAIW2450671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279d021c3fc8f9259aa58eb740a0eaf3267bf9d5b851ba412ff3beb0d4d6d840. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIW2450777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1116566f4f32600dbdb124bfdcb323f3f5c521436bf016114db317b0d2c6f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIW2450819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7759cc0ef9bd865a65ad3e766a229aaeb166b51f6cb21d3c9fa07c84aeed796e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIW2450825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60fa5e1061e211c726fef5a738a9ec806cb4f93165683cdd3ae28a619427be3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIW2450852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61cfed4a1ecbf43a7542444c6fc94d5cbecac99e316f9769ff3350335bbd96. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIW2450868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6438be391a77725b1b51666aa78c999d8cc3159a388709211b6c11dcbeb5eb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIW2450887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde62ce2d7fd5f975bf5d57b04aeb868dc94dad29ea29c67ed6e647eb5a0d577. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIW2450903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa681020ed555c8556f1454a7506ef865a01f64c3f48bbbf7eb745c1b8869a7dd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIW2450913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3505eb58e267dc44d286bdd154c6b4ea361928eb13f13522b3a93e1bb899252f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIW2450922.