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 0x9d37f5bedf6d09996b9388fe82942255746c5dfee0a0f9da910c834309de3a32. 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/badf2bce-5c05-437f-bde3-b135e606a457.json and https://artists.proofprofile.net/proofs/artist/badf2bce-5c05-437f-bde3-b135e606a457.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 0xf2195040c1442a44b9889544c2c01f96e5c382c7c8d912a128d3359661bef019. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRS182145992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b86db77ec2109c03f221c1e2a61121c61ed602d702acb3f4fcfe93b381dbc. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:22:47Z), 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/FRS182145990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c9a68967ef6ecaa99fe6c491c47c35eb0032fe032c9f8db9f6f6a2867134c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:51:35Z), 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/FRS182146003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c1e3e3e4c6c6d2daf40bfc8d9cc8fa31eb6800a66a7876039029b72a1c0288. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FRS182145991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753764e0aacb88d4924c7ba1873f684b1c10e1bbab7278abebaa1f4d34d467e5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:04:24Z), 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/FRS182147020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e818d6e2683224f08da21e99dff81cd8376b9d672e5fce790a3ea4c8fb92103. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES62109931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa269f540df6834d19780d5aeac65fc475fcc0f78fce54de8c7d1f6778e7820f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES62143293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf793698031c757699b8b770d669abbb2cb0c118afb91abeec46ae3a716c18d6b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:13:42Z), 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/QZES62144617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f01dbb66dee556bb2d993eab0dd19c2393ba37e83f3e93aff17b1e65b80c30. 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/TCAFW2170677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5665b052f0722aec6968e95b080333c129e225976053554d583df7c0b292d0e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:35Z), 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/FR10S2259686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7529a6df85e675ba6409170747e9cf6b84b90c46f1860723764cd01817c82f1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:52Z), 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/INZ031410759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e989d491a4a1b56fe208480f1782865af48f18831a9553ec6b572d66f68a563. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR96X2278556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511901e348f1b585e0c0bb95f73b3f189c3d841849df87e3478101d7310d091. 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/FRX282203484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed50c5831aa8dd6e779667721a8258423937549654957ecaa72cc353521fce. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA052204742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c8897b62375514fd65b030ae369f5b83ee5776219c3118bdcbf9c84dfc19c0. 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/DGA062299420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120ae82965464334badbf97c176fc2dbb0d74fb1f8730eef85765a94ea7a43f5. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DGA092220514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710fe997fe9239645fe34673733af4fc33cc0b3a79347a6f104844f411eb7224. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282337589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88380f5118d2e9df22b49db5dcbf5bfaaa436b3db2467a6c2ce9b303df0d1737. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX282363296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0232ce4c56964910cc63c8826dd90a402b6010221fb55948cf35257918f794e8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:09Z), 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/DGA092362752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2aa7dc4fc95caf3f08b250b9e895ccfdf3ed0f2aee99b47079793f93c4c1d8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DGA092362753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7ccf83e034cde602f5b8702b2ee936d9c47dea8af0c12b87ca6b68e2eec713. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:30Z), 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/DGA092362754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d91e01a62c32c43775564ec7203fbcf7116f5180aa3dc7edce2d5a5bee7bc22. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DGA092362755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd5f22230e33c36a0166181f33bac29785a96f46760ddf1060fcc4f1494c048. 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/INUM72400592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb948813b16cedca2446d5384b847bbb4a73d1aab3cd9889e85594591f434ec8. 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/DGA0P2433888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407eaeab0149b83f659226a862267a4479b68ad926e84f37b151e0060fd18001. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/DGA0Q2488416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc172bcf2ba4df546eac405b3e7104ed32f03c3b90c70b9a755e2453043cb586a. 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/FR10S2506787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe5d201800107d1c280be148a2c23f4e8094884a747ad6114604db445a9b4b. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:10Z), 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/FRX282530484.