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 0xf521786d148b62122bf0b56d9b65e80b74fe48c7995a5951a2c6df7e0a293170. 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/82487289-e871-4ae1-8af9-fb896014c997.json and https://artists.proofprofile.net/proofs/artist/82487289-e871-4ae1-8af9-fb896014c997.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 0xb7efacdc5c6aa16fa8f473350911452ad33c597152b27c83e8acca42a6b5c0cc. 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/MXA3V2414317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dd0c81fb0d1b2153e3d3086f6b4f23442169c320bc889b6531d01bd17ed32f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GXF972422032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87502fb346b98515017d921d364d298ca572cb7c350d56cc5b7e3d6f0f406483. 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/MXA3V2421843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bdfa114b3579ec772d2da9bea5c05ac1570593abf2b1b20507fad8518fce46. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/MXA3V2421847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290b84e3aa6baf95ee57a4c69d685dbe8160efecc135c9f19db967bc65817d3b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:35:10Z), 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/MXA3V2421844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02afe7727b5dcd226945431d9f71b96b31119e73dd2b6fcad2fbf5aa6b671cf8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MXA3V2421845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1751873fb008daf5ec01a9cd7bb67d0df5f39b98dcabec64ea1cd67a5786e26c. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/MXA3V2421842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b360c61a6b8569533a4d8890e00f0727a522681a965ca5b0948bf987b4f9ef. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXA3V2421907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb63bfcfa8765f8a9dc71de02aea5fdf58ad540d95240268108bcc14a976dafd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/MXA3V2421909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17346229df0d8bcf808cb8afef7872d74c80fd16e3c10e395987c9d632121cbb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXA3V2421912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26faaa836aa31c8c754ff67e873640e10b04d7aca84c68a289ed2904d8bc593f. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/MXA3V2421891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0a51d792f047118bdd6adebeb76d66241f9a9d353d047bb6a3cf7ad242ed0c. 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/MXA3V2421876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19720af33ef9b1342762eb4096c68203e42d92c0bad9eb2a77671bff5099994e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/MXA3V2421873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b49415e9b215cc84b7f2f5b91568bfa286dca0c1b10ce09eb66c90a56cb5d6d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:35:52Z), 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/MXA3V2421874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2263138ddd21474cc53ceb420811d26e469cce05393e73ad6bf05ea2af1059. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:19Z), 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/MXA3V2421989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8322cdd39143539a5f21dd860b33490c326aa6222a81e7d9411fcc5641cad9b. 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/MXA3V2421991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c82122bccc2e40fa470f5c5d0eed9d88dd509783c9691a0b09bb3febd8fa2d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXA3V2421990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaebd0623571d2f1924db3012336af58f6ba55c82f996b1b2d2fa2459511f935. 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/MXA3V2421987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa133e42181cfcbe0f57aacb817e6045d18dd810b4fa81fdeeb371c10250e2b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/MXA3V2421988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ec651a8dd7c3a04d192496f99d0d0814a094936c7912f50e8e438278a751c. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:01Z), 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/MXA3V2421994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2160c1fb73ff122ddeae7b093b60745ade024e390e29d7256d5c4e7265013c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:57Z), 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/MXA3V2421992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3baf3d3ad9ab07f81242ab0995ab5bb7e7d053fe3b44a042ba4a842697625d. 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/MXA3V2421996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb64c0e20628801b33583e6025663f16c9194176eb00b4ca4dd40c23eeb92215. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:27:43Z), 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/MXA3V2421993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668f7d13d930da98286f9b70fabac20c4ba3271caee486ac608b828d2fbcbaae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXA3V2421998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf27ae862fc565c7e32c231db499ca72c3de101c859cc8dafc3703d03e6659. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:37:35Z), 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/MXA3V2421999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8423f127990be24359347aed72417618258e4f5fe46367d2b82fbe1c0bfa040. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:57Z), 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/MXA3V2422000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cce6b13386c7f756583000260124c366fd1c0d8c3635283e7544bade2d11bcc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:16:12Z), 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/MXA3V2450921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0a0be2a9c319c887eabfdbb3ee754df7235d94edb5d73315e4bdffef1548f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXA3V2450930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57842a03987609b30cc750ff35fb1d96404c359b2734bf2deff0fa0ffc02d261. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/MXA3V2450928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f160416f0ad91e9d68fef6710d474ad438e7c1ebba356d9905bd7ee88739e4a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:33Z), 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/MXA3V2450927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8bb289e1d649e87ea2880193ce7eccc21a15ddde63a5a615b6714dc1add905. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/MXA3V2450932.