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 0x63b132021c77685ee1810dc35752c11dce524a37cc741e9bea674a46f909a70c. 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/8d974f7d-980b-46c5-beba-8187535b0531.json and https://artists.proofprofile.net/proofs/artist/8d974f7d-980b-46c5-beba-8187535b0531.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 0x0b01c6e6dfb943c51746a46a9b9a36ca31113f8afa8f90a8c08f89fe2e0a57cb. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/ES71G1932633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c52daab5c5230436b2622cf45a5d7043d9d35ed4656cff760d284264f16524d. 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/ES71G1943484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da80250947addfb883349d98772023491554f9c6d8b17c201dfba6c90260962. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:57Z), 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/ES71G1943486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7606a44e0340cb8e4fc064610fd41ed4e91f04c66d6926951f1e10587236c086. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:00:18Z), 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/ES71G1943491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e956d8ab8575c53076b3b6ab35d140c6b603b3bef13797f7bd74aeb6bf3119f. 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/ES71G1943493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a4c22c2b38f8c4e5893ab9f2db724ddc53921d5dae172643b4b469c6d321a7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CLUM71902628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96126abd510127306594a1f97bcf33c9d91cc920081d2084e0a1b35744e18b8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CLUM71902639.
Lo Mejor de los Amigos de Loica (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac54a57fcac2dc1aa1b43ca04f092d337d33d4b1ff78048ed32e0d07cb496723. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:55Z), 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/ES71G1508523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597dc88afb7e44d729e04fdfb16267337d7f01b87a325d0699ec5996e81e4894. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ES71G1508524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eecfbb1eb59931e17fdd4891187e1eff614548dd8bb21cdd6ab0f9e6b1fdc9. 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/ES71G1508525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0687c6539bce668a2674262a7ff1dfd8388415f868562616726ba8c832fb823e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES71G1508526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e140fef6ff755236db1c33730dc51706345c74ba5e795fd6694400eb39fc6cc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:04Z), 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/ES71G1508527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd210201a238f7770f7f505f358c6bc1903708396b41c9d5e16a6a167324b9. 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/ES71G1508528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05de04e065ba7368531b5c387be26b9ce4c53aa60285530f1f195d2c720593. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:59Z), 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/ES71G1508529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ae250b1463d12ee18ff81d92f4157f13c00e8465fc461f9235c8cd19c893e. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:55:39Z), 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/ES71G1508530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70649b4e2707a53c10397294b6371c2c467fddc9a3464ba894823fca7e62b2bc. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES71G1508531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd492f00a6c9b2f6a2a3c5a7b398f8bf896e195974e936d9867ac7b6bb8060. 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/ES71G1508533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd306dc3b8534e4fa2c1bd7b276651978995ab62e0be3045af0602e84f569c8f9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES71G1508534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d310e3830c9d56ed0e4c60d0c61b2591878f0dd16b4aa556d1617f60b29d98d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G1508535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7c53b1b468fa44f596022cfdfdac8c727fad8a338670a5fd99525344ae3c5. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:29:40Z), 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/ES71G1508537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43efc976381fe8480543b10160df2b6cdbe09fd0f1436a5bda316625221467e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:41Z), 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/ES71G1508539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451ddb37de69f79a8799423401b7672f78de1e02192ffa566f2b8803e687098f. 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/ES71G1508544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5d17f7918edd35d22d86dbe27f32aab71458dcd834c93894ab618f266317f9. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ES71G1508545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c98520c1a85619553d12a5d5567339d77be480720d286e7cb07e3f13bf3852f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM4TX1727317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc569bc909bbe733a49ffa53de2ee03b8455e8a19f222901681ab32a750551dd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TX1727318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060a3554e5306b7a5769b1e8f3bb429432b2dfb607b320774ee74c054fcbaf5a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TX1727322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eedc53e33879a9a4b715a0dc96dfd7965b4eebd92d35ce8fd9a25c58e3b2715. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ES71G1864899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeec3143c1c72f2f8c7c2f90ebdcbef3f1e0c537c03b086ac8853677d4e1ae4. 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/QZTVM2430728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2058db5a8c1a707cc05979ed87b372bfca51f5a51678264b2ce253e0637317c1. 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/QZTVM2430730.