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 0x6e506d55b69c66e1b0878ff816673925e377f85e9153a71680ffb3c7a637df13. 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/1518da7e-b2a1-4c8f-9ec9-a4c624da6740.json and https://artists.proofprofile.net/proofs/artist/1518da7e-b2a1-4c8f-9ec9-a4c624da6740.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 0x820e188a9354a159383f430674e106ce47ff166c885e8a3a378dff2294d64411. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ES71G1860705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc38d6780165d059abbacc5124d7255ae1f219db6582c1cdd7e110a06c41763f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES71G1874796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434a47b15a912a3d484b5e6d860f8f6cacc8e68db4404b9ccb287003d605c61. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:56Z), 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/ES71G1919117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f2bfa7295ab82c18d12d5691ef807446de4b539ade2db0283e3d826e226df6. 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/ES71G1947344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e44907ceaa08bdb904e2f4422776f0488f9d8a9e8038825cd05abed8772e68. 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/ES71G2012325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb32ba14d7c63dfef97d7fddf0a23873821cb3e32d6584077797db81a7c39b5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G2052855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bee22e673504efb6d740f34f1e682bf028a97d18de5037948712bf132a32785. 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/ES71G2121092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b78e609be93b22031a09e83561f61f95ce0523f699ab8a4c3d198f7d0cbeb33. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES71G2154814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288f08878aec51ff65ad5ecf370e01a953a90d74279c81823e223149f187d31. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES71G2222059.
Quevedo II Bzrp Sessions #52 Vers. Flamenco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710b2e8a6a3826c8ff9efee575d7eccd98b023fb1fb4ec76e621ab7a063bf033. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:08Z), 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/ES71G2326754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28de70e3665b1819f3dcdb2e78f3bcbbc964dddcb6b94f198a513a3eec24be5. 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/ES71G2408110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48587e6e151ff5b03e085cd341ca41f3ac7f5defdc35596bc4e622128c415dfe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES71G2417544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28322844691838d3a2954bf616238ca570bebc03a7e23e7194fa9418819ede8c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G2419765.
Si Antes Te Hubiera Conocido (Versión Flamenco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef9c93c60aa9b9f19d155ee78e0efb9832a960f86762f692c29840978e135ed. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:28:04Z), 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/QM7282550907.