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 0xf9bd169f579d83c5c69b38ea4d71d516b7d67a1b0615bb773f234f7d23344445. 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/54718535-f284-43e2-80f9-0147950d3be2.json and https://artists.proofprofile.net/proofs/artist/54718535-f284-43e2-80f9-0147950d3be2.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 0xdb02092e9c3c6e1440d3206d0231f52923a67b6198e5d42cde98f6c4dbf7d396. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2023957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f60181bf0f399f07477290fa119760e688f3080c0db19311825bb73408b304. 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/ES71G2153538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e1325a0d22c3fe1f2d16a9b81f6061313dd4d0da81ec7ae3801c134abf801. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/ES71G2334553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2964f3990cd9fb78793189ebe99d7b087c20dbb3522cd2ad7bde6b47f12cad30. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES71G2334555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90639fabe99e994ef0ec198526d0431803a6137863c3467ccc714579bc681c94. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ES71G2334556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38279542edc8463e3fa1ad73a66112fe336d2bdfbe78967bf9fb186abef73609. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ES71G2334557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301f33b488a3a26243e6ceb7f846e1ea2641947179ddd54b6fc83eb066aa72ab. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:01:00Z), 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/ES71G2334558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac6012e57fad6d7c95f1c8404b0c2faf7a2df665d14764501e4bb12b5ea6a45. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G2334559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e57a9d4b18472d84ae260ed685f865ea1f4833df06d7a4b5b20e08c297f39ad. 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/ES71G2334560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef28ef87c510a8195572b95c72b89776d5b9f1b24e403ffab6f4c0ea1b4135b2. 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/ES71G2334561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b128fdb6e5a2a37b734cf8b5a86acb35a40e2a34337996dfa87ebd1fb6d228. 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/ES71G2334562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f60181bf0f399f07477290fa119760e688f3080c0db19311825bb73408b304. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES71G2153538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38279542edc8463e3fa1ad73a66112fe336d2bdfbe78967bf9fb186abef73609. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ES71G2334557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c266bf5007a9779c5e26dddb01bc02803e3ccdedf50db19175487f0a87fd61b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES8242442505.
Tot Allò Que una Vesprada Morí amb les Bicicletes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4be1b525c447e3a702620972482de7fb020973335590305100550b71864e85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES81G2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4be1b525c447e3a702620972482de7fb020973335590305100550b71864e85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES81G2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307bb518053af8e814d05152bf72dbc254da670a215fa39b325015f72c3d0d01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2508551.