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 0x5014212b870fb80dc41e5109e81581f1b08fbd8fb17eb5619872fbcbb4ed5ec9. 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/f30bc261-3925-468e-ad5f-afe4467a1e9c.json and https://artists.proofprofile.net/proofs/artist/f30bc261-3925-468e-ad5f-afe4467a1e9c.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 0x8a71f426fba21e4d8a528469ec87e721bc598197fe29c459958021b796091fb3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:51:13Z), 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/UKXN22372559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21310ed5702551935ae5ea3e88009d1475a880100018fa07c044297c9de6bc19. 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/TCAIA2446502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21310ed5702551935ae5ea3e88009d1475a880100018fa07c044297c9de6bc19. 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/TCAIA2446502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a1700bdb6f767ca40754540967ce8e6f3f2ab9b6a555810fb39486bcf5a5f. 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/TCAIG2471629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530f1a3384746dde6a757698a2a4e3042cd108d532b83737178dbf19721b9789. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIL2411938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d75f59927baad26d093c1b7e86f298e404ce0b00f3f8ef8d41891a6cfebc0c. 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/TCAIB2497741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de14e0c367739d4a0003b5a3f178c9cd9cbc00e85f52e26ed3daac2b7541ae. 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/TCAIF2401535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de14e0c367739d4a0003b5a3f178c9cd9cbc00e85f52e26ed3daac2b7541ae. 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/TCAIF2401535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa77dd98b5fbe4ac37ad7ca46c41e22cb52672af57be55503796bbee13d59219. 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/TCAIX2450511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd7aab81e8e73720143241b0b5d3873dd3b8a678b631f43e85be5e75d6d4c9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAIL2489157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed60e06c1bf1b037c2490a3927df9483c10acd2e8f3ec089659b217712d50b2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCAJG2518369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658f5b715b762c43fdb10c921fc0daee171b58c66229393a5320f46e96223cdf. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:51Z), 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/TCAJD2582249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c9d86ed08445e356ad4881b25741c16f491a1a6ffe0796b51b0993223e2e4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6XX2557787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281c59d1e9cc20aed566915cc0f78c81c50d3187a8196a26ea3f22c9c3e0741a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:53Z), 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/SE6XW2546931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293af21f25b0e88afb7f20b6c17c14ff84b0a987e72a84045a159d6e968ce6d9. 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/SE6XW2573870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75a845453c664cd644fd8e634ea44e92f4a749fdadc02abb82c2cc77a675df3. 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/SE6SA2527363.