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 0x54e951bb1c2c3b1b9a48776527dd6c086a404c06a260aa5269c0dd98324e67fd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bbba07a-c4ea-486d-8d51-0519cbbc083e.json and https://artists.proofprofile.net/proofs/artist/3bbba07a-c4ea-486d-8d51-0519cbbc083e.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 0x961cf52bbb3084d66ce8bf9b645fea43fb5ffb8925b8771fc10ce770cacdd961. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/USCGJ1804339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c8491b38755bd29962446b09c64a9669d46eb58af92b35c79f993cd4c6a64. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM7MR2301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467f83e826eac3a661e9b1e31c819cab06b348bdc7139b5f80ac46cd5dbd376. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QM7MR2301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367cb78e1eb3786a544932572aba9a2a81f1e7e800bf33be2bc91098ebaab738. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:30Z), 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/QM7MR2301376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4407ba41adcdf282a1ce0a5886b7a40d9ed7a5b38bfcc07c2da88297a01e30d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:44Z), 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/QM7MR2301377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b585a3946c3b0ec392392b7a635c4ee14f2bde7667bd10206f96d76011a3d5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM7MR2301380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065aec76412e387d2968f484da98d9c070ea045ac27635b68147f24b9392cc42. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM7MR2301381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9143ee746b8c290de99e911c19ec9214bd2a9f0a860088e2861d6d392c61a0f3. 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/QT4K32553430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913e9647a7dfc4b41026d36f5197f87cca8b72b96626390f4e62c7a82297419e. 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/QM7MR2301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e1e5ee33b7dd9ab493a739d461835208b48e62175b705112bee20211cc99f8. 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/QM7MR2301384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bf05459249c775cc3b721f99afa83fcb68e9e2e0eb5c160eb22fdbe38991d8. 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/QM7MR2301385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1971db1ba9e3612eb354db38ccede6d581fb6e423e61911c35ca43222deb18d3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM7MR2301386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d34b15745c3113b3450c912402bf1a6d342d7e8e22d72549502194afe4e49d6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM7MR2301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96a450679a8776bf5d4adaa20b61d969b3af17615e848cd2903f858d145777. 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/QT4K32553431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfef94e0e2bf5dbb55e9e9cc2a52a57b44ba2d13aef283c0441ab46de64855dc. 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/QM7MR2301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd20a4633ac2d29e5dd3e1d12dc84036ce7fb872d8b18492adb67bf392edca6. 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/QM7MR2301391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9f4869410dbc48f9398cc7669c141f45cc632a9e9ab361f518a54e40792bab. 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/QM7MR2301392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09248cd94e060eb23c63684b03d221a0cd42c16c7de1d52384211cb5b62ecaea. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QT4K32553429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fbbb9ff9f8f9eedb8d8e814243114d10e06d0b9d315705f0171248673b57ab. 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/QM7MR2301394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4eba9005b5e35659024b7e364b4586c0057a527b9c03627398c9097aa8c31e. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QM7MR2301395.