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 0xd5aa405380c3cf14ab5d00f88cc107acaeca3871a29447493c44b8e09b066133. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06ba3319-4b7e-45ac-a4ab-1de6d3947db6.json and https://artists.proofprofile.net/proofs/artist/06ba3319-4b7e-45ac-a4ab-1de6d3947db6.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 0x7dad54c7bff0287fef6a6640922ce6316ca957e8e091465e6c2ee02ed9e8aab2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62386871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22218cb27825344b1fe7fa475fee21fec5bd9cee472b3600d68abb8206e5d6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62386870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0904eeda925f2f2bc03a6e2f29cf494ce2056ee957d8239e55174ffd87550dd7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62386875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359f764e6f305d980ee268a8284ebcb479682b0001abc3661a7358af971b11a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62386877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7907426ef1fe47012f360009663f7c75053706c46ff38430b6a059ba3a42cb2a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEZC62386872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac67ed00ad7113279f447c8b35b033019fb5895afdc050fd7225f3ee5210aa73. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEZC62386873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70492b70febd1586e155b68ad3569382ed039a18039193a95d9d60f113cd622. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEZC62386874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45450b5e22e0e7c8634480a98cb8fe6ebdb7e52a88b8134b139ec0140b04eb2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEZC62386876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767a7efa0831a2ce66e79ae20fcfad622b2f02d0e1786136aa02163ea9ff8a0a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEZC62386878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a944a7bddd747bd7bbf00d2219ed62cdb03e95d70d74a52e3c9caeac44853f2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEZC62386879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e601eb86f60e578ecb1e87a7182140837e9c206f8bde0ae82848034242554a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ022290247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd38e3faad3ac32d6770c0c1cddb9d5b543e3beb7e03075cc261e957cec11a0. 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/DEQ022281644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258a8a460bd219b35e2f813e90ebf13f8a88f92ea147bca77656bb861fbcb3f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ022281645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5e7b0b4191d202de65e6b2b0db971aa5e6cf882d7c7ff96670df2bdb6e6af2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEQ022281646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d152f74bf1365e21e6baa4c35efcf4611aba04b1692e138a45d02bd4b1d821. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQ022281651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfebdb7845e96d72098ca5f769195f7f9390894ce74b000b1b53a19b918a6a55. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEQ022281647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b37f9a4929b5da191e46692bba423a44a22e3e61fc033b8ab699ec0751711c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEQ022281648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fc0248d325a29b0298e168366f8b34dcfea293d45b0610f06f66c067ac0931. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEQ022281649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5842eeb44e14a09ef44ac4b45bde5fe22edd8834780264361b9bc573ac127a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEQ022281652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22218cb27825344b1fe7fa475fee21fec5bd9cee472b3600d68abb8206e5d6a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62386870.