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 0x32719f14a54a9ed1bd847f78e9cece6f8f13ba88703daa1cfbdc67816d63d551. 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/c82fdae5-03f0-475c-970d-2acfab742877.json and https://artists.proofprofile.net/proofs/artist/c82fdae5-03f0-475c-970d-2acfab742877.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 0x189484ddef0e4091f0c78a4012ff76bebfb53f0527c0a4b4bc1dd5deb282801c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:32Z), 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/QZK6N2099109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9e9967f9fe3d97692a01afcb6264d72a4ab298a44452d7e97ff2c9af8b547e. 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/QZFYX2177939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1889fb8589490e09178f94f395618d6d6db6cac3ce24015594da2ec7fe478. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEN2104828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0444cc6ba090cdeeee6c34ede6377ab3353f3b11f88df25ecc85b171583b4248. 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/QZTB72291786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea19b4f79507afc55887c8f8dcfbdbd573d94c1122fa123faccc7fb60fc1f846. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB72291788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe70ee4bca94b85141d0d41297c35708c7fb1434763cadd3d13faf7335d8b9. 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/QZTB72291789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4e95e255a3a334173e11d0bdd7ce56e463405377d6318b2a0655c15ae01e5c. 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/QZTB72291790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9105d4e495e988869c9794ad941eed46ecb65508c853877f695cb6593f04f570. 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/QZHN82366434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d24b5410a9b83832134f1253efafe1486aa30bb34be7d4958b1a69a3466310. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTBF2300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7891b3e6db40437817ee9cdf35a485d7ecdf5f238e16d80630c94afc5dbda37. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:20:30Z), 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/QZES82450734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505a05f1ec6a1ca2486e83079f0cf83bc79cf35857ae71fb290d59c521ff003. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6J2417661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf45218cdc4976b43f12449736b05e1f58d4e90ee7ec778d02d1d0ad33880c0. 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/QZNWV2430365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cc37c09217fafda2b58dbdae9a4fb44113d0ae3792ddb15fa3a0e57f2a1fcb. 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/QZZ7W2490530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83302f68dc19cc1d1c197ca2e0895a3844c553cdd0de394b473b49822d218bc6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7W2492547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72590c4289b654f21817435e35a49113c9b404a9e5e5cf248ba541ddc382b96. 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/QT3EY2439055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9dbb327e8ef9b7875936e094f9c15a1cc0f0bdf37166e287bf219996a7a139. 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/QZES92543624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ac93b83ea27f0e15002a4f86c0b9c013a2ea528519e9495b644d44d552a24. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:21Z), 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/QZK6F2504582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c75ee52af23d95d720e38868a4a9d5eb1430c5f026363087c0dfa67b14fcba. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:01:45Z), 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/QZWFQ2578560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5d6cc036a35bb844b1268d201c6f3b6131dcc47c619278c19a815c0eef0f24. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZZ7R2546464.