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 0xd776befce4962992e6953cb683c4ab39763c7f22b0cc0e928a23700af4d47fa7. 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/5d69d2fe-d588-46ed-9499-76dfd90c7b84.json and https://artists.proofprofile.net/proofs/artist/5d69d2fe-d588-46ed-9499-76dfd90c7b84.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 0x961720b95de427bd4a4a3f31270f6f9212d674536fce87d6066136cd2aa6e757. 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/JPB451503500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3095f3b9a0bb80ed3d6df59ba995970c9ffc72b3ed12c2f106a0d76436f0c. 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/JPB451503502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726d852c5e48ecedd670e8e72b937d8089c1ffa6af73d309b553053af061c2c5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:41:06Z), 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/JPB451503505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2642f00433fe988038903199dba56c0f00bb5c546a4767c9c5e01443898cce. 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/JPB451603968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aa2cca9dd0795a21dc3c645e8e03fccdfc4fa8228bbcdf48188ddc60aa8cc0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:25Z), 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/JPB451603969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61773d7c8753201ed11e51806374bb440c069ba8d4076abab43bd822e5cb905. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:42Z), 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/JPB451603971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9a826f4b3823a389e1056633a2cc499a3f2e13fea3ca727c6e708273ad11b. 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/JPB451603973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe581c6a0b2424678ffb915f35c106320a70487889033e6a4718046be1cc577ba. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPB451704351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaef86c18395271ae6f363e1564c064246365a7afc3828959af3a59d690c8bc. 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/JPB451805079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad61a269a7c6ffa120227999c91a20bf5d1cb497780f60dc6374c1c7fb58da61. 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/JPB452005493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75126242ba8124bb1ffcdcc4d7b5eaf8cb05d4a166f3029f730d32ba462894a7. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/JPB451905324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b706c24c7d147e25443458fa3222f08c047833c7623dcdd5695850a09de0c5e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:04Z), 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/JPB452005495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6123b7c48aa245782b14db889de056b15e6ac6ccb5cb130babeeb9a825388f2a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPB452005640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af534d4e28ae18022af83269e764cdcf5b74396820b3e52fc48d4a35f1e9c20. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPB452205965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b01f07903b5e53abea530e1dda61759a8235abdb975c858d321511a335820ce. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPB452306291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb69c5c314fb60bea49f09b9063b68ef576ef563c3a7fd58ba83afdf9d9f8192. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPB452306287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba7cf546515a44efc911823d4d372203c86b224f594f8ed43df1aff081090e9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPB452306288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d44960a9788c32d7ea9986cc4388874c5472821566ffa1bf8f75ac0eeb76cb. 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/JPB452105856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dbb5783f4c9857cdc8cb47a23f5f7bc75be473dcc84c3fc9a748e459494dc6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:10Z), 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/JPB452105855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353c7b6f73c4d3f62ec9a741f8b38992016807cbd6aff10bcfe1bcd198b9938. 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/JPB452306292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104bc2191a278c55ca84475db9a31463fdcc721ed15f0e70a169a3fe18ef077. 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/JPB452306132.