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 0xc533aa5b5757a7e8110f3019059a84b63c2f8493bf1a54219e5beef41563a8e3. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f62cde-9222-4a40-b309-94537159d4dd.json and https://artists.proofprofile.net/proofs/artist/56f62cde-9222-4a40-b309-94537159d4dd.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 0xc3639b8cd74d744c28d8307bd9e989ba924f09bd574ec2e1acd3bf24c114a82e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPWP02470572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c71f9ec04dff5eb00972e0ff567cf80f5976f07242f1d889c0f99bafe12876. 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/JPWP02470579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374dfc430d7814793e6f70edf083e80ba856c049899179154336fb0f91796ce9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/JPWP02470581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e442a4f027dd93c2a6df7e060b2a2be4cb008b3c968588ef1c1a64155d1911. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPWP02470582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b766e4b359e2b3db366b212f6976ce20334348d809da53780b753cd2c752f2. 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/JPWP02470583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6f228b151121af3dd256c05fd669d4714b2d84b35b473b2e64371fc3d37260. 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/JPWP02470585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f48588018b9f4061eca8f523c60ad58005fa05c640ee55a780241ef83b06cd3. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:51Z), 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/JPWP02470578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76f22fb38023339039c9e22e50cce58818542a84df9daef247fb72827c3204. 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/USA2P2332519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e644044eb9ea8fac681276d96f4bc61764f43a5093b8e052784cde60ef4e5a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2332517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340ee5c6ce334eca9cdb14a15397f65d001cbfc9951e619d3ab4d853d059f7eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2332511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2410e5264946e99ec213457d5c79bb74d284fef1424708117b11ea5d7297b1. 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/USA2P2332507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1dcc71035452d117d7935bc1ed9eb40a44f5bc5d4510603c686b02b6ee99f9. 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/USA2P2332512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23147a70a431d6b2640341f1d132da1304c643fd5e9e728f0166c206526feb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P2332513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3b5983c5179869563a8e85e0fffb9a75175e886538822068439fe2e71c0fd3. 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/USA2P2332514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f6bd9555df7dafd86c39ed9359c4022aed04e3bc9c3172f9dc4a8a20c00a7. 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/USA2P2332516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb53893ed0462744bd455c51cd6bca611062fcad918d0e60b7d720c7cb7d93ce. 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/JPTO01200242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f3091c75faed044ed757177cd783d4305793dcc9329cacd2f6808f02a26eb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPTO01100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78aea95d3eb0db01237ebecb51fa759c7a48067ddfb756db406e5d5be509442. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTO01101018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c3d53d155af3826321808f4d9db132f7774fa2d8213c507d2cf1188772f7c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPTO01200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414649088f14bb6305ca6f604a89d47c93daee0358b6364b934de68b01096e31. 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/JPTO01200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c06dd765b33cc9e92b38ddcbd7980d86473c72186a4a61357c18f85e6b124fc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTO01100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a5798787b07201bf92cd3038f6f604b4f7b94d28c9e4716a995ce8b3c40ebf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPTO01200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78aea95d3eb0db01237ebecb51fa759c7a48067ddfb756db406e5d5be509442. 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/JPTO01101018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f3091c75faed044ed757177cd783d4305793dcc9329cacd2f6808f02a26eb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPTO01100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c06dd765b33cc9e92b38ddcbd7980d86473c72186a4a61357c18f85e6b124fc. 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/JPTO01100401.