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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a96a37f44e874a67c665a1f7904fee2d7fe46ca6aa4cc9f93089a4f49e627. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9daca4c9-ef43-49ec-be28-00c75fb31f5c.json and https://artists.proofprofile.net/proofs/artist/9daca4c9-ef43-49ec-be28-00c75fb31f5c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a43440d376ae1f6484eb9bca26848d80c51148449e9ac050e6b5fc0ba764c1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZES61805765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c5c7586c587473b950b291f7eadde5d2e7301320d14d7343d2bb64848af207. 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/AUXN22083412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb41ac2822fd49cb5bde649302b7cf1ed8977d3b878bfa26346b95050ff427. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/US83Z2338444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8b830522fb7cbfe26aed3a1191341b876f1e543f54495823d1ba909b5b41c6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/US83Z2426433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860e8b2fc54b43ca3d227d6ab8419888aca04bd2af0e6f5ae79b96e352804a4a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/US83Z2426434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e7d65b2bc075e86c8f44491cbeec1004fac7d61de9293886f672b68ae766f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBKQU2506808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dab55098685ff6efab120898ba6282e1d1b9d1edf49825db379cc494a62cfe9. 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/US83Z2528063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1c9609465411b78457b990485d75a687a475fd3bf39d93c89bc72f5fc227ad. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/US83Z2528061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491195e6019dbc0eb45e3963eb79778efd76d00984d43f6effed94bc10603f44. 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/US83Z2528062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0067721e45eab32d8386e0fbf29e766aca90fda6f06103dfc829d8a07ec07cc. 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/GBLV62026020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18865188b1826756f4d446af917591161522a1a7623cb85c2839527d92fb6b7. 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/GBLV62026018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c9329b6acdfd019acf1fe2a71d75e2784099ff36e1c1ae0f5bc6fea0c09541. 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/GBLV62026021.
When U Clackin' - Andreas Henneberg Remix
When U Clackin' (Andreas Henneberg Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aed22a622a3ec2ef6c64978e2697ff06cecb636e9342bd63deda5c570d647cc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLV62026019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6170aa197d20155b6d63dd75bb223f2870d716ffa2d31d26c440619c318df5. 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/QM24S2008330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6170aa197d20155b6d63dd75bb223f2870d716ffa2d31d26c440619c318df5. 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/QM24S2008330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89561fc3c671d540d9e3dcf859ef9ef3581c271bdddfd4c2ca722ce452f338fa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2338445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609b31753d2cf2813633ef26978b595c69ededda0198216fc6ac2cb61f938083. 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/US83Z2338447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb41ac2822fd49cb5bde649302b7cf1ed8977d3b878bfa26346b95050ff427. 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/US83Z2338444.