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 0xf30353156610337a6f492373741cebd48c30f8b24d744b64d2f4c116f8a45b6f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dd7ce16-1d44-41ef-8861-72e003831f13.json and https://artists.proofprofile.net/proofs/artist/9dd7ce16-1d44-41ef-8861-72e003831f13.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 0x84c36ac64b7b2623ef5983ea6d56fed6680ba019270db1dc88a69b8d36ace992. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USA2P2035409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7255af36133204d32a011737334869551da3a34942ce168afa4e789bd6bff2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:17Z), 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/USA2P2035412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab58113c59112fd428c52b682cd6d73a41247df7464be84e5beb4096937e9454. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USA2P2035411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a68f676b696360510500c83433669daae943d89c48de8903d1b75d0ade50b5. 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/USA2P2035413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f34774327201746ed39832a092078a7350709cbcbf65069954faf1f45aaa3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMHK2099657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886a9e23c7c649e35b3570bfbdb9341b9d0f650bb4dc423bf38f811ed77b1a1c. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZMHN2003250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e430eef7f68548265ac9496f5528791085ff3872ca590796a72b4929f2a8a3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMHN2052886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c3ab35c15c860459bf3532069d4db053243f9943293015658562cd6595ac8. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZMHM2096251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a38b845235afc5e926f72f0ad3f8f5eac7cc9bf887e510ce379ad0b1d05876. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZMHN2030243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb699a12004981abea25f1df334441a04711cf1621cb1c15973962e9f61b02dc8. 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/QZS632274862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bd47eb99757e05d2e6ede841d478f672b2dbb76728dec5e6ab7291f006f377. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZS642212304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9902a540a3da6f537936a608a86a4d9066c2236ff48e3eeb9493b14d0918218c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:30Z), 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/QZMHN2264019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d0cec3fda2c8c0402ef5e7b08493e6c484fae4ba363aa4d288e57fd2f5e1c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBAHS2200881.
Enter The Dragon (Are You Up?) [Extended]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c299aed9506e2da81bb17444d05e9f0697b032696d987431a0dc5d27fcef80. 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/QZMHP2381900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7bdc29301f5bac7f7e083ee1ffe63474eb58ec6ef588d50c65c0892a62c14. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMHM2393946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf49e3b459626e9aacac40c09e5443f71403f5afdbcc36b140e4412304cfd8a6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZMHK2328122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4250b1e217d6ec79b1584b45a1b5ec0d181d4d301adbb592173254862e98aae4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLCK42238927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103abe6c47edbc6952a666afed1df888abf76c355fd4865bc7451f0c8cc538e1. 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/QZS672193907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cfaee500fdd53c3f0d9ec9617af6d271dc6f59870373565cfa23d1783c2ef4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEH742332418.