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 0xff00b233393312059c45b073c68512560c2a03761f4bfa1b1634a29287f94035. 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/e7ab9ecd-2d99-428d-b0a7-6dfacf5eed8c.json and https://artists.proofprofile.net/proofs/artist/e7ab9ecd-2d99-428d-b0a7-6dfacf5eed8c.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 0x1dda5c7147a15a3dc2fcef3381083fc0f9623bbe031b3f66184a2a47bad565a1. 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/TCJPY2314760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209bc517856462077e38e07d0441086d94f6890fb16a6949cba2f42d1f2be09. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPY2314772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e07bae3e9e1bc30733c78b0c49d374459aec7a2d26b2e77535054f833a7b2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCJPL2070092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8fa27e93a60078d8f7b22230dbbfb8082d1306ab51a2bb0c884930764a2824. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCJPL2070062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc4fc09e7f7460c746cdb16a2fd317ce0d433c033810b0bc5281d5d827b0670. 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/TCJPL2070090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca3cc2cee2fbced0b21621b6e7e3f8a2ec402c0c718785a2254592871611788. 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/TCJPL2070098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a5e9b498b6f8c5b6b651bc60e1b2188292f02e09cb0430dd061ce8d54754a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:50:26Z), 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/TCJPL2070103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7d70eef8a4c222cab191692306643faf02cd40e8f924495aae17978a3887b1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:31Z), 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/TCJPL2070111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f8d00eaaa19f05fa9006ff16d5980b418cf16c79b84c3326333de08b3ca426. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPL2070116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25636829727f5f45327d20d5b3bcf14e3afd561b9db35b11bbb8903c8c551471. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCJPN2045413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc0eafa010fedd69f62baa0082e9eb31b0b64eab2b3d22a30f673fd0927b3cb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:46:37Z), 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/TCJPN2045424.
Revenge (feat. EDWARD & rirugiliyangugili)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746946b7c8d9e7ef2c364f8d17e00d527b5383f2e96c7e873c0aedec775cfcd6. 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/TCJPN2045435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58352e7e38252426ab5e7387f6dfac612cfd5a94827d7bd1f67fa43f2dd905da. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCJPN2045439.
Sandbag Freestyle (feat. Amanemu, KilVSiK, Lxcky, 滅殺 & MIKADO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1829a1025ac61b654efc895fbe57fc61ed489b07d9ef7e948b8a43a4601318a. 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/TCJPX2396862.
Sandbag Freestyle (feat. Amanemu, KilVSiK, Lxcky, ME$$AT$U & MIKADO)
Bump Head (feat. rirugiliyangugili & My$ter)
Fuck You (2022.12.31 Video Message Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c12412bbc751472def2ead9d8b66c95d1b8af708ffd3ffb594b3c3d3c4771. 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/QZMEV2227276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c12412bbc751472def2ead9d8b66c95d1b8af708ffd3ffb594b3c3d3c4771. 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/QZMEV2227276.