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 0xd6c421b7c5a9dde609cf6331347953d5a8f6f956d686ce0578a7376f0853edfd. 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/b5aa3fbf-b481-48cb-856f-d69108089604.json and https://artists.proofprofile.net/proofs/artist/b5aa3fbf-b481-48cb-856f-d69108089604.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 0xb066d17c842e52e419b00ffa54233ba83e95bc084024e9bc60cb2dc427042cb2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCACC1441460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375b167a99682e7f7c3b8dc7f5e2af980fd9e88ef6bfe25aedbe24b320b4a25. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USLZJ1792295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99f6457a8182f562c9352b3e2ec5a76876cb6a56f1d78029bb2cae2628f7667. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USLZJ1792303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cda634057350736aafb92fce09bad0be22118cd3140498c2ab6b121c045cd4d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USLZJ1792306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669121986698fb201745a09aa9b1ec77138bf85e63b43bffdb8ef055a8490fd5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAGE2239271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292cd1aba120a87f8d87bc6d94c459439885bbb3aaab83177fa5bbd8e3a9e8b3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZTB52276716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9556cd5e82c338256d90c147704336eb4dd5144f959da846f9e7bd0fc0b8377e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES52446474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149c1e5b784fa74d354106eb7fdecf49e2311bcc08d58aed86f9fb4f5f8f8e1d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6F2499014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b457c5758c5c2cb5285910d667f127dce9fb37aadbef294191b8fdfb9f75a9. 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/QM6P42453624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711994aa4919ca27aa8980b71bcba3eb8c61487ec80916056ea148a3a79882e9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZPLR2519996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa5d65c58bb251f2bed2738b80df1dafa2f02438e0c0b7dce87a3a5d816ffa. 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/USLD91702021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e6e30c776ff00220c65e947f5aa17f357ad72899f7c409921914ab85c5a145. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCADA1739844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f82592118d877c8ba5d5bc8edfe93ee8959376a09b63053f6d9225d7dafe0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCADI1767628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6806d1a873f30fd9b2c892e6727bf34277dbee69c4bb11b25eac21d31f63d8. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/TCAEK1961175.
You (Remix) [Prod XL Eagle] (feat. Malachiae & Keanu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7249809ffdadf6b20d2f91a4e700a36b433c96819b3b170a84930d0cd4a63c. 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/TCACF1568292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d97a9e99fe17e7d71d34986f4e3212232f80ff2e6320d1215cf43998cba5f31. 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/USUM71602259.