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 0xdd48c79e7fb0b68204038ca8b94e92e23c9e36660dc12eb1aded5256525378f2. 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/8d19dc7d-091e-4eae-ba0b-5cd7c37f8582.json and https://artists.proofprofile.net/proofs/artist/8d19dc7d-091e-4eae-ba0b-5cd7c37f8582.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 0x4f3d0f96f178841ba5cc555cdbb63e2e133ae2bf7441f62d5e7ec6cbcb60051e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V80136657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe005d8e29744f43bf78d61d137d3c7c629d5cc514d53e5868982132cbb745607. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR5IP1200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723d57f3508c722731b62201a7b2b307a1b7f4789acce20d8c992b1083adc438. 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/FR5IP1200080.
Melodia (Extended) [Version Internationale]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0bae3bdb01c4e26be113fa49a22fe654eefe4eebdd3aee587529822d13db5d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR5IP1300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c18cdec5547e059cd94133923e3a4e23564b12bc75e7ae36f98d9b1483485dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR5IP1300100.
Jalousia (feat. Fredinho) [Radio Edit] - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25cf823b291b3e1350bdbac7b18a54fbd5dd4153808c5adcccd02824a99b5a3. 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/FR8FB1905300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f98f44a4f55ba7d6085dd157a0959f4ed4c17c83af5be0466b1ff8d8c72ee95. 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/FR6V80059824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5585b749322597c0c859d94b06ec42d43a71799c52bf8bb4c8b56ee571bb7. 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/FR6V80059825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65051089e5d05a0323abe1b4287033bcd88956c304c1841dce71b881610d17bc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR6V80059826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b5fcf073cd9a86454bcc76657c5cc69a8474d1e709023b337add0e5caaca5b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR6V80059827.
Hula Hoop (Sébastien Lewis French Club Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e437309f5024d75d8856b1242e21a85f7bcc97e94e41186927ab549688cae. 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/FR6V80059828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e2f86d35886378da944a611584e5a972e6251961bd709f587178a32566158. 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/FR6V80059829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a005a099d8af1cad6519ee20d77f1fc6a69873f5f1c88200222c1040ae9ef3e. 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/FR6V80059830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d0f5403a8800bfcbe5009ec23a0a9205c4eeed4925a64103266095aca25b94. 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/FR6V80136618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6eed7a7d55b69ec7cd1ca5adc0f7ee3094a6726de1aa48b72cf4d19b9daf59. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR6V80136619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb60b21b6dd5708961f9e2ea598d36348058482a10cb80fe3888e1345862e63. 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/FR6V80136620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6123de5e56c694629b5a6b787a6470213cf5a839dd783a9845d76cb270f8986. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR6V80136621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf38890dbf27534d804d1c6ed6508262314012980ce3f99195d1e178b0189d75. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR6V80136622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09650e319b9dd7b1a008d1c315de1f6f223fb7344ce86ecf863dfe919ec3b8cf. 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/FR6V80136623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b5c8a0104387ed6e2a50a0f3622c975f2e901cd47c5ead8464845eea15f7cc. 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/FR6V80136624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc8a0ab7440c2916f94a08d685fe26c74ba4d05c9aa16b329298424530488f1. 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/FR6V80136625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d97be162b3aa89590b24421437fefc0d71bfa457ac49a2dd2557d96df8b68d4. 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/FR6V80136626.