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 0xcef4be18a7c495538d1e6c66d89f871cf845c44dda8d725b7bba02b227ea7d0f. 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/fa24a93c-febf-4add-ac24-9caffd4cabc2.json and https://artists.proofprofile.net/proofs/artist/fa24a93c-febf-4add-ac24-9caffd4cabc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Untuk Hati Yang Lelah (From Romeo Ingkar Janji)
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 0x8b472a6a9e3f269e71754a23c55f38926260ee5e09efe12b143fd04fa4787e2e. 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/TCAIL2419884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0c4828a62833566b2cfd44b1e6a9db83e030222de05e1f9fe2d02d2b0aacd8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SGB502277426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc7dfd7a00eec8a3b4645cfd718fd2414db7488296b4844db8a44b283ba301. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SE5752122907.
Sendiri Tapi Tak Sepi (Electronic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa766fdc2d6d748840184d68ccad2b09bf5fa3bf889372c8b64ac5550bffab833. 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/FRX201803648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ab8b31c10c01813328f0adedb38864b4dd89f3ae5adbb0b268abd0b65283aa. 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/FR96X1909186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf268e7472f53057a3344be8757b4553e4884b4b326ad9af41e9b06b0727fbe. 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/IDUM72100426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df4751d2087f7b32814781d4c6ca6ee3e860bb4f96ce8f2de5075bafd56aac. 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/IDUM72100250.
United By Grace - Unfailing Love (Live Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7941410a39c9b59f42a474ea9197abed5ce4bd9534fb071f79168e9b3baadee2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/IDA142301811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a21ffa273a92f1e967a7c6a746894de166160e996806795aaf9701e0a7edb25. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/IDA142202335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edc1c1666c2112c31ecb69ff494d9a554f7e9327412467a714fcd80d9cddadc. 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/IDA141503979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4191bfc37a2d1c2a5946deabe935dc16ca9c7683e1f0eb4e29ac2745eea8c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/IDA141503986.