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 0xe7d8bc79ef2451b541a2bf77fff0ac27f411f716d3ffbf030a2d4ed11a01b294. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/446a0748-c0d0-4eee-bb4b-d41b3eb4b261.json and https://artists.proofprofile.net/proofs/artist/446a0748-c0d0-4eee-bb4b-d41b3eb4b261.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 0x7e5a0bcd4e0b484eb199276636191b51dfcf7221133b21e6ac573be3226cc540. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TWCC32211386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15cf61d49f2bf16dd73cb58104b99b038c149697df90876325ce10f6402e564. 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/TWCC32211393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f54a1d82b9f32894e9daae1656afa77b4b6ca1f9ce660479b352a798d96453. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWCC32302557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a74fad4ddece4dafb5ab8a8800bebaae3ca3e414296884eac79572ef48762a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TWCC32302627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed545faed5d5c7e42bf43f4a558dd5c76cc0cc8874dc470c2ab805b2c0f2e71. 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/TWCC32321688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e30ae5739ef5281abae79bc4b8d06070bd54a611226968ce994b702e87f5af. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TWCC32420718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236cb2c9865b8e178023d5ae9acf861415a50faf20c38af911dae179aa2d3abd. 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/TWCC32501314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50b2d076091532a01bc6aa6ff3c8aa336be5175fa0bed189a1b3fc0b15c6aee. 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/TWCC32507384.
WHAT U WANT? - 錯頻沒在稿 OFF THE RECORD (DEMO)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb7751e22088f4027499f709b538ffaf0b878f55862ea5a43ddf2d437fc0ef4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TWCC32318445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad20e70625655bcbf65b5c3ccd5171d2cd5faeb1499d11c6953d96873865f4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TWCC32412415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723150a6dfa376c841d36f3a98232be570e5be2a21a097188aedcb15fbee4f8. 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/TWCC32402409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7954ee1505cedfa761d7f7fcb700ff401d08ffbd4cd00459fdaa65d60d46283. 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/TWCC32320796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce384ebc4079dd0dc7af299b280af1e4b8039bb5f6d300af181b3afe69c5a21. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TWCC32319097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8ac2e56cebb738c1f0c82170509880f05ad37eb7acb7660d38b77e27676c8. 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/TWCC32308719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40770d3bf41974861aebc90a2fe36b624f0008b6b640503f28abeceecb069520. 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/TWCC32305447.