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 0x6ecac6997a7db06d57a913829949b0f38182e4e92d14d2845b475c897dda5e5d. 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/8706145b-627c-4c24-9f03-eab28936470f.json and https://artists.proofprofile.net/proofs/artist/8706145b-627c-4c24-9f03-eab28936470f.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 0x80ca430a20e83a734e90471f1809a99159211e5fe759e36c1402db2009cec394. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TWD951044103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd953106f0c3e67a92f3ef4863f8ca7b8cb5a2ab93b6a8383d4a2bad0752a7b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TWD951044110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48267ab99765ea949e7b94e71a9c65c4db841dcf9f9362c4a8549b269758c548. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TWD951044107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4442c54f16e2af23e53124fd6244cdedad51405c13d84a53427f25e63335a2d. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TWD951244103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319fb013fd531b6ada4d77d0d612e110f644e73906dc9bf11c64ece23083d39. 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/TWD951244110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783ee6e5f179930294dea5a4b9c262bfa5464ad34955d5ccf68723cd0988a1bc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TWD951244101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc973978f91476db55143ca5cbcebb9b97b87e42aae358511766455796ae43. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TWD951244106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319fb013fd531b6ada4d77d0d612e110f644e73906dc9bf11c64ece23083d39. 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/TWD951244110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec5da0e412f615d98e77e0b23d7e0d55200235559e697677c473d3ba379637. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TWD951354101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff2a48c7c3cc8363fad32e4399b2e448a37bbfd27add4a7da793442a494898f. 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/TWCC32320069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09af4c1ee33c62816a63af746dff05ffeda549b4235ddad9752e28ecba886af. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TWBH31600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24273e7fc8f39d67931e81f7b5b37c7d34cd5379df3c70092fcc09fad74857c8. 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/TWBH31600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb0b300801988f57ac3588fca114d5377b790374135794a2a3c6128b0e282e. 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/TWD951250103.
情敵 (《奇幻愛情音樂劇-千面惡女》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb72d5c709026f93ffebd315764495db409220667df7e30722a27d0a040b2ebe. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/TWBM11700003.