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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59fc70aebc7b7a1ed6614493c86515d1ec38d5027b7bfec94f2e317269e928b. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ffc51ec-8c44-44a1-9b67-c5b1a68b9b10.json and https://artists.proofprofile.net/proofs/artist/1ffc51ec-8c44-44a1-9b67-c5b1a68b9b10.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae3b8ff2e8aa86e5f0afc511813cf8f5157928a7e3f99bc162743d11f3da32a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TWAE32100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c494d323075831eab8ca8cfcd18d7da12bf575550fd589079e34e473e0af09. 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/TWAE32100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5164b05472dfd97e813d4be10e2dc5652d96c238ff1615cee895c1708c948565. 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/TWAE32401069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59c0ccc42bf31fd15e0602093bf469b50726381eb7b03594a1567a44c0caa9. 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/TWAE32401799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b497dbec5f386b5db44a5d3397d66f2d631077ff69f6e556f772bb7a6a40965. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWAE32401800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0bf23d67d8f7ec1793ef64d9e871588b5660b79f4da4d115319be22cf93482. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TWAE32401068.
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 0xea0b4b50cf03c96fedf61e4734bce3d92acd363563c89b976e71a74e41c2d2ef. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TWAE32401798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58cfbc406d38f91cedbfeba9c21df7b83a5dfdbc916dfa4e96872814fb133d. 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/TWAE32502239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e1eeebac2a47edbd9f92730c028da0e9c54a02def6e8c438183bee3e77dc2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TWAE32502240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe687a7175e81872636b2c5b8c318d1b0c2f5558fc8be3fe85d3a09d52172e5e2. 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/TWAE32502242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812c220e3d6dcdc6aa817f6c49f0411f92836e9069b7e607f85e1a3b8f4c3e3c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TWAE32502243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964350b5d984e2fffb690458178dfdc4b3bc64690b153bc1d266c9129a53f84. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TWAE32502244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60034b6fa988cb3bcb3aa9ce2783b91a8d7f9a1d4133ff09700bef8e8ed824ed. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWAE32502245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc0b6341e0c175d4b04eb2790d189c435bd8775549771faa7168339c4a0fa83. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWAE32502246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a50ca4505996ecc430faa50e08ed585228f18170d4a8afdb6cbd52c1a1275e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/TWAE32502247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45215304c81fe956202b300cede06bd1da864ecc7817f3c7e58713bd3e9d2f85. 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/TWAE32400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c498f637a4de7e1d1e29580b79528458e17eabb66ece7e7b0fc39af5e102ce. 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/TWK452271901.
一定到手 (feat. JAYRoll, RedLee & HengJones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e5c0a8813176029293c5f8e7ae8102ff740c334c2df9a0dc0a82435f6e68be. 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/TWAE31802106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a33b6c7694652250916b2eb19f592143efc873d267d9f6984d35738b719da49. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:30Z), 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/TWHM72210008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c48fee81f74430eadcc716f7df34bc48161aba97363cb0f29fbfc08b6496579. 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/TWP012264909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f73852c57c6ffe9b979d637cf94ef5d15d498df29d73142f4ba7ee01e48f48f. 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/TWHM72410005.