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 0xc5ee0abcce893f0ef81c3401ca94db84c46ac72580ea801b9c567b9472f6fddd. 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/c2ef3ec2-680c-4a51-aa42-0bfe067688bb.json and https://artists.proofprofile.net/proofs/artist/c2ef3ec2-680c-4a51-aa42-0bfe067688bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Liu Xing Mei Li Lian Ge 2 (Wen Gan Qing)
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 0xc9dca1140a51caabe5c400964b3577ccdebef3a3a473cf089f94f919d2c62c0a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/MYNS11131755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b97a02d21613b63fcbcf1839533bf3665799dc9d68c7225c027536705fa3d9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/MYNS11131766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30930270e9d4075f7540c2b32b51321828e07d97bf022aabd25637d0f2a3f9cd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/MYNS11232654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aeae91065bb83a411c931c0af3f455406865cfa09dae8ee35c1cffdec08905. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/MYNS11333698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280f3caff6e4b3e5ac20028a784345c1dd7a43ead98da2b0f84d4ba56c8395d0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MYNS11333702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c64aee9711656b2bdc238dce9f7de199e050d57450972ba068f4bf3184b33d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MYNS11435680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc236743e027e990ff40299d06f3b6ebf48e19e96f87d6e92295cbf617ecee621. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/MYNS11637327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d33996dbb53cfea59e612ddb1d62e50ffad65ef73f54b41abaf39bfa6d226e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MYNS11839538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03a442cc3cee883306940b7d1fd57e0c2d40b9ed1378bc4416799cf00fe6532. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/MYNS11941262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d98052265ee46a1ad8a3d2e486c16ba0b200d3cad9aa671cdf274d387c24ee. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/MYNS11941263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c459bc312260b64cf175fbbe806b7e97486ecc30cb4c10750fffba3f7499c5c. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/MYNS11941264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba522073606df63216c06118213f8df62060e9b118e78ea3af9ab92a718736da. 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/MYNS11941265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ac873fb49acfb24de61c3bc6bacc6fbeea552f72003022b946bf74e7292ad. 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/MYNS11941266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45754a284e3241fc17c85bc5fe104ef024effd81ae6b9dfeddc554b3e6214ac2. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/MYNS11941267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e97fd2e37fe69813856c0559f07ea55cfda4e891252cac1a8274c73e295655. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/MYNS11941268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39126947d55c9495d39425e5c7d55f5c5c5314e9e783e67dffbf80bffc48627. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/MYNS11941269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760e83c9c38736d128f08bff5a96a831564d6fdb8b738e12ff6e67458df355c. 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/MYNS11941270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd45af6a5105ee07ed25db9ed30a99cce935664284ae28e523f19fcfddfe46. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MYNS11941272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf03e14d468f4f28c206cc2153d559447635bc67aaf307164f9493ac496ee26. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/MYNS11941273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9a2fba68a53834d3d04bafb1a24a3d146ad33285d8c5b28eb0d8009d0728ed. 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/MYNS12345566.