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 0x5616792b447c1f2122610d34c3f72cfa8375cc7e4df536f23f6a4312c19e2aae. Chain 2 (Bitcoin): anchored in block 954124 (2026-06-17T18:22:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b6d28a6-d204-4879-9a4b-77a4331155fa.json and https://artists.proofprofile.net/proofs/artist/7b6d28a6-d204-4879-9a4b-77a4331155fa.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 0x94cf61a437872d7343d0527e08d000fc691e163dd660b818fd715a69f70362f0. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZVEM2399322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b645f309210d7538cc52a084a413d9f6d586465d55b44031bbd339efb7f44e. 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/QZVEM2399323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c8733b4369723037b8ab04fcddb5ae9d1788a632fcfbdd63c926afb7103131. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZVEM2399324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168b315ef8cd6819f3fbe2782d63011bc9debceafe4082b9223fced8f3c0bd80. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:00Z), 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/QZVEM2399325.
山有木兮-橙光《人鱼传说之长生烛》主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b92a651d5f367068d0c92e738f86881ad56f777be670a5bad86f55f63f02b5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZVEM2399326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d1c178177c9080703f4321ce5753a0f743c23c745fb4232899ec46b651be0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:32:16Z), 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/QZVEM2399327.