1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x54ecbb2388434cd62a3e26bd058dcbf05c3e5f1598de84f772d4d05c704b8321. 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/70ae687f-63dc-418a-8fcd-7f39996feb20.json and https://artists.proofprofile.net/proofs/artist/70ae687f-63dc-418a-8fcd-7f39996feb20.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 → block OTSBitcoinBlock must exist at that height 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 0xcbbbbbbbe7d553850b7cf243f5e235564f91d5022ccde62113da4e291a6c8cb5. 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/QZDA82297915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab43829b0c4c576cc71de35dea2523ece9e2f3acf2ef7db5971aea553da0685. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA82299773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1601bba7ab207340cc040a7ced37425425265402127d616c685145020e4c87bb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFG2376163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0896fb47e5b9e7b027922bbf941a1ceee7843195827175c19f379154818960. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWFG2376164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c335bdf0527a8c20e3825b7ed3f150cf6b025d4159bfa94932ac6f8a56c7438. 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/QZWFG2376168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a79420dedc114fd105bb643d8ff23dca96b36dd29f8e8c05cab0822aa06d9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZWFG2376169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259a544ab64835e4a1ab80c25a832ad7129f9d18405b6821d2808d8e8b74f3c1. 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/QZWFG2376170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb5c6e3166a79ecad52ddc426599ea440270f3725594f3802fff714227c47a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFG2376171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae805b082f654b5778d4ba7b2b916f633e7616c10e81d7af4a82b8feca3b3a78. 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/QZWFG2376174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b11383257de5319a450ac7b030552ab5a12c7907be54281f64002512055ceb6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZMEN2289056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be43e1d48d4c26ed164e4e7e39043f57efe5e4932ff2f01a5d5a66cb394871d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEN2289059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589e90dc6abbfc08cdf32c14a31853cf1944ce71257d13a5733ed2859895ca52. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:47:03Z), 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/QZMEN2289069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfc74fd52294507b2cf36e93c26c1cf543f8febb9b923b26284820dacfc474f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFYZ2335954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68134e31b0e55fa98c85428f58c021d4963094d8ed0ff99dccba4eada78cdf77. 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/QZFYZ2335964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3955d70648411ba27df6311ff080dc865a71b818896b139420aac7f0696bf74b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZFYZ2335965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46485cf17375a0a36f9be7847342080fdf0bfbffc2f307aa6639c354e86cab64. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPLR2146393.