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 0xee74abe1d3dfe168eb77348da1f9693d8e9570796fa15fabb28d09d58e28b4a2. 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/e1332e28-bae6-46ab-88f5-77f1cd0f1118.json and https://artists.proofprofile.net/proofs/artist/e1332e28-bae6-46ab-88f5-77f1cd0f1118.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 0x9a4a350f517ad7dcadfdaf14d9f75bea450433ca253a85c9d019bafb62e2f3c9. 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/QZNJX2156658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3c6369ef16aac012105eb156da538fab5f98a167d8ec3d1f1f90f227f42052. 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/QZNJX2156660.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19353ded6634c6c92c64424e75aca45e74507d9269e1d1783320b9c4f3f2b0c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2156661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a85bdf7f25c7499c85662d09a41946d0092078741e4cb87933582c75118a8f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2156662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde51c3d638d7ba242faa6dd312a44b49770062b591c579b174cf82b67488748a. 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/QZNJX2156663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba0ffea1d22d276b029aaa92f1628dbb3fa669a5877c70d8865ab5c0d4fdace. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2156664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ff8779088c144068dae4b2f8ddeddef81c32607996e8aa0df56b950ede93be. 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/QZNJX2156665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5044e02ba00cf64ae2a7cb07500458b0bfa0adb503e1e08e390736b7ee82dea. 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/QZNJX2156666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb3523f581234b8cbc5d0c4de89d69211925e3028a7733bc041864503f17082. 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/QZNJX2156667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02593dfa3a5ff1562a8f6cc3a0ad6101a173e39ddbf90ba5d8ff3f8ff69d2bcd. 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/QZNJX2156668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5631a72eaae1f80d7b4424bf77b29cf4ce9262e61ab9acf18985eb9a2035bdb8. 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/QZNJW2149503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9166fb525027780a02219b5359e78167c0056e908f9dedc77929c103fc57d098. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2328838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07178315d66870855963beb4b069e6c1b6d4c029c0b6430e851149821488a3a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGLM2328843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e113422242f79cbf2b487a72aa3051654f9892cfe539379c9b8ef42ee4d4a23. 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/QZNJW2149504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e284586c2f0b6f8192c305539af836d44c695c370b909692815053ae2e885b. 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/QZGLM2328835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3dafd4f5d9af98ad3f81c8ec379e996f97437cbe86bf12adf2aac32ec2a18c. 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/QZNJW2197248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5414d712763dcc53c111824cb9c1e711734624937cf0c4d517db8472b579de8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZGLM2328839.