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 0x03db588aa8e872977fdbf2b9a7766cd3e9be61281aecf421a43a1bdbfbd7a20f. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/121dcffe-8627-457a-813a-f5aa832915f5.json and https://artists.proofprofile.net/proofs/artist/121dcffe-8627-457a-813a-f5aa832915f5.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 0xa375d714644c6170f59cb6b5de4a0b545a875eb91042671f0d131d255180f0ae. 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/QZNJW2135048.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e50f374640d6e3042921f43c3e2a8e884d106847ee24c48ac255eab7086bf6. 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/QZW9N2223918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bcd9230972f96e749f280f501415742edfc5e3169dd410b9a82dfc507d1274. 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/QZW9N2223923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c0d4dff79a3da01a1ec476833d8f8bb49e19c3da35f51b485d6c992e3eaf4f. 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/QZW9N2223925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815befbcc7aa501df5bffc6a58e5f12a2d2228d9553b6b140d7ae58afbe1b405. 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/BXIV82485868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeade1b849b2d56644fca623e6fc3fc07a77ce0faaacb1c140af7de38870d7da1. 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/BXIV82280068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd941fa2f329e3714a55b1a0cbe88f77f4251248369893394f2ffb8efb4e5d1. 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/BXIV82210449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806810aae4e5d1dac094b65cca7ca4c52624cb1e63c7249b71cbe10a14f7a4c7. 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/BXIV82017439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528880e89254a0c5efa92e90d03945f559a299a1da1981cd9956afff6c514c0e. 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/BC6M22412631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28211b60b65b21df699be8f7572966d6fca9982bbb3924246adc1793f211afd1. 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/BC6M22412588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc517afd1bbccc4063e15e826265dc42e7e339cc99cb39d083bc5bcdc8810ef. 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/BC6M22412591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8245d014991120cabf8f46f558c7cadd32938f321083853fe466a0bcd903cc5. 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/QZFZ41912811.