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 0x22c3b3a6dda10b3f8d75d5deb148c8340040824426ae3974d986039ea34b91fd. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc705dd-1b16-41a5-96e0-332aa60e46cd.json and https://artists.proofprofile.net/proofs/artist/fcc705dd-1b16-41a5-96e0-332aa60e46cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xf3cf5534dcd0af7b050360fa18336efb837f6f95e08105a230f837b3367f1816. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JP92G2205833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cc575461f7e0ab483ff26798d6b69ffcc59ea243e0d08d13c69b4193331d9d. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/JP92G2205834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f8e8119ec4192a8b6f25a6a9b9f1d4c44c1a30be3397b1e58074cf92bcc19d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:03:30Z), 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/JP92G2205835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8e63bd2523cc155209074f85e9aa08c93770fd9860cfb81ff0e616edad1147. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JP92G2205837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a905df1d2b750c33ca4f51d218c1a8c412ac287898a89d1873a83f878e3aa. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:14Z), 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/JP92G2205838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056655f441ee93672b468a1ec29c3021c0be396f99b2284f4740aa3a84f927a2. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:18Z), 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/JP92G2205840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4d098bc3080b19bc3aaaa9c7347995ad86a4cb5d51e06716d921504aa8861. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JP92G2205844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e1d9de2f63812f77802b73d53bb2913df84773366a0ac5615d1d39743c2ce2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92G2205845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd927b4bb49104ed4d435b286af14ee86d94bf67101ac9ed4daf22174a1c208fa. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:30:32Z), 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/JP92G2205846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11641038c26c049d27214dac0cc4edea6302b9440302578da06f9dc8ad1f75a. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/JP92G2205847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c8b4b3e1f3385ce9224aaeb0f0a654a4b3815598ef715dea55fbb8fa70b28c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JP92G2205848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf042462b1eab0064fa2c49428b7502e872d4607097c2166ca1a59fa1c2c02cf. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JP92G2205849.
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