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 0x55485d594c8d712c6addc77cdb90595c5244c837369f95d48471843eab2c0dee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8df05e3f-6c6a-4e16-85e8-0aac5ff7eacc.json and https://artists.proofprofile.net/proofs/artist/8df05e3f-6c6a-4e16-85e8-0aac5ff7eacc.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 0x1826975f29bae6c5bb63967cbed52358d2a0b03f2503b11170633929414bf70c. 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/US7VG1977300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e205742a289df8c554bf5b2962c60020d9471fbeebf42532167244d8addb64e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG1908714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc02679767e48ea0426e3f545ab4deb5c4eb7192b6bdaa01cf52406cfe09a81. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCADZ1841776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680976b35e84dee7ff2ff753b7ed9c2c43ec80a579b9030413f1ea850663ffd2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHZ41917712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c664192873f148a143f470d574811757bb3cbc6e1a32943ef4b0b5ade252d1f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHZ51952165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1826975f29bae6c5bb63967cbed52358d2a0b03f2503b11170633929414bf70c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1977300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bc22597d5c281c866f046db86b941a75e02cb2d09175724fd54ec91369e01c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ5AB2168127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0dfa7649c057c53f33bfae3bebb501744751fefc13e6039727fb8696c9ea61. 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/QZHZ52119359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c6899261f5d070fc408cde7085aac67118efae97462f8dc377168b3f5622b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHZ52119365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda79710deb8d14010d74f4d570e8e3d1335b03a5d01ecc2bb7ccf2d5fb82faea. 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/QZHZ52119362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e5fcb84278b676befbafd8197183ee51c850147032bb5cc86cfccbebe50435. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:52Z), 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/QZHZ52119366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c06e63dca85c8e8e1c40f6bd941abbe0df69d52f750607e0cea073581db92f7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:44:56Z), 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/QZNJX2292788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5fdc46ed9fade6b2452cb4f4724b510aa3c2665e8929124e9e00b058620512. 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/QZNJW2392144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb753c3c1b22ca489322ba056db3033ccbbde8195b754f840689cd3c4afecb1b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJY2393673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a25b0b60f81a1d78b279af12065e9325748e80c92ead822753ff14c14bfe5d4. 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/QZNJY2393675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2441a3888cd91b4cf69c327d4ccacefdf024e0766094e55ca00ce74e22b73c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNJY2393678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c96318762eee3a3d01c5f383ec011cd48305a15b81780c11f50805dbf46eae7. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZNJY2393679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf130b615acccac179604599ef4c5ff3f36b1e6257b9cf65eeed598a9397a363b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNJW2403105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6a459116e270d76be6398f324efc621a2c2b050aa2bf0fb00b4ecfebce3a4. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZNJW2403115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb4dd38a25f0ed54c73bc30013ccf2e56c9a8dbf028e2da709204979e86b138. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJY2572292.