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 0x498c4f49b2029f8b354dd50084e9daa063be96522d395b03d6ea0f44d1dfeb1d. Chain 2 (Bitcoin): anchored in block 953976 (2026-06-16T16:55:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2bc72468-eb95-400a-aebc-346ca6766a35.json and https://artists.proofprofile.net/proofs/artist/2bc72468-eb95-400a-aebc-346ca6766a35.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 0x31b33def72622da0f2dbeac1823c7a501e4d9dec65a1f7cb77d915ebb7c4c99c. 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/UKZGC2406161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4550b117abc6abf5273227b384951e7660fc3efc6dbecda1c9c3a73342de38. 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/UKZGC2406162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156ce8bb350137e40f199e0a252a87b75988fa9a1dd594f0b03aca6228313f89. 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/UKZGC2406163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a840e5ab47c21e6f80e61535f516db8829367df09edbac4aca5ccdfa5568e. 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/UKZGC2406164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe0bd4b6cd5cda2c7f5b1189faa6ad0b0128934e7fba305d30f49f9f435ea8a. 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/UKZGC2406165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72246936302c06bfd43cbaa7f6bf791866efe5faf0426ad04d20a7864ed2f956. 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/UKZGC2406166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2c3a9936f6464e65b31e9bc961c76b469470400ca3cfd664517e9248ef4673. 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/UKZGC2406167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe082538a951543df14220fc2ca08a5eccf3ae0807e58eed7f15bcb6bd6b4fac1. 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/UKZGC2406168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa9e1163c7ee1c1bee14af86e4806911b14a2a77e53e82ce57f98e70ee3f35a. 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/UKZGC2406169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d017d84cca843dbdcf7fa6562d3d61bae3dc8c14b75e3f94803b4fe9475a24. 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/UKZGC2406170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e2aaef4d298c78c8b2e1a3e5bd06ab88badf1f00758dd0584d922c02cc5354. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKZGC2406172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baea2e3400dbf30c9357ba446f2b40cfce25ff8a7813b6e0ac16cbc29f1ecf0. 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/UKZGC2406175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5331d3b0ec504bd57924c89cb0ed36d55e975f4235832090dd22ba2bac809692. 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/UKZGC2406176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fcd5c42340358750077956907d84e4ff78f5ae2ab47249182f3c38ea32aa4b. 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/UKZGC2309208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e507c267c7e5b70f2df9fc01ccd87265af7206d4cb61bc189123738571f28c. 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/UKZGC2309211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbfc8fcef50a234b9f011c1fa05efff62fdc7f9923ab4cdb043b341377bebc9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKZGC2309213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be99ab611bcd9063041ab260ed5857205ded29196d0b967aace60fa8fa792d2. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/UKZGC2309214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cba0581db2c18bb7fe6896b131b8819411cdbfccd4b2f65e3ed9cb7ad7c4d5. 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/UKZGC2309215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ad3c57cd0762862c82b27d53e255f27349afdc25bdd543646a79f60fbddc92. 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/UKZGC2309221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807ef618baeeebb3f2215bf325a84b4b5ebe94a5f2860054e9373a7bd7f7a4bd. 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/UKZGC2309217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e60c2c93c12c83c85d506ea37e17ec5d922e3c8a62f01943a7a34c162f7a6a4. 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/UKZGC2309224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0fec7af161946bbf8069c29eba23e1acc06bcdb1b3a879463eb63c1a1565e7. 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/UKZGC2309229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d2d3fdb64574c863c92c532c2cc789476c7afb25f393262e39d67eb4ff2dd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKZGC2309230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5331d3b0ec504bd57924c89cb0ed36d55e975f4235832090dd22ba2bac809692. 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/UKZGC2406176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e2aaef4d298c78c8b2e1a3e5bd06ab88badf1f00758dd0584d922c02cc5354. 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/UKZGC2406172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d2d3fdb64574c863c92c532c2cc789476c7afb25f393262e39d67eb4ff2dd. 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/UKZGC2309230.