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 0x8c945c577c5c7f5470560874925776e37b315e9de6a85ffb1586e41a017c874f. 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/c9d82d16-728d-4aac-ab7e-a5f972d3d3be.json and https://artists.proofprofile.net/proofs/artist/c9d82d16-728d-4aac-ab7e-a5f972d3d3be.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 → 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 0xb676de2aba559be6436985ebd035939840440aafbf057009e6de20066a02af9d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX53U2363684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bc4a52e38166b5606f88ecef7d81fa14a75e6068be8dc10bebe5b4bb801417. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:38Z), 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/GX53U2363680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660dc6c4af3530333e6b639701a0bab366155f78ef96898199bc4334c6b346f4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX53U2363672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae26bc64e57090188b472f18458bdeb651901d64db46efe4739cf215e5938d4c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:04Z), 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/GX53U2363692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14c3dd4fb9e1d5203f7d79b25b2e68f89c6b3eb3fbe337d6e91cc7334434430. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:31Z), 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/GX53U2363719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b264e549d524768ce86602dd2600e031d2fafaf279b4a03203d28585213d9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX53U2363671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1da4ff1f6993b510cb8d75b595b002c1ceaececfcd5df6af768413808b0dea. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GX53U2363706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275f33b7f2fda6a2f7def96b526f2461356c0e945f0a99e4004207ac3789a4a1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX53U2363662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60242778df4f9b70254a0ab2ded6f9f2503b83259e6fe92b92a8a7748cfad843. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2363663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116aab7f3e26b0275fd3444f75600715bef09be5fae003dfc394c366b1cbee76. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:56Z), 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/GX53U2363664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6cdbc17703adf486f1e7b3408a3c89df33aae07e795295c5f5e404fbd9102. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:18Z), 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/GX53U2363665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b6fed438aed61cb7cf6b1d0b38569bf2f51d4afbe2aeed5f0921f26b9be55. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2363666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31240a85a325d9f484aad481e567f5f2fabb17f075a4327314ed61d370fe169. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2363667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96087e66bf14914d68fcf738b53f815dcb2adb1bd2dd6a7ab46450e777881fc2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX53U2363668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70abc81498d86c1b454e9283f34fedbf436262972cc4e42425d8ecf4ec5b3a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX53U2363669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87f6656a3eb73575471d9d3160abf0125abc3cc8603d56b9d4feed0464c8478. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2363670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8e3b18e148f0f227a9eee4f26e29d68c0f5b74a3d23cafaef892ff2416f3c8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:48:55Z), 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/GX53U2458800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2cf440c560117c6535c961da0cb8b0bca64e74d93a0a75dab2c1cc9d06841f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX53U2459306.