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 0x93dd0b3ddcb5600c5ad32debdce1b9f3f9160afc2d94a151688727c58ec431c4. 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/ab7f3f5e-e35b-4035-9a47-47185a6f1bf5.json and https://artists.proofprofile.net/proofs/artist/ab7f3f5e-e35b-4035-9a47-47185a6f1bf5.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 0x3c0f45fc584f642a51983b83f7dc1dec3cd14612f3653cb6107f9fb1f1b5b51b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:28:40Z), 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/QZDA81908186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bde3e866945f2284f36adf7e50b390db135fc982b0b1473ac84a42715168db9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTAS2230736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5069aeac475e6c31162d67215391cb1d3dc4dc35346a7e6266442cd4b7af8d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTAS2230737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c75e6397184ce8a445a0b46b311a3ee92723f574c355c4e4b7ae70a57f014e9. 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/QZPLS2257918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6224e20bbd85557add3993f82968580d1c01456ba84fcb7db9cea08b120238. 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/QZNWY2325293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc55cfdf84002c1567cb6e2f16c0c8876b3bf6f536b96a5fe50a758f83383116. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ32484647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72cce80a331c9ede2770a8ca073a2605505456a1987a20bfb5c1c9bc6bc62c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPEW2428058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e96a54e892e5e4735c1ae39061f913960db770c5a48c78a90fed97197fcc03. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZVEM1834526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c90977d70ca2df5fc1d97aa357c18a96bbac852b1a7536bfc5503a78ff0fca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZVEM1834529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddded7db3ae4ccc83eb8f28c1b729c761d1c9c7cef39cbaf91e1ca9087055b9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:27Z), 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/QZVEM1868746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49025486e9f19c41d5d108bbdc546de672935f677c771b5add83ade4c72e95e5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:39:19Z), 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/QZVEM2558358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f23e03531e90eff67735b673447923e3ae7240e57ee4c52bd8549aa386793. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZRP52270010.