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 0xc04fb10506e378e3760f5d4ad644a13c2a2c8574438188bf99d9176de8fd2f38. 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/da4b7eba-435a-44b8-b414-e9b2ce8fbe34.json and https://artists.proofprofile.net/proofs/artist/da4b7eba-435a-44b8-b414-e9b2ce8fbe34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'm in Zürich in the Summer & It's Snowing
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 0xc325cfdef2e78e92e5fa1c0d504989536b8a659be94878e4e8ff1f85632e4a2c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHN62558640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe834689a131a90a2d1c2dfc9ac87cd768fac2f196521be17317392d519efcbe. 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/QZHN62558643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda30bb48e68b7fe0a84c02088162346bb6fa5904363e664998d34e7bace9d61. 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/QZK6M2577554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf16e572ae4aac76ed1a7138b10315c20d564d58b69eba5507645f23be69f73f. 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/QZK6M2577564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c37f37b5ffd65f4499c728c3cf97c446cd0d3011a2fa503856867be93b9f51. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPLS2569541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffae05874e1c37ee2936bf64fc0f79cc625f510b4b47383f5d531f4c154a560. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZPLR2571002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd2bfed52ca943be53fe77296cc56fd394e4d209b468bc64747c1b124365f9c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZPLS2569542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42999392d4d006a88ae40b55891d781b43f8493019c8f908e11786081e1c5475. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZPLS2569543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350847be45d3c713346b978679ba8a603edf9588e787d7243896d0c3007c80a7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZPLS2569545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19949062f886250be2744cb8d7fe105114cd165448ec846da9d51dfd2c98a736. 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/QZPLS2569546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c47e9149b64c0ead92a45a50b3da2f6575e5782a9638815c3bbe8c9a9c832fe. 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/QZPLS2569547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb942f357674f8da1e1d712c277fce4d7d62dc445153209e0139750ea0c4e729e. 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/QZPLS2569549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6979cca83856fb0e0f76eb7880cf20f81d4f6d7bec783fc1ad178180bf66189. 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/QZTAX2510712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d45a18fcd538db51656ff95b618a8ddec9a9cd047b99c8aeb653bb29dee103. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB92524465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a98847de1a9d9853ca8a17332c7e073c6b32ca3ab7161a96339bba1746d864. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB92524469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a74f69d424fc905c1522727b63c7ef279eead276faf8cb1422d24762b8e4c1. 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/QT3F52559876.