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 0x74fe1b49e0affaf1cf690637388640f0d3361742c4e0b733ff4f75cf70b468ba. 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/aa74e0b6-2f77-4f94-a84b-c3a3ba26adff.json and https://artists.proofprofile.net/proofs/artist/aa74e0b6-2f77-4f94-a84b-c3a3ba26adff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tri boje zvuka (Live at RTS Studio 8, 2016)
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 0x6822623bc16143f2e86c503940dfbd8476c4b1e726595c1aa1c3f5f8c3437e18. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/RSA181338680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd587f79182254e0d670ab6e07746cb57e8fa2fbcf1d5fd28922ef6bad21f239a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/RSA181338682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281dd4bb10004c773ae187eccb92946a5b73e4a029c10d12325424cea2681e7. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/RSA181338687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4df27b0255b9b2417e701209519ccbc4db2a5b6a283adc50a79975f13787ff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RSA181338688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf61327247e65724ec8cd286e6ebeffca99fafdf5002c4ef41928c76285b69ea. 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/FRX202265690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d72ccccc567655bf8d35a4b0ecba281e1dae773fc2e2d283cefecf4ec01e502. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:23Z), 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/FRX202233742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a63c703b90a4e8dbd5b5ef9d982d524ee67bb63f29a4a94a404e52775856976. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX202265692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8aadbd38398ddaa3f0660860a3d805cd4d29134e25aebb17e19510c64f9a6e. 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/FRX202265693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40413a36a59cec275c9fc7a34e641f4e9ec9871b95d8042cb03af1c6fa541248. 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/FRX202265694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08be0250a07a23eed937059aa178108d0bf3c38a60885ddeceb50feb89c765f. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/RSA181341228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7414c46908833a8b9b1e64e7de40ec6b662a5c72da2a9072a5db8aacda0b88e4. 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/FRX202265695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e1e6e03180a279333171b57be7633a7ba6412c087e7f9a4b6e83f307b096c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R2360165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79733ab9b4935b36c43bb3285eb3f2df1399acdc4e51636dbc273ac8801811ce. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:44:31Z), 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/FR59R2360168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4bb3cc55f7f8c3f647a1d28a05afb67b782bcc413eced34f3d74403987c1f4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:07:36Z), 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/FR59R2421058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b2ca3f008c8cd82fb9177df236da2c24b65a4fbc2207ce041b7e3e3bf1a26. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEKB72503541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3fda03097d777e2deb0f391e80a9e9d105b5fa4fb5adcbfd202ccd1841f030. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DGA052573730.