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 0xf98cd56e0cc35bf7d5dff5ff3db7913bb147d9f25e7a1917e268b91330955075. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13efbe0a-f35d-4124-9083-fb5a74ecaa53.json and https://artists.proofprofile.net/proofs/artist/13efbe0a-f35d-4124-9083-fb5a74ecaa53.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 0x74e57ee4f7a0c237585295509310027004d2eabd484f423db19408462d630f16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTVM2357131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b1780c0876515eef2ea127411c77bad83bc49584582695289cdb02102ef188. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6L2267993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0442485d2f1f7087d89c1be742f9bbc69cb46de92d76137d7bba79f9cdb479. 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/QZWDW2496318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1e93d748081a2bcebf7e7debf9c8f099b8fee3e8d5e04657e4d82a4aa2f5be. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDW2496319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a4ad4f25a86cafef0cd73af8d15ae55bf5045b4cfae4cde9315aaf704ec64a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDW2496320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c9770d010bbd15c702297d81b8863dff6ffb0715103bd2216df34a85e4d66c. 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/QZWDW2496322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abbbb11e0c2ee806565e991d77eb858f43bbc34bc267cf1c510a053d2442dd1. 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/QZWDW2496323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7187a64ebe9d8d25fe2e01067ed8d055c7c89a85ec4ec3097950b484faa96e. 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/QZN882514469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1242e1204900bb4fe954b62650a1f4c45a9ae3df97ffdf45568c86bcbdf819ed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZN882514471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d5396d26b69eff33701fea83a77fdf3184a40c5a274ff6fe8ecb44f652d1f. 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/QZN882438591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a0150a75810245d802a9b44548370623e3cd7556f79ed95305620537ada0a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWDW2465672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fde6684dfccffc9f3fd21f47bf0d59f524241e7a5a9802240440bd95e9abfd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLS2435158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a522638b87ed50885a6d9ac2bb4f4e2ac204c4a3f97663a1d4692777cc9edd6. 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/GX3Q92407466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c84d3fdbfe4e08cb0174dc6d449b99e53fc3a0e459b881cb413b94fe33df18e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES82460967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a370a90180a4e8aab3f3795953a36b823c5bc58fdbe400e07f121cfedd2f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYZ2435050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a683a5b617fff009fedde65595979a9d792943f07a02f0bd4d20d92e3da54c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB42348574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9d5edf210a581472ff454a08e5f6a17b7180ee4687bf104f8d46d768dc4fc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAY2377711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0977234e7bfe49d5ac845e86b0ce7a8402de48f28b49cbb5905544962a964f. 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/QZNWX2303615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6fe85266a5282e5abaed138b7bcca9399b75ae3bdc9923379bb9af6f7e9c93. 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/QZMEQ2316286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29653a5af6649d91ca114c1232dea1179d456b0150862666ed7df3f3728bf8cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQX92205301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98108b24bf74fcc1adfae5f05c8de97a84420f930aa799053e0c69bdce67eeb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMEM2297074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b695901a56e4e64cc87b5c33d7d8692eb9e695568416d0a5be779a791b64d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN82242821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eb2cda2f777df248434beb872f550d0bb08028c226d146a40c4f26028599b0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWR2153700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d18f8a4db88c4a2c194db906bbd2e339596ce7bf499ad9814b0828ff61ac17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNB2137618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec303e55c7558d1d33591037063367786fe8a7d33759149cbb4284bcab9291. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES72224240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6644bd8a3f9f442bef4649d1cc38d72b6994b125aa103158456a758651f234ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA72326933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168f7b7657792a1d28f17a7ce34b1f9d98326c68036bcd4ce3b19b34a2239d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYX2221979.