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 0xb7dd54a3b712662b7beb0cd6e3b5e5bfc5259cafe87dff238f96231f42892dc6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78e0ca67-5baa-4ea3-8b89-cca8f450d69c.json and https://artists.proofprofile.net/proofs/artist/78e0ca67-5baa-4ea3-8b89-cca8f450d69c.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 0x50450f23773cffd825682a4dc0f2a63250670f2863cf76dc3c0223c1626b3891. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:31Z), 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/QZMZ92468205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94c2a4f016808662e49fb42698232151b860932569c279950c69be4dc714d3a. 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/QZMZ92468212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5398c2c2e660d92d67a421c6fc52ddb635d25e0b52ef4397593796a4e01f79. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZMZ92468211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2af74b773ab36e6a673fa08fd2c8f208ced2f0ba3d4c15894730185a8f0f850. 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/QZMZ92468216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bd8541cfa487c69ff21e1d034a5add69a61c311163ddad36430b6af38b5ffa. 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/QZMZ92468214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de0d394a123f0514e37be53ebf8cde9738fce9967fd38f21372f3cd407c5ca. 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/QZMZ92468206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb63ad567336efe94cc092a4aa0186a1472cc90ddfa3835a9bed32318699621d. 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/QZMZ92468217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe592659a25222076ff3e87dc46666775f2c9e061fa812fe255375c48be4e8de3. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QZMZ92468218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e6957c17426c8c6b520bc9027a0ad041225e7897027afe0f02f88ce6a71eb9. 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/QZMZ92468208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae458771fd982e7eacf17871492caaf8e318dfc55fc7d6cdf70b37c95fd73a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:48Z), 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/QZNJX2475367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6d08ccd26a48a74db0a103b335c78876f37f9fe255a9ff6e0983b49a2d95a6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:27:15Z), 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/QZNJZ2456198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607a04cf9332cff8fed4c802c6b59e0428588ad6d40d75627d01af9e85fb3dfb. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:04Z), 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/QZNJZ2456200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f24e988f5555ac9052a3f05137e7f7f7475a8f77e5014096ac24eb8dd410d67. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:36:56Z), 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/QZNJZ2456203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1077c16bffad7937e99156dbd6450c27431f47c6a6d9f37068486dcdec0ac05. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNJZ2456204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed224931711878f55cac423a21fe79a968cb7320d998489b0782e761ecd1389. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:59Z), 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/QZNJZ2456209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac9654a2048255b469b3577b226c43203c50906ce49806507ae99b905ce0978. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZW9K2473923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5de4e24fa0a6bdbe351a5055625606c3c5d39d85620b5864450d4851343e68. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZW9K2473924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1b665b44a4a56a65bd071ec0a95fe1e8fc730afb04fb8152c1fb69ae33736b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZW9K2473925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb45bd0cd7c7c4e91dc91d70fe0c25d0cee4f588c9781c58fda5958812cba5c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZW9K2473927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe127247490de105f32df784cd6b47cdeb6af4439f4ffb6aa76e2bd20151baa61. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:22Z), 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/QZW9K2473928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0303b209a567e0011a3e7f1d195799b613c574c7a4b95011d20dfb552dffc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:11Z), 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/QZW9K2473929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b1aaf366a6a929c057346c0c516ceabd0940c021e42edc433898a26346706. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZW9K2473930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe204df6b9002f099fbe533e347a348883d114e7453d9b0de80e552831a5a21e2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:59:38Z), 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/QZW9K2473931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa754044793605548163cac48707386d0af2ae571c0324e849cf5a0f91d4e11c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:52Z), 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/QZW9K2473932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5453780ce12e0c42ecc71265fd46c48dd747ab019c66a4339343c3983e2a549. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZW9K2473933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146940eca4cf73672ec5663261fc7c93644f8ffb4002c6305c9c62e4a61a2159. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:10Z), 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/US7VG2563990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490240d5d4567c239f5246693765809875916f9aacee2a9bc0408ef6856c2a0. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/US7VG2582607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0931b2f30b04d4602b1edfcd305e106be258cf21ebd7cb4c92e6c0274a075e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:51:54Z), 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/QZMZ92577739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88c158892c9d9dd9af0845f66ec41854c3442afc7c5a8f3511f58b45e598b1c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:20Z), 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/QZMZ92577936.