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 0x45eb49e994da87b39c74c072d39e8dd00561f3e5e85afcce3a9e66c23792fbe8. 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/15912c0e-0c1d-4303-bf5c-4cc804090996.json and https://artists.proofprofile.net/proofs/artist/15912c0e-0c1d-4303-bf5c-4cc804090996.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 0x99388cab741e3b559d4d6d64c0fadd57daad5fc35dbd903f880ff95c83a45a11. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN62188531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e3c20ccc645bba6f321e0729605ba11455871ecaa4a89dafdcf96d4c451f1c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHN62188534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6289b13661717824da3b1daa954617d314dbb752df77a0ce88f244415c4ec074. 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/QZHN62188535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21b1bbc947222eb4477016eb0fe95f62f452c59b193db2eab033a30166e2c5a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN62187141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad47b8b29a96206a9e5f0366ff77aa682ab317365ce5362436b280bfc6095d23. 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/QZHN62187145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283b17e89bbde263d8d51165e03ab376b2f54a29918463add85293989b3bfc95. 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/QZHN62189217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492c5b5990c371036d212997a32762a01451b170d274f323d9e9c11c29f77a3a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:17Z), 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/QZHN62189219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4701e8d6eb96e501a5d5c070cd3394270d587d6639ce842f6cb0acde1502bfb. 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/QZHN62189221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09068dbc33cb89bb266d30cb4e2d6d4872df8a6ee88fae859586e2f77767d69a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN62189226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6ad38f120e55b49b66ef6236531785ed9178f61e2d59e8c71ce00cbf3e10d7. 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/QZHN62189227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a0cf30b527859e099c626d57da5fea43fdfec94e85e22589ef947ea457beac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN62191752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc062e53e0684cc6daca029ea9ef4003fdb2ac40222fe198e96235fe004a6f6e. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:22:43Z), 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/QZHN62184513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb5b146dd4607133a96284bc581ca0da95ba3c11e85d30c9f4f63eb581649f3. 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/QZHN62184514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bad70d79075c4c25a781dbb4ed1d86f65a5bfbe0ae5c2fc698f16740ef3a79. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:17Z), 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/QZHN62184515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5596288c32bffdfa8983c89470cb5cc8fecf6ff0fbbf601fb1d3c18c88cdf1c4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWT2138043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98018da8db07619a8025b40ee836e39a923ea07a5aed242568717f66342215fe. 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/QZNWT2138045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97172d208c5101fe6caa56a797a8d1eefa971a0d26057713e946ec3b2fd4d0f6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWT2138047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218ccb8a2d3fafed794139793f5567280cfdacf08fe2f3c028df6837c477644. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZNWT2138050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c082b87de5030758b3a5c9c2f77262ab7b0c43517502c29e56f0f7cc90af55. 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/TCAFX2144753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16a0f80e07ddcc53134a153fbff237662f1ec61d61f3a2cbc01f24db36b503. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWT2416250.