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 0x257f056ccd6b46cd7ea1f26c4197e4c134921cd2514193a0a79ceb987fc991ed. 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/98276342-d9bc-49c7-a2f3-657e2807b943.json and https://artists.proofprofile.net/proofs/artist/98276342-d9bc-49c7-a2f3-657e2807b943.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 0x096ff3ea432a2be61132364ff4fe446d01ebf72b769996a4a2819c55af7bc268. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:45:26Z), 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/TCACN1662660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6ac357d3e916746fb33273e73bd72fbb10f11d9f8a00740eb37b94e2a5b09. 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/TCACN1662664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199fc30c126783e2df28c3cce2141e2c1d3eae29eedd4baf50b43c5110221570. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCACN1662669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35b9b025f15556ac3e6c7609145d75046dbbee488c92df649e28f868d3218a2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADH1783646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc493af357c0e5bab9c363cbae02673318b0e3defb6a991655d228f64150f12. 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/TCADH1782877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89b2242b11a64cb68ac22779e048db369522fc03e9c07c68e7ed2b45c00b390. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:12Z), 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/QZB4J1810463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1d58def0d4df2e95413409a7e3ac938318d78a170887af6641ade3fee3aa32. 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/QZES51952712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3be3ac931a103a14e75c9db8a5ea70d27bb78336397179ac82ca880b21dafd. 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/QZDA81991159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be1de98e93c51de4cb697a3bd9ceac1bf0491406fa1ac6a541b3b471d174386. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES91956687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd18bebc53339d4c73d131037605279d803095a394279f3df865d7ace70d93. 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/QZFZ21923777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c368d94f822518c1b7e909648fc6fb72f922876f145da10b830c505bc79d37c. 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/QZK6P1940024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a47d1c101afc03fec584452a399f83607cdcdfb539ef40d420908e8ff26ecc0. 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/QZK6P1940025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd18bebc53339d4c73d131037605279d803095a394279f3df865d7ace70d93. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ21923777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b3f3da9fa9bbdcbe946fc4477cf6a9bd3fca6c7a3d5d1166ff1f661f7c91d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFZ71901133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01af2f9defa39e8a1c27599d2ec57ded0975adec3c6dfb4bb748b86d38d76f0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:27:41Z), 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/QZKDK2233050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f994acf635908b69ecdc7117aacbb17bf52886f8c814c0039089ad7062c2e. 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/QM42K2257203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c84fa1504b813deec1725587ead308f4dd92ad8e8ed0cb9035e27fc9b419d26. 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/QZKDK2232320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb99720c872ae57cc561a84f9e6ad316f4e0353d88232954f4a66ad59eef439. 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/QZKDK2287619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2f1929c86bc5dd1b8e8b36c6c4781275d39ab34b908f04f864a14024b7e2d. 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/QM42K2223832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f18c680bde9f5fe51ba2e2e0184e6f9eeac0443893c71968e491fc21dfa3d7. 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/QM42K2240208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f144cdf96def61e65a07056768b6cc855efec1d335180cd79c0d3ae306225ad. 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/QM42K2231648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986347365d637800d24408ed7de20691bc2b7e94670aeceeace0717f06cf1459. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:02Z), 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/QZNWQ2295682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aa3cff0f06f9f3278d6720f4aa52e56abdd09356ef78c1b7b0a4ef49b66ca8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWQ2295684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154c36e08117eedf1c714049267362856428fb9b808c91e369a91d6fd67091c6. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:31:16Z), 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/QZNWQ2295685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f08e1bb1d789d83c5069535fa226f0c0b45b3362251d5874a46c284c462af03. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWQ2295686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7f09307e240a8c15c48116a6f5b542d53d25f011baf106e593d33fec3013a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNWQ2295687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0384e3d1b26dee4f408fe476bc32ba536453227ea1215d20ba12a9d7eb60740. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTB42332204.