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 0xd418812838785b70e4d9c7c6301253679d61f6320b715fc2dfc5d2032c21623d. 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/21aa3698-c792-40ca-b54b-f954824ecca6.json and https://artists.proofprofile.net/proofs/artist/21aa3698-c792-40ca-b54b-f954824ecca6.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 0x1730510a1b82d8dea7cab5d0fd5b34369567d7622ca10f57db05313be84d93a3. 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/QZ8GX1701740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b896fd79b68f3047206dee9f2c59becc9c075e4f22afe26b0d89ee45eb3943b. 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/QZ8GX1701758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc3bb1fc414c5f753d42947e25e2b50f2ae3abe8b5fe12ae40c68a5fb7d1a66. 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/QZ8GX1701742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76a7dae1c3aff629527daac1c125de7464fee1a79a86f73b57b926700ee848. 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/QZ8GX1701743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868e20fd14756a988661ce4fe4364cae15ce7f6bf2fd86471c82b585f176517a. 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/QZ8GX1701744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea5692918386a5a3ab825fd01eb72b806c90086fd5c903cdf668cd583db2122. 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/QZ8GX1701762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15325f9be854ed66c05fdaf8ec32e2f3fd90a62afccfbada4aebb24262dfdc6f. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZ8GX1701760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c074b63a711f6f70b00abb553923276cc09dc99fc6c87024409d6bfc8506814. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ8GX1701761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3904288bad742c62eadc26e839d24435040c23819acc6e53737f254cf4d86d2. 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/QZMEM2374572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2e6816acce4e5153aa9b5856f371a0b796fc236145ae3272b344d8e2f983d. 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/QZMEM2377162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96799b0a03b63b7f86e6c141a1611e4994c0216389f0b8a753d7acc696db79. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZNWR2339496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cf54ad8bbf807d127948ac170e53e01eaeda6d08fcf6e1b55fe7fa59a6954b. 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/QZNWR2339501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0236b10a8e8ccc70a006854a44f8b8d2edb440170c08d2eb935aa3f7ce7494. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWW2327412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbda91e875c012aa84ff8360f79916ea52c0e1886d4147186532f4c5d692bdf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTAZ2338278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda547cfff5e7d03fff17879b3fcff019b1d109772543ef4fa48c4fc2aa029bcf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:53:52Z), 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/QZTB32311657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197b72b36e795e4359b071008de55312e81a5dd2724ef45c25769eff37e9387. 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/QZWFF2390099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a6afdd539e05140d5edc8b3c91b14dd74ade1d9b8ac323729c71692a9b8bfa. 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/QZFYZ2448107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d57a42521949c43cae47eedaa9b7ee43584fc63a84e6d0dd0937f70e4b2e773. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:32:40Z), 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/QZWFF2390111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9f50ee1a14fe495157386b1585e625c6396f82750e6451ac131aabca90716. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:49Z), 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/QZFYZ2448108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ed126970157eb35004af975bc4da06a8c538c226c56d0e08fbf6701bebbfd1. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZWFF2390115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f945e1f7151034a4a2ddb6e0e73d6f93b79b89c88979d747ee43c9050cd2a. 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/QZFYZ2448110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b588dc0d954009d63711358c6b311c12bc771bc7f9c6a0c934f2cbbc4cf3df. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:44:00Z), 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/QZFYZ2448111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba080c9a91283eedd0c89774fc5d35300636a4a88d01ec1ac48139dd77d945. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZFYZ2448112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab2414c5fef9835199de7820c03ea61cf0c8f69b577b504c8cb53cb7f52b98. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHNB2472697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0224164b0b270f8421fe29d8b0b51f070a0255a00a339072d88a2ad1b1139e9b. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:56:30Z), 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/QZHNB2472701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ca3f95b6b34f5bc1c1e25579efc143f8d7071d5403a515c9572a5461ecde75. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZHNB2472731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6f9904a9154ff119ec702a29bf81c5dfd66ddb288069fccb16686ba50f2d25. 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/QZK6P2407755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab2414c5fef9835199de7820c03ea61cf0c8f69b577b504c8cb53cb7f52b98. 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/QZHNB2472697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a793dbd5df2b2e80f717046adc1137b5df1b622347330d5b504bdf66f37228. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNWW2444444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cffb59e001ad27c1228bbcfbb212841247b550cea60299cba76f879018fc65f. 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/QZNWW2444445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bc3120d9c0f7b1a8cde47f61b02d6fb389f7328e0f44da912b111d56ea8a86. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6P2407800.