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 0x2912790ce96d98b9aab2c503051afc1d19c88737abc45ef500426356d87ae4ea. 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/c10083a3-c68a-45d5-8509-9753ec7bce85.json and https://artists.proofprofile.net/proofs/artist/c10083a3-c68a-45d5-8509-9753ec7bce85.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 0x721523267653941bdbba446e3de0180375856147408799b849c1cf8ae2bee0de. 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/QZMEQ2476753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd695dd7f2fd96423d80c79cd903b7bb8671a34ef2784bb6c360dc11caf9040e. 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/QZNWV2419914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9663f6b83ede6248f0c3e878a2532098252b1b77cd0abfcd7830b46a81fa928. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ782414335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c32cf67af3c09e3163315625adaee6daffde957ee4f06f7ab3d3bd4d3d45a2. 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/QZJ842404474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13648ed051658cd3cfcfabd835ae05974ffd090d31cf9318afcfca8e62cd6bc. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZJ842500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69dcfbe55e75688584a5b8dfd3774b6daa073bc8396655ea1ba618b0c061e4c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZJ842500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061dea1a92e4f1aea5ba138ab475f321254b338d34cb1f75685eb94bd55d1295. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZJ842500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69dcfbe55e75688584a5b8dfd3774b6daa073bc8396655ea1ba618b0c061e4c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:31Z), 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/QZJ842500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13648ed051658cd3cfcfabd835ae05974ffd090d31cf9318afcfca8e62cd6bc. 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/QZJ842500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa303e2052f6608a7bce891862addb852288d7f87b8a9ea6c149a49d992e3b. 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/QZJ842500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fad2ce623f72dd116e3140d2d7937736d305703c9866125e95c2e217659e95c. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZJ842500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d49ef616f10c6c713b903ca5d4914f1db0260a22ea0a58c2807fec6863d3b5. 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/QZJ842500390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5e567b820a926197a3a564fc0888ab567ca94ed5798430a773e309f06d4212. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZWFJ2435212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc78dabfb36a6a72e1b3e4b5a7743e6cf6323028d1156206351e4236dfc721. 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/QZJ842500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061dea1a92e4f1aea5ba138ab475f321254b338d34cb1f75685eb94bd55d1295. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZJ842500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf61a298a08097b6d0b722aedc6ff4ac628a7fed6de8c19304b8b2aa051b120. 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/QZJ842500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1445a84273c6487e19a7b39c6e61cbeecfc98fef0af6c9d6a41f0a30eb54bb60. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:09Z), 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/QZJ842500813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780335c7cadad8be52d56d0ce515cadcebbfd45c97ffec99bfccd27f8790e446. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:45Z), 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/QZJ842501230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7b6c5c4415ff27011cd8c53baff4f2aa174564dec5882d4a72c9266b9ca519. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZJ842501231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98941c694d35fc7bd72ec61ebe6e8840faed74af12587b4dddf8e3496bbf9118. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZJ842501233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa887b9a356288971d472ade82291cd70a5c80f642c422721e5aebb779ac3b479. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZJ842503444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8805c313796717747386f3e3527392122f77d4be2f40a5d26f9faf39c7f6de38. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:29Z), 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/QZJ842503445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f586a241f13ba2ed3cbc4e8ba8c25a74745f91e040edeeeaa86df39d0c42f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:39Z), 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/QZJ842503446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac7c0d1b7fe66a0018227a18a7dfacec8245558b63bfaaf1393ebf99721c742. 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/QZJ842503097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd972be38a983a320423807015a0a6c8d3b2e06de63b4dda0f3ad8f28abeab3d9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZJ842503447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f904db5492a4782b82d3ac8324d820188e5be5331c4c7b3f5df39cd608c689f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZJ842503296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f49f1f6b33117ec60e1247f18650304fbff78ca7704b0df4c4c016968eec9b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZJ842503449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f911a25fb5b3151ccbcf5fba50f7d82683e362b201566de8fdaa1857722f5a6. 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/QZJ842503450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43117967caa878227155616e9d258f22ebc2b7cccc982d9110ca8242630733d7. 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/QZJ842503451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adb637e035a20241620016f0657d983a8bda77e1dfe96284ff84c2bc16d380b. 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/QZJ842503492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e08856fc1fba2fc2e538e78ddc7423a1bea9425b2c3fa0805bfe3ec610a15. 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/QZJ842504213.