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 0xe47cc577cf00b1bf74b842a9a2ad2e520434197c503f2c62be8579d3a1dfd6e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b189ca61-c68c-4e7e-86ed-daa2529b029f.json and https://artists.proofprofile.net/proofs/artist/b189ca61-c68c-4e7e-86ed-daa2529b029f.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 0x734857c05a04b83f9b87ee7abea3a8e4a2d57718d3335fd634c39266eb09d987. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES81910757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35acb61d1d280323d99b1246d85690b81f9ce8059c456d121214b82c67550bb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES81910760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243a4fa8a257fa90c6b11d4475d0c0d5ba3e734cda3a7d6b28505eb75195a46. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES81910761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2114a84ebc95c69b685fa77a0b3549a1ec1108ab5ac9c8ed1bef43abbac368cb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES81910763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e245c60f95b02c39313fb6ef51497b3816ee110ad46a83188847aa5c8965f3. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES81911701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4731ec5d218193b5451538aa0ab4dddb71ed4259af85f3268d84f22d87a26. 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/QZES81911702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10531437aeb1143baba2e108fa73992832c45e62fe9b4a12d674db61a1f97fbe. 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/QZES81911703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d291b31dca0789c1191fc4c991fa408afa2e3138485e0a0c10b871c28c43d9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES81911704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab21f659ec1a4a50d07f94bcb3c42dc761d44ceec9f4b63bc2520dacb961c6fa. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES81911705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa98ec5a339ecbc76ab73af6ab357404b5d2aa22271008127a61050e1e2c0d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZES81911706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bf1d7e570fe1ad7c6459a0e3e66fc5818201fd8e57ab60907f1877f0d07b96. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZES81911707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ffadba710be1e6dbe8137b318b93a577f559a6cfa2e66b34e4facb6e94ab42. 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/QZES81911708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a54d56d41dbe279e93c9ebd53a3e96c0e4ba7e43237f2bb873000e38a10853. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES81911709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7325e36458dc0d38c99fd211c0af4ec2048c9fe27ae7ca4e8301493c13c11f4. 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/QZES81911710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa1a5d19cbd2387c0cbae74c9807ab5a45c7a6fed747de2b15beb19315b54be. 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/QZES81911597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5d007493c0a7d46bdc48b5c5c600627146b3dbe5f000161704857b45d0723. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZES81911599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff3fb7d771c59c55aab52260526583df90f53063004f303bfa1b89e33d69c85. 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/QZES81911601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55b78a3381bf0bb7cecf35f51dd7563b08ee80d8fff03afe7833f3635b47b63. 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/QZES81911602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec975d4705f749756c91d540694dce6578fe47d0098844ab8731e86f0d36512. 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/QZES81911604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3b2ed7dbf95e95547f761b412791e2d9378bcab0c231e6547bb1746552d281. 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/QZTBE2438590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544311d699dcfbd25b948b6dc1c2d76365e00bced994ab811c81163dbb593998. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTBE2438591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78195426851584ac41b89aee8b7a562936434f99f70514c37ed84b18edfbbc. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:34:39Z), 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/QZTBE2438592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886949cd613aeb9abc9199dd1df5b9731eacf602f2c099dc9476e13af856e396. 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/QZTBE2438593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe596645bd079e109f0ea8dbe805958d92660fe48878caa80cb6015a108f951dc. 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/QZTBE2438594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32096d7cd208e9783851b8232d06f5a974819d53c44bc6cbfefacd518b043d55. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:43Z), 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/QZTBE2438595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee255ba76b1e8b1c7ee0d7776e06a3b6ca73539f7ed1b94b4fd48b20278ed9c5. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTBE2438596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180d606a6e5e047a63e181e941a48ce722e16c9d465e7bdda5e9dd6af48bfb0. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:42Z), 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/QZTBE2438597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa339760f9738f83a013838fe92f52bda31249131cc71fa476213502e4d6e3526. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZTBE2438598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61c4ebf5a259e158f2b0a0aa3f959548b2464d65f7327afd67d49c4777ba9c. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:42:54Z), 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/QZTBE2438599.