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 0x08f783596312a0b44c9a6c056bdde9bb99d1fb40aa5f226277f129c81e59784b. 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/c1b26a29-f393-4f16-8832-d22e238dc1e2.json and https://artists.proofprofile.net/proofs/artist/c1b26a29-f393-4f16-8832-d22e238dc1e2.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 0x64b43a70d8328e672071db62059d9d9a6e0156d4641eaf68a18d2636f652156e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:13Z), 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/US58L1044005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726c420e060bddd52e8f20176308579cbb4c5336cc97e68d6d28ee1b1cc9d1d. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/US58L1044009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8926733fb9c63001ac52f6371d32d77fc6a4a0e882ce7cf2298f737093c9308a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/US58L1044010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7215c5717d714a38d45ace4d6f3eef1cefcca3ba2c93c6d50e5ee7a690aa90. 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/US58L1044011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f282b44ce73934580838a70042b79394fe61cc469cc1836650cd1b2950806a. 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/US58L1252601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae216c3a081e31cf159f8128961b6b63d64a35cfaf996994a5d210af78352486. 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/US58L1252603.
There is a Price to Pay for Freedom (and it isn't Security)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd521044745320cc3cf9b7517e6c6676a8c10f63487e4873313bcffbe76b84a1e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/US58L1252605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33fa6851037a79ea32404b22b024b94b195061574f15a0a846d30398629c57c. 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/US58L1252609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce37d3f8b7d17f657ac9477201eaf0f6c3c261d6db590cbe97adab6e606426c9. 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/US58L1252611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f67a4884d82380bee1c4f5eac407322343dfb0e8e14db01f55e23741cf456. 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/US58L1460502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd482980596e80f1c219ac632f03301d80633434bf81595720ceaa309fc394f8e. 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/US58L1460506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aff445cf31a7cd2009647f27ebc488840fb229d6b70c0339f0576e7afa4ab53. 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/US58L2487401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14daf7c2ae9007e6157b2aeda7d6f29ea004f60b54fb27902e04dc5a134020fe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:43Z), 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/US58L2487403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1675014f559ab3cf0a3697e04445ae2851fbd3a3b6cc7368a8bdab2aee53cf4. 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/US58L2487404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad912c44ffb46f24e1b315d9367378beaeb12bffb646baf2ab6caec34b3a21ea. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:02:38Z), 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/US58L2487409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf261cac3ce2aef62112d8d3ae97e1bc310e112781030120e0aba5c1126ffa. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBJCJ2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3ff5a2a49b021afcc9d8c75d0d2ea56021e6db44f25f616eb58fb1ee9d5d31. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:24:28Z), 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/GBJCJ2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0cf0a1db7949eb053b545cc4b2a7145531da2a50fc374a05d754074524f678. 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/GBJCJ2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8facc624a98dc8ea26618a320d2a60e3fd7485576faec4d86eae591f521f786c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GBJCJ2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a6ca233565ab03857230f7dc82c6c91676f4d14f876f0024a8502b1a9907a. 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/GBJCJ2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1d7d326d194637ff0ca6d0a35bda5b1bfb36ab28c15ecab1959f1eb07b305. 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/GBJCJ2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf29e0141a392c03150ef8758d2d6224a7643cac9dd9946f91a48a8edc8c1b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:54Z), 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/GBJCJ2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52909c6e6a063f7193c969dfbef6ba3e994f950861228ad45e1967efd6d331e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM9K31200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804bbf6abbc57c1324dd19a2cb6156dd16429a530fd19cfa5d8ca21f7a40d5c4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR13Z1700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7ef20233485c33af5830b71d9bf57f46bb81881c1102fbf797aaaaf3d49536. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBJCJ2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d9092dab74bc861a1aca8532e8ae82221db1d64ddc405a1427934572b60fe5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJCJ2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5e2142dff01a91c0c31bebf3f7df72799c205c19b527f70bbae0a44532408b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJCJ2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe639cd0c497a3915b358364acbeb66c79bc38a9308ab93e805a86ca7f89e8244. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJCJ2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe499909ab1b2c96b27917a4c4ad1127e467e6233aaddbf6b63c603ecea8e7812. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBJCJ2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e67b42be1bb27acaaf73eca582e8a033e97fa9788948c322d429cc479ccf744. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBJCJ2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8892d8fde4fc10ca680f801e843aa2e229613cda8b75f5efe3ed0973f20db2c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRHOA1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e67b42be1bb27acaaf73eca582e8a033e97fa9788948c322d429cc479ccf744. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJCJ2200024.