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 0x0919fd04f11fef47e0649e9e3a04601440e203ff460001043385c5d2d8c1a689. 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/a6b9c9b2-ce43-4a7c-9431-95eaa37dd008.json and https://artists.proofprofile.net/proofs/artist/a6b9c9b2-ce43-4a7c-9431-95eaa37dd008.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 0x116ff047d1774ceb4d67b337e7c0af712aaf1206dc17c7bf611c0721c673e55c. 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/IDA832400873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765a820df27fc5e7a5e2e8b5db71536f86cc18eebe505d72ae1ce3ab3ca79cfb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:04Z), 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/IDA832400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5cda3c27c47963454a5179002461e9e675f9ccd238aff399eb13407404ccd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/IDA832400875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10708443b3b3f63c6418725128c8fa51409030c63b72c9f5b22e2c8cd86c4684. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/IDA832400876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184c37904457c5d0ec31e0f399c0b3921a8b68d5f34351271e081a105f1a7e54. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:44Z), 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/IDA832400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf001ad9fdd1f5cab2b4d2a7fd8277194a9ef1cefa2c53740e06f3e8e419e5a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IDA832400879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8566a68ad89c0364e18cc636f5c174ff39e551f06b92b7350e86bdff381d7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDA832400880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01516a97ee9e4a292e369e5c7c76132334557739ce469048a44433d7340f995. 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/IDA832400881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5403d719da94a685eda8256dc5a17e43451e1c899e2522b591a123465fec398. 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/IDA832400882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d85155cf135e2b48dd09e7a624b8bfed49bdda08543d91bee81ab1f4a231a1. 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/IDA832400884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c348c1fa61590dcc835baea37b737d160f0b891d27aef8f066252a40ff39eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDA832400885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d74ff7d0688e87c9bbea74ac4d88d5e7fac09473b05dfbd730be720beb98674. 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/IDA832400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac9518b6978405981f35f8ce13dcd387b7e3789b9c50263d6c0f359574c14bf. 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/IDA832400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e2cafd7f8cf5bbef4bbbab25ffc8fc635404c1391a867e1e37188e5bee052f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/IDA832400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f14bc439289d76077b889b9cbaaec92af475a5fd1cfafb2170e6e466c2b696. 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/IDA832400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab599382d227e14fbbe2b96876893d914d9853a268595f0026bce88d6f18c6d. 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/IDA832400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca347ec2c0e749b6dc201c51e630834d55997160d6d6139039686d124a41944. 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/IDA832400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f93eb1014c60d87f90cd55fb1ac756a614e925b748369dc8c050daadef29e94. 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/IDA832400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b1a69e5e931cb6174ed7f7af525ce07f74cbe5012304413cf50966b8889fa4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/IDA832400893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f9d72f6c2dc169ae23ec368a7d14db62c233e7b9aea0ce6c1aaec8c1e7b1bb. 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/IDA832400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2dd22bb1507c61ee71781d921a8edd42048b5f9032c955d8cce4ca975680c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/IDA832400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850185a0bf58d6bf999484386a498733ada8a8a0423428aedbdaee99c9cbc144. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDA832400897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bad62feed996503d312485bcf894b7d84fd12c384690683b9c5a0b11b6a2a4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:49Z), 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/IDA832400899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541cd3b5000e165fc7eaa9e2ae0596add949fdacb7360740e6b218f2348fbcd7. 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/IDA832400900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf1c6b23ecf58ab9e4b7f143fdab6c51107be917a8b8a77ff6ab7b203cc03b7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:49:41Z), 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/IDA832400902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819862d2e7d53c7cfbd919eb1220e47dbe3425a7a060b1b115c4d9417ff7d96. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:59Z), 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/IDA832400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783a251168744e78cd2b8dba02e37c52a290eb8457fb34dc5980d3dcba2bbf5e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:23:13Z), 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/IDA832400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841dda0235dedfb40990982406be1d944019503a18f32d31fc42d3580eacc396. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:04:06Z), 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/IDA832400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009d8b34e6d55b2b3dbac8d1ffbfda72932a938d2af47b9d9e20efb10453c8ee. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:34:28Z), 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/IDA832400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3ae50ad683d478da63c9daaa81c7fc958c0700d888a84e8a6059302a6e7181. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/IDA832400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf388904640832ddb4e42c71bca7f676752cf8e0977ef2c64e1054ab7659ccd4e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IDA832400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81878411f690cf1ed41f489bb065318b4ef3f6d3a3879f2c001eab57b841daba. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/IDA832400823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db8bc5bb429b2df564a032c3326d456de7534b9873e10379c68d8e214b98cf1. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:20:28Z), 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/IDA832400822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a154fa2b3aea3ffedee1f8fd7e8328fabb4bd111ad904ba2c283d10198ba19. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IDA832400829.