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 0x668e6810951ff8c8c780d93471564db9a591b81f841bbdb041b84e7f94c44a09. 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/52a75bcf-7511-4c36-9aec-cca2bcfb4c07.json and https://artists.proofprofile.net/proofs/artist/52a75bcf-7511-4c36-9aec-cca2bcfb4c07.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 0x175de69082fa08cc7503f90ec36ec1e233d8bb96f61c4d6352d53d92f3e3e6b5. 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/NOX9X3436201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d576bf76988aeefddc4a0031d48a6e2b1f6ef43ca0f915b0424f5142da9dc1. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/NOX9X3436202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27786c70ec0a015261e4fb111310a30bd246c774ea79a80ce9ab2e6fa429f879. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NOX9X3436204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896741d3def8d9aca52c3ec8f6fa3a1ec79293913ce5b9baf01be35bbba49efe. 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/NOX9X3436207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e76dbcd84185aa33c5a5f24855ad711111dd83c0e3664d064304d9e6fad481a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NOX9X3436208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c9a57a10bbc7518cb5db8280491b5cf05b6ad090192e77543dec9b4a3c2deb. 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/NOX9X3436209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3229e55e0673d3c0a4399b8b9b0744cc131689e99306a1aabc066b7842e2ae7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NOX9X3436302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db7efe4e6746288a180162a00d2d08f4bd3498ffd23bdbf5a4470d12b9e8cd0. 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/NOX9X3436304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27a23c62fc4cd2154d5b8e1a50dcfa4ca952cfc8eb19ea6b07a87959caeace1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:36Z), 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/NOX9X3436306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55573b51165cd2924519f1ed21eb3ae8233566952851bf394058e445ef3234e. 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/NOX9X3436312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9827225104ff24e7f87c68879729a0b83eb8bcc18a6b06f7c47dadd45dda9e82. 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/NOX9X3436403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338163633064fd8866b31c7a3d6e982f231933c59cebbd9e15d8f668c9f47a56. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:37:22Z), 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/NOX9X3436404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2985dffd9a64a60f6d62fdff43b37ff4efb6c0d087b7145ee563143639c60441. 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/NOX9X3436501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4722610cd5af1f172879eedae48e0019cf2c524faa72292880351c64ec3159e. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:30Z), 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/NOX9X3436505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4d5460607ce4595c24170ef3c1ee3f754c1741ac2234c837f1d3a265521163. 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/NOX9X3436506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f519c6386f4e6e1556d6b15d338a2423e82805e216aad46579c533283d0ce5. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NOX9X3436509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df28c0e9da574e5a0ea38a61216796aefa2761c194cfdb4d0e9c986c08e7a17. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NOX9X3436510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d6d1aba1fd24194bf3ed0395943d1757085585a68ca6cf91a28cef467acb19. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:21Z), 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/FR96X2366465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9316bab0244ede8cddcefb1498d5c2c0fb9cc0a31c74495a07dacd66ce18b. 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/FR96X2366468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d4a8677d5ed077ea301103ae97a5ffc0e3224e709a3c6246b977da93af8416. 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/FR96X2366470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d0a9155fd5336b3e443bbecf2589a2337a7aecebbe7bbb6c3354d24656981. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FR96X2366473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f08d6336950c2ca2fb990a2a239a00013804a472866e6e2f1004c5f0bb326e4. 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/NOUM71001485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86f3a399cd6db1d3dc9cbf36444906dc9242db1b02572d9f1155d2935564e4. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:13Z), 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/NOUM71001492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2b264a12c5c7a8aa03ade2c240ae44ef887b49914f135c3391c2283a26e31. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:25Z), 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/NOFBT8846516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ffd3308a2be5def6efa236c7b07fc8008c79b07b18b44ffc4e87c5c882d970. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NOFBT8846725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f954c89fbbfa6a0d44e1aa7d1833cd9357a7cd200e4fd217269b4b366012f2. 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/NOFBT8846493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81efada188b4d1c86439cc767adfd30591a58dd687138faa93ff7beeb988793. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/NOFBT8846495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f731038e1013054efe7ad42a723ed39a9be4f7c5f14bd2f14d3a47ca63e6e77. 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/NOFBT8846439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0bc5229698d8cda886c657560b383d302b2e684b7d7608438a4e906a1f1d1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:42Z), 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/NOFBT8846423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c35bedc24a83db622c8b566cc9da8142765b7d8c8b527887d6e4c6d4c7deba. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/NOFBT8846420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4b22eddb5a5464c2f6a7100c92fa5dced1bac6abc2dd771b782d7cd1c53935. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:09:33Z), 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/NOFBT8846421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f98b19c3f0d2d525265d837e108e4aa2948544aa57b99d2a2e522ae5e06d36. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/NOFBT8847013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e755bf773b425d68c3e2bbc2483deb2119a23058a185f6095826439e2832ad. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:37Z), 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/NOFBT8846724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb29c65d0f1da191da906dad38379c0f1fb08fb7549e939aa465728eb90f2757. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:36:39Z), 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/NOFBT8846424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455fb0dea6d32bc89e396257c37ad6f942040a596920d773632176518e52672. 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/NOFBT8846518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb5d972bb39abf366408fdb3833a88b017001da40ca54d507ce6144352b1e5a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/NOFBT8847034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6909c80334773d32a3811d2bc8e3d7626d18a350198a051283f06d442bb872. 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/NOFBT8846442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2c4883cca89f623944caad4b87aa8aa35f485867550d1abb442ca9b9ae9500. 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/NOFBT8813544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0451d58d05600dfe5aa101496a58698736b65c0cf07ec83311b8c89737ee36e1. 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/NOFBT8813545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6ca5641f2c93dd24f1e059bca4679c829c4a186aaadea939e7c247ceeae64c. 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/NOFBT8813546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4669e7d86b4634eb5ab41bb7ada1b5b945758fa15ad2bc68d28e219bc94e0ce4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NOFBT8813560.