thumb|A Hindu gatekeeper at the Srivaikuntanathan Permual Temple in Tamil Nadu A gatekeeper is a person who controls access to something, for example via a city gate or bouncer, or more abstractly, co
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 0xee2d9dcdf78d0934553d6ed060d6be304d315f663626ab1ed24f9fd5c54962e1. 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/e7426d01-6708-4eb8-8afe-93962446fcea.json and https://artists.proofprofile.net/proofs/artist/e7426d01-6708-4eb8-8afe-93962446fcea.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 0xb1f45944f9c6cf25e13ae765930fa88fb3ba1984b6c5bc29393b3f114c4ee40c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB82233113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8101717f81658f194748c9fba42c086be82341d752f9265fd499192788ef4bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB82233114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbcacf48a9e0c03016894956083660afc779ac13ae35dd69f2a1c5014f95163. 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/QZTB82233115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec74003bd5252fcd8d0c0b9f48c87a88e0e0e3c2649f83d347af4a8c3c901e7. 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/QZTB82233116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044420da18319ad35b6dbb5039c9a4eabcd35898d4dfe32f348e24db0ef2348c. 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/QZTB82233117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a7d93dc1c983a94425573b6e0d28169c80617410fc3b4fdbe312f6a79ba04. 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/QZTB82233118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0ef55f5363fa96b4b8a5282485395e9d27acfeda043276840f9f0c13ce55a. 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/QZTB82233119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb7996764509201e1f89f97d9faea85068f59dd27f2bf1532fbd37cdaeed43b. 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/QZB4J1807149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36ad3fe16d8bf65eea0538e37e652d7aff69c529c150c65767b2987b702cfd0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZB4J1807154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d5772f6c5ff6013f6eb6bbcaadb8d7e59a180125252119f305d5cfb4140498. 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/QZB4J1807155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a521574dcdde9d17df8201caecaa39c0bd201490d9f3ffc98b334c4617be4c0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZB4J1807151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d4f08c540cf645759996ce53abb270fcde4b55c47cbca6dd5d0252442d130. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAZ2204886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130e04c2e33b156178d39ecc12a16d3b304f3cfe857faba21ca065b5744a0e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ4JJ1966214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa1d1e7054ca1f484413fcd6fa1b2d1c6c8442bcb01886a373d97a38b86e8cd. 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/QZ4JJ1966215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90dc2ee42bf8a252dde15a4d40c66a25ab6829816b07d6d4c70744a4686c3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ4JJ1966217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cc12d87627f12a20f5a38f3f3baea36796f6d3c734f7e8a146bee8460ac0bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ4JJ1631274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4cca4882d19d0b2df7fe44bfff2fcb3a65b49f4c2e44b272632438f1cd6fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ62475313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9601df46b8075d523d64d9fffdef9f45c1002416cd931a1bdbd87949da1fd3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ62475314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640aff8915e2c5b91a8fbe2b8c5f45c64f9bcfb30bf0672d1e956e595f88cef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ62475315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a325cf37348ef8a9fa76991cb85a809be68773cfd8f82bf30dede8b86184732. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ62475316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f7d32a387dae8a05ac2a530b007338cfd7e7b47360cd9ef66a37afe17a93d. 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/QZFZ62475317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455fcd0a69abc9be1d9d85cd6e303fd4e244cae3102efd1a02bc0562abe3067. 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/QZFZ62475318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c913743882da68a9ce383ff2417cc55511f718ce15c1de58422a29c31f29b. 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/QZFZ62475319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f57000b489c299a789df527772b2736ddeb88df3c583593acc985dcc580fa90. 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/QZFZ62475320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed283bdf69c33a9bf75b893cfd5c16d32d9b0b2de44c506bbab2fe671917bbe8. 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/QZFZ62475321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640aff8915e2c5b91a8fbe2b8c5f45c64f9bcfb30bf0672d1e956e595f88cef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ62475315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455fcd0a69abc9be1d9d85cd6e303fd4e244cae3102efd1a02bc0562abe3067. 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/QZFZ62475318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed283bdf69c33a9bf75b893cfd5c16d32d9b0b2de44c506bbab2fe671917bbe8. 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/QZFZ62475321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a325cf37348ef8a9fa76991cb85a809be68773cfd8f82bf30dede8b86184732. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFZ62475316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640aff8915e2c5b91a8fbe2b8c5f45c64f9bcfb30bf0672d1e956e595f88cef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:26:24Z), 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/QZFZ62475315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455fcd0a69abc9be1d9d85cd6e303fd4e244cae3102efd1a02bc0562abe3067. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ62475318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a64ced83acc8744ba695032b865b678203b328dc09022d3b6d228d616b1a59. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAS2394138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba46fc24fa23c52ea62a2493741a226ed72c1aa909284b332ff53c23e92775d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWY2301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc346382212b8c2cd96b71cbfe6fba770d71a44de25cef339da3d8b9f0eee86d1. 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/QZTBC2360125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba46fc24fa23c52ea62a2493741a226ed72c1aa909284b332ff53c23e92775d. 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/QZNWY2301191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a64ced83acc8744ba695032b865b678203b328dc09022d3b6d228d616b1a59. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTAS2394138.