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 0x9d07ec2ce7c38ef450edf2bb5eed5cf388186551a71d7a9edc7832e236032935. 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/ea4e9a45-b39f-487a-aa8d-dc2393404c37.json and https://artists.proofprofile.net/proofs/artist/ea4e9a45-b39f-487a-aa8d-dc2393404c37.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 0x2b8b50fcdb0c35ac9fdadbdecacda0e170a3d2e5078397ebdfd58a03fa5611ed. 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/TCAHO2330532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636066edbe3ddf501290751940de6f61a2d2d0a0f97926b2f8e7bbaeee301518. 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/TCAHO2330610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb250f96ebd89fb6deca9900a487a0a415c618df229c74c613f28e1b8bb21ac4a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAHO2330619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8427d651ea31656ab9f0317bf460b0b07bbf766731cca09a05f3b7f59c6b97. 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/TCAHO2330680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b549e1a29ac92ea612751afcd13d5346b8e3167adf45ce51ec6d329276b227. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCAHO2330575.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c823822dafbdf24954752a284aec5dd0661cc8afda675f625db3d99d784d8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAHO2331099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67219bf32c45445a73af0c374b4948faba9cd2e9e00ee8d26de837dfefad2981. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/TCAHO2330664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54b7217e48cd3620b01ff6e78f298f75db1daa5b7064eceb4901ed7048d236b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAHO2330897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61799665292242325dd3bf91f78dfb00ff5ee5b820fe749e450ee57c7bc4e956. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCAHO2330981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b619f6533da43361df20744da2a3edbea8e304ab7c05ecb9d104420165d6f33. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCAHO2331078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b902ca80fd6613b6ee6a441bdc9518fa6c2ba63bdc8506308e3e5279b4603. 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/TCAHP2368942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa58602b6aa6856ac1d28cdbff85b2434ace918a32029febeeeb7af15e53ac2. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/TCAHU2409342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcf4d6c849fa9e9b7ae0a752f2edb98bc6604cf193a9baa6fce9d7f672a09f6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAIB2475351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d87a618863a3e985dbce4677e57b8c54ea619a754913e5bf174ae90e1a180c3. 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/TCAIB2475434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488334cc695149e831cae6501a42931b40ac93fb8da66459676eeedd31d7179f. 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/TCAIB2475757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9405a905bd7e08fcd26ec4ca921ba4a78e56873330fea304ed83d293e8fe3d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:17:50Z), 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/TCAII2445081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ab343cfdcb00a037cae7f46209a71a80c244fa9da76ea676d61a3ca07f8c64. 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/TCAIL2402510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8068a185bc74fe3e4a106d15df6c5588e2552abfb880a374982ba0871a2260. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/TCAIK2458652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b3099965fec08e8563197fc67fc15a41c05b2be67cb9788cf52e11fc645f7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIQ2497151.
If the World Hates You Remember That It Hated Me First
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c9cb7c562791727939cedada616a5a963bd3d11346dad78a6dadca6807cb4b. 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/TCAIW2405963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa675562cd31cb88e741c8dce59c1b80a8f52b181a3854407b75383216bf24d67. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/TCAIW2405981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057bdbd3f234be16f92f75fb520ea7ed96f1e8cf48cc9f4d086243f8d3f050c1. 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/TCAIW2406036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550dfcfeeb17638380eb402d87bd480c86a9a60588cd53a0f38de560037d2715. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:28:14Z), 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/TCAIW2406053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad884e5f7e8f3377851840daa00bbcea0a29b594de8242ede20f4c10648a3126. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:43:38Z), 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/TCAIW2406058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cdf5eb2163fc813ff63d97aee6eae1460cb39c6e0bdb4836d7858bc222a394. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:48Z), 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/TCAJA2408776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace871d37120a796f93e072565073f48bbfdc21a8964813baad0bf108491f447. 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/TCAJE2457007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7a44b95f050a25d40b5361f47744fa5ca7d9abd22f01753a8b480b027ee59f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAJD2457129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dad633bd6fa3858a41dbe0a53500419d7830bb2528e99b119ebe5c1f716dcc1. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAJE2589821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b87044a2d5e4e69d6cba2dc64c9199f829cdf5552dcf38c0cb8f32c1b32a6f7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/AUMEV2524656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8779eaa2963ea93c345e0352f91fa8481b221c4552e896af368d32115ca56a. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/AUMEV2541406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd526b686db92437c1c2acdc6d9ad8d6e7adac41d06ec24a50b5663f734c08bb3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/AUMEV2541407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ad3a1e2087d847a72e687b8afe4b5e288c66a7e2e79df8e6bd034b64014b8b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:56Z), 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/AUGBT2528884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e10d30f662cfd0077f0e18f1e6696f8f5f567bae94004a6e1a0cb896d0c45b4. 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/UKW3Z2400444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5605d719eddefd9b93c114edb0513a44b18318c10842b259c80212d46e6e6b. 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/AUMEV2509150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffa5cc916399491e7db232564567af70a77fe01f099303e71f86c1ad488b0f9. 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/AUMEV2508753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac29849c46fe81a41617a77b307e92a08a1391e4e1f85a78d6e2265f576e237e. 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/AUMEV2505548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b5a1b8600b7aa55bb42c2c58ee6717b77023e8ff32f1b24d924c85fa6e6e3. 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/AUMEV2504770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04df89d62f0e730a0c10ba10435d46df89186e7647d41e5c3e29759ff7ab9d4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/AUMEV2505522.