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 0xb6ec6d9e91c488ceb3ba98e8243c59c7a3d02152b39d310124ab88ff8aa5ee15. 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/2f4cc7dc-f557-43f7-91d1-bfdde567a707.json and https://artists.proofprofile.net/proofs/artist/2f4cc7dc-f557-43f7-91d1-bfdde567a707.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 0x7890ac84dbebebae0628280c10ce15cf67b48fde0cf86296138321a3eee496e9. 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/MXF600603317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9341419f455cea896954c9281c150e4ebe1ee15606bce9f6dc272f5e2ab27124. 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/MXF600603318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008403fba16153abbc9f99d7e6f8a7da8b0c727b6f7a50f47202ed51e4a19c26. 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/MXF600603319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749dca80dbe9ff34e2d8b493685767d0df9d2698e13f06ec82a54127329b558a. 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/MXF600603320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec75a3f39097f4d3ddf8ae0e06fb15899b8e8637c76b90b2de3e9f397318afec. 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/MXF600603321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8292e88d6c87e691d78401ad1bd66189e1f383e9b008110dc3550e6a7693738f. 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/MXF600603323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc807e8ba980628b87543014eddd55f863a4f01349c1a21cc3e4dcda889d14f8. 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/MXF600603324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea44e26646115d9c47c42d4aa7a69130072f0cdfed8b9497b8fa0a9f99d9dea2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:40Z), 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/MXF600603313.
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 0x2dbdb75c90d126c2e8404b34825995d10146858e1dfced21b2b6d8d83779d439. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/MXF600603314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509977b2ff07e2debd2ee8be7de05e685d34b30e1509ea9d7fdada4742116f18. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/MXF600603315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c5c7cce4056d1a5a4c98ff6d133f6b74b9ce72bb45f229946f712707bb84d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/MXF600603316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3dfe70e14cf14b4c973829db72c8da9d312f4318003a88db3cca440d9c4fd. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/MXF600603322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9703beaf43fca1a2ef7db795ce841c65c35622dee06f1ef328176c68d0b16ee5. 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/MXF600603397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd227e180bba367e2bcd4378c476e9cf4d92d9edbadcbc951395b8a02ad4fefcd. 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/MXF600603398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea941f82f0b25911122e9e9ba6c45c69129118198c5824b42404f5c925aae7f. 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/MXF600603399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36b265c4bce8cb87d84bd6f4dbbd73cfe7688898d15e8efaa41a7305b83426. 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/MXF600603403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557df373638a03a19d9a08db7ffd1f94e7695e53ac6063e63ab5d3038202551a. 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/MXF600603404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee637b56a74c1bc3729150a8cbada7b16eb638e23cd010a402dc417c8426b27. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/MXF600603407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06109a309098ac9c83a50f194c2c584e0ed3a8e4298551b72d52cfc98f07236e. 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/MXF600603409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344dce3d8cac9db63616ffe184efbb3fd92c81a51d1ff1f695c7d60534f66daa. 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/MXF600603411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e32bdecf80cc636121889da737770705aaf696f5811db329301b8773f54078. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/MXF600603400.
Nuestro Amor Es Ese Gato Negro Muerto En El Baldío
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ddcf44e940e3fbb59830d5e0b96b5fe81f8bd96826e31daf49c3309685ab1a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/MXF600603401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432da0f61b484efbb5fa727e5a1e6fb4659cf5e5e955d9feb4012f9eaad32ead. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/MXF600603402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2559c4fb401a52cf3f0471704a4a135bed79828e927752ee8e57ad9ebddfaa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/MXF600603406.
El Cara De Memorandum O Cutis De Curriculum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa0349094ab01b067ded0c7e8e49068387bbd3863b6e30aaa2a9e8ba102d99. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/MXF600603408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447010afd2788dded361c8d43b5d77374c596df74505f6d7499ce93af4a8eeb2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/MXF600603410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b21984c18aa7220d504024497978d3b1aa3644019abfecbdccd9bea02b0b5b3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MXF600603412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00906c8cd0d1dc7631de3169e5ab372e2c0e6403d406e07a1bb23aefedd3cdd. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:40:47Z), 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/MXF600700408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b49890b24de53fa3ac109ddfd62aed49910c149ab3f0fff4ee487831e37c904. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/MXF600700416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bff51922b829f0ffe947ee0c6b6500f191a6aac1b7b50934933952541b73ec. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:45Z), 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/MXF600700419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9949938a16dcd8edd35badbcd6e25c249a7ab741e6e8eaa8d3064997b130e256. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/MXF602500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d34079a79860d076d67980d2e043ae84707feb0ac00615522f4fb79f43142a. 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/ARUM72100030.