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 0x3354c48f09e04caa2e45e672bdebf3114eaa6c8a208d1319e3f79fa9d309ba84. 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/498a1e6a-da05-41a4-9520-221e55015c29.json and https://artists.proofprofile.net/proofs/artist/498a1e6a-da05-41a4-9520-221e55015c29.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 0x430f9cefd7d037393010416ae67fb9ef1d848873f8d34e0eac0ce29ff2980cac. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USL4R2041587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303bc0f9cec5948fa10dbb8ec18d9efa31a3b49e2933460df630457d5c10eb72. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2198516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c9a901268f4124c1f424a39d506baf1914686b7b665fc4fd34d309b532dd62. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USCGH2198517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5869b9411b5616fe6746f76b574788f25d232461b40f301112fc22e96856a44d. 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/USCGH2264243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12cbb46636e2b63109b112fa0f36d5c1bf30b642d43b22359ff7a2014dc2743. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:32:20Z), 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/USCGH2264245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c05783de0222169e30eda8ac88b54cdab9a355a5400a5fe26934ea61728a1e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USDY42242395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cf3e0ef2ee22288254fdee2effc37d4b13387c1394c8645e4ab2085db246fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY42242397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614ea32903eadc5b449194717ad8f8e56f91c52cb373ee516a27a3728d584f98. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGJ2390165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6a1c0ffb0de64baec7cb19b8ce7a6c35422cfbe07bb3c997a1c739cbff3b90. 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/USHM82373887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d166fe61f09dfe0ac3b21d2d99ecbc4e8a6bf7e4bbf4fea0e2f96b898648e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USL4R2325739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205233cbb8c999a1face210be5943aceba9a4617f473c6bf487888486db06efe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USL4R2325740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c34b85d9aa2b8630ab5915ef3ebf9f79ab03265e4b53ed3b20cd67df7eb59d9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USL4R2325741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b6946a59ab131dd4e8aa1e4c9fb3e958e2fca862e0faba8c44f97a382f189b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USL4R2325742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed42cad174ea884c8a482f1f3739c0a5c552587d98b3c6890affbde050aef5d6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USL4R2325744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde054e426638166020accb6aeff239efa0630049d7394c578e0c22e59fb35cb5. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:37Z), 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/USL4R2325745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758132abf636f43adffc3f21119c2dd295e57bc1657e299e62d09ebc44812d14. 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/USL4R2325746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0d6c3986cbf8edab35a9f1839bc4b005d14f171f0751c1b921791a5e022646. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USCGJ2480100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d184dab0d764b1660ad37e18de5cfa4a7e70a78641bf67ad04a289326613d1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USL4Q2431714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67286e3a13b2954bb1ae9ef9ecf9401cdda32d146072271531fb85209a0e1ba. 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/USX9P2452623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39e168ab7eea9d9daab5f5f6a3a3c3dee434427313d93b944f8a3e27362605c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGJ2537301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392bfef5c3c80dc0f59e8261150a8a59bf22b6a21bbec0eb51222c3d6afc9f26. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USDY42524643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50f3c72cee26cf3d68d629b34d34e5ebb8e929ce6d3c6452b45dd23096cad31. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ8A2527364.