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 0x9fd10ab99e63c934e7265afa807e380c0823ba0a7606f0b243e984abc49b8a97. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6e666b9-51e9-481a-99a5-c9df2451b472.json and https://artists.proofprofile.net/proofs/artist/a6e666b9-51e9-481a-99a5-c9df2451b472.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 0x7e7736dc2b09fb1e1b57b248377da06b6e9ba6899deafe3b34dc81f1dd0f4b02. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN62561278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdd5606ca22969a71ecbca194add6627bb8f9b108bd80ced5cf90a925e15815. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:44Z), 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/QZHN62561279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90678b36dbb35583b47b18651d07dadb18f804c5295d241d76213358bc0243d0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:41:08Z), 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/QZHN62561280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b0ea8ca5c5f041742b5f27b140bc6729be58162145a89bf3a203fcd86dbf61. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:37Z), 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/QZHN62561281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5667c65a90d71079e2abd7e5d66cd566fcb507ff80eeef445369fe6a342cdc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN62561282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22393f656a8e4d4dee97a70892662eb710395149bef336f519ccf3ac8e4768ca. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZHN62561285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2cd52d404426577d58cfcb99b843c280209782ebb827ef9cf2da22ffc45b4a. 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/QZHN62561287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c46c76e81026a1e50d2efcdb38ff115449a804c89b997f9e5b2b55554c8d88. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:58:00Z), 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/QZHN62561288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2300fd30ead1818da75c05db6d5fd5f573d85ef51b77e4630870b1aa7e75843. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:15Z), 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/QZHN62561290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b1cf8ffbb4119f5bda8c23949da5452edaaa62145408638ebe6b5013142fb4. 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/QZMEQ2580273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf625bc6907700be1b5599ce8f972c55de75286e604ea7daed7380b31c041f4. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZMEQ2580274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3abde213d2ea6930bd1764bae03ebf41e41317cad48a2c5753719f6c6258e7e. 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/QZMEQ2580276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b7fb5607265a3966a4886ee252cb34c72ca604f4314b458863aa8346653af7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMEQ2580277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6a666db7953859411753ec10065a11b91a936940c661e22fc8b245788a0700. 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/QZMEQ2580279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bd37ba4cd149dac78b93507e3843da9dff2ad30e2c9af8d68e2d86ee9be882. 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/QZMEQ2580281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6cc07de33b1815a142b39f290360ff840dac3b8eb3cf4886e1e67972c84fde. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEQ2580283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02213ae98b63d38bb0d8e4f076b197ea340b63c0193fb58e4298e444edf9519. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWS2508326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb53861647e3e6064097d380bf324775e2b1bb8514ae3af1df773e79427f85af. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZRP52519310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8c1fb8c7265a072d3ddc0b866114f0f657bf674c0c88a64adf9e661c6f9a0. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZRP52519311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2539139aada1db588ee289e499bbb130f78d1fdc9a7c9fb9549196cb39542211. 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/QZRP52519312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8218e36dee4bd2d8fe6f01b142cfd2c1e7db33b20e1d3456379338cb2cef9652. 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/QZRP52519313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22d09725b3f0dbbd6cab12e62191ee0e8a290e48eaad37db5e0a552182f688c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZRP52519314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b84c03902f1a7e0961a2548e2b257bc07257a33f1b769f4a09035fae4d4ee. 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/QZRP52519315.
1 Hand Wash The Other 2 Ears To The Jazz