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 0x9e7f235ffcf94ce43b5dd6ad5a4723c1f499cf1da3f97699974c575431400ca0. 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/d08a65b6-dac8-4bdd-970f-437d293f0bf4.json and https://artists.proofprofile.net/proofs/artist/d08a65b6-dac8-4bdd-970f-437d293f0bf4.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 0xbe865a3ddeaac523776f9f7330ed112c47636b0f9d8967eb9ab4fd2258b50d01. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6Q2293362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc895431d0aafeef5d055c3a72d9ac698b5119f749eae5d65dc1f542a04556ebf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6F2294604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecaf04e79e6afa2f216b9cf6fc52ef76e2ef19a1f1acf77a4066742476105d1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZNWV2222780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199f25a425f6892604e5141156d4efe9b75b961bddb978c0f893439280f2b27a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWV2222781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d4e0c9fa8200cc2db36cc7c2c7de60e01034950769ce17ff4960b3b1c10d24. 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/QZES92301859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f82f722970acc3cb7124a75393ac5f599800bd2740e7ac05b3be03d5626776. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:21Z), 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/QZHNC2386012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ad1ba7f0d50d6fe5975949be81db7dbe2abb6158596ab9079ab11a57892586. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJX2397301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe681b58a8ea2d1dbb0079228f98c3c3038e75de62c69afd9de2b7967d06bb672. 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/QZFZ42430535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c93561c4d84372e58b74642fb2fc8f9b151ffc3e1e1565a7cdf8a25ac7900c0. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:24Z), 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/QZFZ42430536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e261b52bccb30d9fc7bbc2d0f760b88f306eb89f43bd8b3778bff9c535b2ebc. 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/QZFZ42430538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc135a4451cbe90c5b27e8181ad9291be7588dad43fadc29993c6503a4b40ab. 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/QZFZ42430539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5247fdeb3bdfbed4bb1b2d94acf3f36d2af8b1c3a02fe875d76653fe6b96814. 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/QZMHN2431018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf504e29960555d83ce3608d3995d1312c7d3714cfd1901442df459944fc0847e. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:57:20Z), 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/QZGLS2452758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77122db0b8bc8317545c4138541d96e79bd684506d1ef7161e72d8e20f038e. 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/QZDA52527218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f388a5ec98845b011665411a7db2b169947c735b373a737cf8a6f6e08e5418. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES82541619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1748469a651046a80e01e47de1ffdc543a149f593d1595c29f67a1653002eefb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:30:56Z), 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/QZES82541620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5b41ff9e6f91f39f0da236ae7dd88a04a7bf4118555640605b9f258c15663d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:49Z), 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/QZES82541621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f278a5cd9b834514d4aa75c2440f00b0fcd6bc94635897f1363e17508e1a35. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN32502601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4430c9d0f5f4ae2b2e8b6e04daa0a043f3630861c1276bf8f56f655fcf4338d0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32502602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22a1f70555ef55dcd2f416ab57f57edef88a2bd8e53389ff38b0ef327d6ff1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES82541624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763310122da245d3ef169e340d4cbad1ef7a0ccf9988229686833fd7580fc01. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FB2564525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5a009e2b6f03f4ce7a1e7f7c30d7b1371962facb6ef0e82bb5265f292089fb. 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/QZNJW2349406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5a009e2b6f03f4ce7a1e7f7c30d7b1371962facb6ef0e82bb5265f292089fb. 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/QZNJW2349406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78f6498722fb77b896339d9c51626e221ee3fe09d275e7633918f9ecbfd36c. 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/QZS632211143.