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 0x1f2656adc166c7723d7451ff728baf90ab95324f30683e3860ffb91f36b995a8. 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/047d7d64-44c9-49df-89e5-dfb4b2e655c6.json and https://artists.proofprofile.net/proofs/artist/047d7d64-44c9-49df-89e5-dfb4b2e655c6.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 0x8f3e688c82b02767ecadf631dfa75f889cd5ad992b1e33fad90e6d7b5cc7a925. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZADU1910903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b0138ca54f8b09dd81cd4e2971eb9d4b8392d5d1f54d213045fb0a1f036496. 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/QZADU1910904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4835f9775a6ae4d3c446aee608514c51725731eee438a5a86c8c7295323a807b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZADU2012701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755255ed695ec044c114b9cce1cc0bba3df2fb93f760cf1a6a18c7362535090a. 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/QZADU2012703.
Tribu Ancestral (Compiled by David Madrid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69ee4483b756b98496cee56dd294be778d315e4345be0db53ae9964c8c470d2. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/US83Z2107222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a309e08b763ef65a3bb568e59252133a20f5a4c888da5834699fa006a5aa50b. 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/QZADU2113802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958f16c19cc4988b5cf227aca2ff03c12847055de9c380f7ad3c35ffa8c279b5. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZADU2113803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b7465a569d22601f73c3064671a601f2d07e3f93baa927cb40fafc7f97f1f. 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/USLZJ2339218.
Reborn (Lemon And Soul & Shiri Shahar Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df2500cde0fa014db3986ec9ebf8882a07c9364b77180d4f19f1b044f778cd. 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/QZTV32455842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613fd6dad5b6a5802282c1c394a17fd427a89fe729948fbb1b1aad98a4695af. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMHK2512277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf62b42fc87742c2687f1832c9fa47c6528df4b8e6ae8a2a026241417b82123. 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/GBRKQ2323967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df2500cde0fa014db3986ec9ebf8882a07c9364b77180d4f19f1b044f778cd. 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/QZTV32455842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc27b16a8975ad6ceddeba70e891ece013b7ee843aede785495acf48dfc2a2. 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/GBKQU2061034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cf950935d26ebf06228a94ac93e59d2ad355cd92e48381cea56db7e799b735. 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/QZADU2214602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf62b42fc87742c2687f1832c9fa47c6528df4b8e6ae8a2a026241417b82123. 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/GBRKQ2323967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7784b370e579aef828eb82d37f36f36cc5ced5605e47e1206a7fa1d60f8eb. 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/GBWUL2363452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7784b370e579aef828eb82d37f36f36cc5ced5605e47e1206a7fa1d60f8eb. 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/GBWUL2363452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd167e8524bfea07a046f072fd2d084717f5d893490a86d82b8c7f7af1548b140. 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/QZEWT2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b7465a569d22601f73c3064671a601f2d07e3f93baa927cb40fafc7f97f1f. 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/USLZJ2339218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190848717572c4f08a39e03fc552db0fce1e3de34cd44415a55d43630db417bd. 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/SE6HN2440533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91116d688dcfed73986b97d6ac585921d25e6e43980e23b21d231fcc948f29e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBRKQ2282389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91116d688dcfed73986b97d6ac585921d25e6e43980e23b21d231fcc948f29e. 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/GBRKQ2282389.
Fantastic Fungi: Reimagine, Vol. II (Inspired by the Film & Mycelial Kingdom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1852d90c7deed1726196261144dbb3571d408c62f49d8f99987d12a3770c581. 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/QZADU1911103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7944ede53a46260761ec85bb4f4fb2e5897b97b353f96c28073828b8a218b109. 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/QZADU2013002.
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