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 0x9304282f5e3234209cd576bd0258413e258ad22e67fd63ea24c5c36def58a7bd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/746b05e2-ac0d-4f3d-acba-bebe3bddf155.json and https://artists.proofprofile.net/proofs/artist/746b05e2-ac0d-4f3d-acba-bebe3bddf155.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 0xec3df66bd00cc06a5eb2540634a6de9f78d0b85956c09a9fbc79d4c764190336. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:43Z), 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/QZTB72343662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee369a3e43d7f61d45b7903493a8ac5ef7be2757752d7d4d256eba980259eed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB92378993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de126ef39ab64b6342017e06226ef915374d7a321344d3211b925577be9e06. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:34Z), 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/QZWFN2344112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d6988edc5d8f981c529652115b5baef3f3b1a3db61f43431fa19460bafd47. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFS2309576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb227851b37541f8112f13c3caa1d631bf4dcbdda949031a12d937b0514c84b38. 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/QZNWQ2435926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2839f056e15d94984e5fdd91cb27cc96a98a6935b33af77f139f8e905206333. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:48:39Z), 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/QZNWW2402474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca2280d899624250b58de2d16d5be052ad6b21977fa4441ac7e51012e0cef4. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZNWY2434553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca35034199faea75aa7688dc5356402210e62481ed1c56dd225c0ad7ca9c267. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN72495256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe401ebaf36a0cee9a88a834966d8a87bab21d7c33e52fc8b9f90af5dfdb47fa7. 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/QZNWY2434554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf552de63c1fd0451b4270c018bf5220ca3dd5927ff190c433785730f562d72c6. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWY2434556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198ee735d1e170b5c333ca51c07a3bd49f2c0ce3e56d2a20c83fd7d5fb679aef. 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/QZTAZ2440671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb809572ee7e06f900289d4abc7a1b91495a8c167aaa8bcb29e8d9481d7cdd. 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/QZTAZ2440675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60449f82b8a204c747026a5b684a427faf492f8e6f8b29af5a6767000b0738b2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFL2486050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe72bfe0bb5d3e088f81513d015175af335e70e13cbf2b757753f9dca99b464a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:26Z), 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/QZES82587888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b82960a3ee5858dd162b875afb67ec8b76dec7be14565e11c984bdd404024e1. 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/QZMER2595187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495571ad7a8c17915959b9c27d7eade0c5b718de99d95dddae0cdd24f4a447cd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:24:23Z), 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/QZTBB2516102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51abea5f82c1c27db4663bc9ff0bbd87ac497486355dd134f3451b9db41ac959. 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/QZZ7V2524895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30943fa38205d23e122524c0d71f73494db8166e13c787bf38c87c01c8cdda23. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F72503694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1841315b42dac621b1b4410d44c8e0681c4202179f2dd3e6d39605c425d27a07. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QT3FF2543715.