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 0x6a033b113e7f598bfe6335e672d54c88671248537ce9f3fe0261508f9e19e7f3. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d83e5754-bb86-401f-8c55-2343d0b98355.json and https://artists.proofprofile.net/proofs/artist/d83e5754-bb86-401f-8c55-2343d0b98355.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 0x4d6d4fa93a92ec7a20c25a540480ad262e101c08dd270370d73b90015ae6d552. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:46Z), 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/QZNWR2517287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214bb9b3240ccd7e29f64a08ce0f353907b8b152200eae6c47ac3b0da2adbb9b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWY2530043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece25f5f4447230cda0920bd39c75f58063c11fad7d90b63f2717296c11babea. 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/QZWFN2560254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f9cbea809be3bbb6a9d5e015d68677f754d1dabc20426d91bded6e2e8253ed. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:01Z), 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/QZWFN2560255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e3f3d8d193481ab5037e89116c8912159fb02938434b99fbadaae79918e6cc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:19Z), 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/QZWFN2560256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a5cd047f59b471de682de00c40beb5c56e277265e60a4f86324433dece584b. 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/QZWFN2560257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904f11fa42c372afcb3ba20cf0044f4140263fc59ea8b70973cd0863a13a7b1. 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/QZWFN2560258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327795e61dfb18358fc3799ea6df5d9b4a9e76b612494cb132fb0c996f8416ff. 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/QZWFN2560259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1117733cc328f25bc82343a72824a0f932235a6c76f9e8c6f47aef44d2872f47. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFN2560260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f4f9fe8f03326142d41e682fed789b116fad46d8b31ffd52110ca8f4eb5282. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZWFN2560261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef085d436ff6daff6fa3419ffdb15a54ffd2f909cd4f506370d2d46c7ad87b8. 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/QZWFN2560262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093e096d70812f8ee5a7b5a51dd0c9d806b3d80ffabb0e152a37d645de857a54. 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/QZWFN2560263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842418baac747f140d0928156f7486566056ac0dae4a32a37e7d2c1503fcccc3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:00Z), 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/QZWFN2560264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5254857384a90fab8ad4f99c2d7ba8f508b912a6c0318a9de065631f9ed14486. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFN2560265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64e43ea538f5354635351bdb91fc3ee021a530d9be599fc6834a5dea48a33f. 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/QZWFN2560266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324086523a9d39d79b48a46dc2964dbfde5f364c0d5d471b921ff1c60b4849d0. 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/QZWFN2560267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd83b8045e2d7bce944676c0ce3fbf16fd4d5cc60d9ab95082f4e9f9532b11. 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/QZWFN2560268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3aeb9e67b1a84b3124b7cd3d95954df7904525b3e35b7b2c22d8d122d7a813. 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/QZWFN2560269.