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 0x635964937e390a8cd0d5e523abd63f9a586db011c191fa7eca6a8e55c3139066. 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/7ccab514-4855-4a0e-8686-3f4f8149de8a.json and https://artists.proofprofile.net/proofs/artist/7ccab514-4855-4a0e-8686-3f4f8149de8a.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 0x45b6c16ffa76f497efb8a913f90f96871cc544584f2faa67d84d075d24121122. 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/DEPI82302262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01001e4fb969b7303035e9094af9651d2a4b0961c35b6d11ba953d5e6520008. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9W12221746.
Unknown Landscapes Vol 2 / Mixed and selected by Christian Wünsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda82f0f1b03f7f52df8c9f91712ffd04af79b50db09d69ffdc1725e4a27a2293. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41404090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a0ba46f6d6370daa95b3bf9d2224d28b5c5127f833c059683404cd868afe3. 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/QZS652425472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16ab68815a29ccfee775743df58163796fe4282e37e62685ffd6f1f0f3fc6d5. 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/NLCK41085738.
When the Sun Sets (The End is Near Edit) - Claudio Prc Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348075fd90752140de8a88abfc7e1a35b0f3c4eee5ea3335f701da3bd64ece39. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKL9R1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760592f2a9b5bf8766442e16327c9c5e53045838365bc8a7496cf871d9a15bf1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK42227834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc23ae308f5c2128a3b1669386743ca46471d044c2182e3727b9a2cd31cf54f5. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:07:33Z), 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/NLCK41061107.
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
Greenosophy Chapter II (Compiled by Mizoo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af0009bb10b3f16afa66d11395aa1bcf4981c2c2513ef0d29a2eb89dbc34783. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQY51706347.
Division / Taris (Claudio PRC and Mary Yuzovskaya Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448066f458233e699a94f85a9bdc98a5b4ab41b172cf81e7d9154cea9a6bb3e5. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/NLCK42211284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc11e853763936c190a278e6eb8fdcafd87735c91b020fb2202be0c319bb684. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CA5KR2330902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0e8dca27b2ca74bece0dbca437bf455d1f655f4d2f031ec6d0577b3396329. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBWUL2014514.