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 0xde910dc0f667289652b0bcbdfc3f80708d3b457eec287a4afb3588a303bbf828. 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/6ab03579-f765-4e90-934a-48392403cb5c.json and https://artists.proofprofile.net/proofs/artist/6ab03579-f765-4e90-934a-48392403cb5c.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 0x5d63fe1c68b005c13e80383d9589f1af31219cab588c750e1488cfa7d15cbec8. 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/DEE862301281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761ffcb9d4b50680897f6ac5d6d10dbf497d2d50fddc080843b95d516b7fdd4a. 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/GBNR52200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9c7b2dbdd8072e5fd79eb1e9820e212972e00c6a12a44a8bd2737f7d2bcd8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42209081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718f7aa7cfeabb27bca1e2aa5cc4b9eefcd841159c14ffba873fa4bcda0e179. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30bbcc8e142717ec77b6ef22fb803d8ceec0cfca58a24bae2ea25fdaa3d63c. 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/DEE862102294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc559c28a7ea7b5f425448879124090c1a6c4230d26ed668ba3495928ccd961. 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/DEE862100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fba1769a37c0f330bc0f7be2a3939d04172a2fca5d20c0f5ba4d4f686af25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50501311f3e8614f63369a4eaf0c079895a785919da4a114ba91b00caf104d73. 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/QM4TX2419200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2a0c42dab74fdc1d7cc3dd279629fcb132df0ec37211eaceac99e0e0bfe836. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2473863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec986fc6ab56ec022b871bf777c305b4079841fb666e6d942b6516990066dd7. 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/QM4TW2473865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdba283086e8169b45e22eb06ca5cbf55400fa63fba4aa6ffb1d78c0e31e13e3. 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/QM6N22479128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b13dbda886ddcc8e16830100d905a225dbb3901638386857ccaa482e3b721e6. 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/DEE862400529.
Kontor Top Of The Clubs – Best Of 2021 x Best Of 25 Years Kontor Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebeffd8a92afc9107eee1f58b409c7c5189a5cab3980145528ff66bec8deec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEW2040509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fba1769a37c0f330bc0f7be2a3939d04172a2fca5d20c0f5ba4d4f686af25. 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/USSM12100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fba1769a37c0f330bc0f7be2a3939d04172a2fca5d20c0f5ba4d4f686af25. 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/USSM12100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f0b123e48755978927e94fe86e4742a6d6b045d0d1e1373bf79e0e873aebd. 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/DEXN92492133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fba1769a37c0f330bc0f7be2a3939d04172a2fca5d20c0f5ba4d4f686af25. 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/USSM12100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa71122d2e16cbc6d45d233a468a69fdc5ae3159aeac794dd6ba3fb5fa856e0. 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/USSM12100203.