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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3771edff4874e9e904b221420b05a64c1caebd35a0b2b7e6079f59f0dd9007. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0eb33615-19af-42e3-acf9-fbbefb6a2f1a.json and https://artists.proofprofile.net/proofs/artist/0eb33615-19af-42e3-acf9-fbbefb6a2f1a.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecc9d7ebd1a2d318995f528579a64138da2421a677c4239e99d426e8c17a65e. 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/NLX3Y2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9894f2a42a3295045c8bb65d43abed30ddf63e92ca75b3993eaf6c1288a81. 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/BE8LH2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254b1b2192b140d839716220cf43667339f56f529fa9b8cfc15a0ea0855a7501. 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/BE8LH2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d246a7e36f6ce25036a95054d45972afe587f855e17e73c9b8804d24b8d7ea. 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/NLT2H2100758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ad6b00f0c2a4e36410776021c1da63021219241f9627c30c31eb5ec3d775a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA5KR2416068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1735be0caa12fdca1c305e3c59072f53b93892c123dab66f8028df51889eb730. 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/NLT2H2301061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34baf7047662e45fc4d4db51d7911cb6b56526372c43f0ab5777ce4b66e5d16d. 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/BE8LH2200038.
Lounge Covers Of Popular Songs 2023.03 - Chill Out Covers - Relax & Chill Covers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f703213ed7f9bb8e198ba5357186a3d23ee20f6cd215617ba61a8c9fece33e. 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/BE8LH2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557ebb7aea024c272e207fe6c9b302e5be8a5fdced366f198adda8b4106b6290. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34baf7047662e45fc4d4db51d7911cb6b56526372c43f0ab5777ce4b66e5d16d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ef7de24a61fa0a0b772a04c2975458a59689163712941974d7832a92422969. 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/NLT2H2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dbe94c7ca15a2024993197aaf099ee6d8babb484adedd7ac00850defdc4258. 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/QZK6L2138403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceff7f36cbc2304dfd1365795565675d1647480e0bc87a1f5c0e04bade1dd185. 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/DEXW62100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17e7c01436f3c73a9fc11337b7c5a20d3869221ae7b9814dc6a5e3dc10cd4ab. 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/DEXW62100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee57bd2153c87c93170c3b822318407a52dfc1d71bb83fdd0425d448554fc0c. 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/GBKQU2371546.