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 0xf1daf56c863b203102b2210541ca92ced965ebc0c70399bd0f4f9ceaa9f8b6e3. 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/db2fcf68-cfa2-49cf-a247-245cd3cf371e.json and https://artists.proofprofile.net/proofs/artist/db2fcf68-cfa2-49cf-a247-245cd3cf371e.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 0x9d44730e98a0fa4dbf3e1d4085e606b2ded4cae8c69706e3c0d100f94dc337da. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FRYAS9207202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d34ba1e187e6dcac87c2846d3b91ea9e56279e60acea7c783bb558088265c1b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/FRYAS9207205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aabe40100207ea8c4c2cbe40d644b870cff151ad593acf4bba3883630f30c1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRYAS9207207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830bdbdb478854324ce8fb3490f25d115e8fad1b47ac769ba2edf8a9eb1440fc. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR6V81056388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e721df7e60f345e2af587170512f74b6e88092725c66df9392bd57aa0d0f81. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/FR6V81056391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d40564497f56d9fb0709e9869849b41b9369d11eb5c8bdfd5a20db7edd4a76. 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/FR6V82633163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99fa28588b03451628f4a7d84492debab133c43c1b693b9bfe9ab2bc5b3be48. 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/TCADB1700841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1603b4df5504242549477e106357c786eb3ff3d172f90c9dc0c94525a86db57. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAFU2145493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3861f32bdcd0b4825d0e1032712abcf9caa1971844a4c7e88ada02de0a2d3dd3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJF2551618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6142f7e952b5baf8b7378449e0e2af0b8c763bb8e36ffd87fec5503b694ab. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/FR6F31642790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cb26714eec70b2de02e26832230b55497e687872bbadacd773100ca9ff810d. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/FRYAS9507295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce617f049a54a275bdb9e73670f5ae9c3ca02714eeeee043ad2c1e5033b9123. 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/FRYAS1002367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56437dac1422f0d2ced27a44b1c43559c4a75b1461ec6233b31d5532af8eb4f4. 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/FRYAS9307136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b87c314fa1a2053b733091ff06a4f772b2f900567134e01b4e7501e61faef0f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRYAS9207508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71c4005f20e10f199837175e5bf26772617fd81d9db89103a8b871522f06ad. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FRYAS9207511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1a6445dbe7f127f53591dc126ab882fac7cdf993e7f711c55973a2bc5e370e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRYAS9207513.
Viens zouker - Nostalgie, vol. 4 (Mixed By DJ Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba673af8127d9cc6ce64d66bdd667628abb4210ae6d1b623eb5be12087e62a6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR6V81837311.