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 0x37f7a6c992d5650e448eae977169c44a13e11a12d186453c5a2d04ade5950865. 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/ad3ceab0-1e06-45de-a43b-fb4f0ae17252.json and https://artists.proofprofile.net/proofs/artist/ad3ceab0-1e06-45de-a43b-fb4f0ae17252.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DJ GTA SAN ANDREAS X MENGULAR JARANAN DORR
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 0xe1c6590019149baa2382cfbf18f5b8c3fd903c15faa032109e8d14c4855270c6. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/DGA082356956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45298aa916091afe7acbe08d8688e4ba93b7adca6ed0c750bbdf84276bad3c45. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/FR2X42494634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c43131b46e44542353d0eda7915be1bcfa2f849bffbf7d1e8a24ed187c4ecdb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR2X42494666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d2e10b672bbb672cf0a8be41e0541fc46f9e668f02bd5afe0a9ee3c07aa1f9. 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/FR2X42494665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8fd340f04deb7b7d773cfbc06def23c5ef7e92af48ef28a47be81501e53815. 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/FR96X2437089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6ff4396e71ec85f5f2f44b1996be9e3d742ed92f68b18324c0db4ca5ec33b8. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FR96X2435458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462661c258947a4946851e675a1213d2606ee4fcd4b8f62fa008775cc776165b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR96X2435464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ccb544f57f75668a88035c58c4cb6b533c574ce2a79d117beba881f6d31652. 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/FR96X2435466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124122b4192bf36555fe2af1144c05d5eaf08a24d9db8980f11aee28f5ddbeba. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR10S2531444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc300046ded83799c41d68cdf41c9a6b1e006b95585fc15bee1f1c551361d0bf4. 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/IDC012501446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ca4229478d51625d638b8786a49f2be75cbed5e080b402e04fbcc60ee3604. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDC012502217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d302cb81d276fbdd65134cb44f40076315b793a6f866b948079a9daad0a7465. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DGA062587213.