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 0xfe09b6ca53b5cb119d3c4007eaacf2715b4165b1558979657780698adbd60582. 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/769d3606-006f-4b57-b4d4-bcfd76e671f3.json and https://artists.proofprofile.net/proofs/artist/769d3606-006f-4b57-b4d4-bcfd76e671f3.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 0x18cc33bba101b6a4fb9e625b42cf2d067bab8589e38782e320bc77f49faf583a. 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/FXQ892300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0077a7f07c16671281754d111087fc3b266eeead097958592be0a4e331b14. 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/GBKQU2203615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b5e812f437be3519b34b341b21e90bb2e5babc3bc20a8bdb2ad2685103c8a5. 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/GBKQU2118434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ade485bb6d4a07ef24e0b8d4c70a0769d358f005f71b07b74088b96411b9a6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AUFF01900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf043d748065dd67bd1e71b0a2a9b4cab7faef132fbf26c5a7273abd6481b3. 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/USA2P2027071.
Painting In Shades - edapollo Remix Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7128a483a3e9012d98182694bd4f19a5efcd179dde016bfe0e6e6b63000ba. 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/GBKQU2410521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08637c21c34697e6cbed7c71bb4298e19dd35209b3cc97c39e4a7bf6e42eb2f7. 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/GBCFB2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c97ca8bda272ed4423ca5d641736522af2e97da76176ea60ee7c7f27fc6345b. 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/QZ8LD1967510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ce454f2615ca971f84e1a88a5cc4675e511d0eb3c498dcf115fed2a8a316af. 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/QZWV32440119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cacc40eda1137747c22800cfa30054311bd94763c2283eaecdcf9ac8b26e165. 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/QZFYZ1912050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a378a23924acad99e7071fb32d85f54c27031827b88a0ae28210585b525ae9. 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/QZFYW1998934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367fae7c12b14d40e7e0d4cc3013660b52b7517b426bc8a8fd63561d58949462. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZTRX2105235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5892350747031c6e27d2b45d8cc24c5e90ad980a79cbd98299e67a3a7e923. 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/GX3Q92186390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c673a4bec72341f152191a4a755fb740c1b56da12e3e86efc96a9a4f2d18e2b. 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/USQX92004382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b1645a43c73878a81a429934c1cb59f3c5bf83b31cb70ef51d002ffac80f5f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NL1LE2001344.