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 0x5475cbc6448ade3a8d73d10367b36b62e081758b158f6fe932194e77fcef490e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea0c847a-2747-45aa-af2e-d69066828a51.json and https://artists.proofprofile.net/proofs/artist/ea0c847a-2747-45aa-af2e-d69066828a51.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 0x65c0fc9e966376069b75b5dc10a9e173d708d74ecaed51d2ac47569356e9b73f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:55:27Z), 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/TCAGE2218806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35671bdd92cabe53469818a652ddfcb74468adfdd6ec417e1e2e7876b8c87a29. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:48:59Z), 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/TCAGF2284715.
Кожен дивний день (2022 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962fb2cb41851a5fadde8d4061d567002a51e1bab9596cabad0b5cf5433a789. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6SA2280084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9da7ea9af315f46736ebb8a9c6a27d85b5a23b27b936b6a50d996730a83038. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:58:10Z), 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/SE6XW2278160.
Полтавський палій. Крим. Бавовняний тур 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98f511d53531c86ed922728a2655f0f4ebc0cd1d657597dbce3d56df3dcacdb. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:00:52Z), 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/SE62M2278037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42caa9d98f93f42924692222faec5399e546da5e2bfa90e8ef018572189d1bb0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SE6QE2342498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d5043dbc4abbaeb28897f467235a1485023e3c3ef0c923bfae6b3dd75a2dcd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6XW2323491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce180839b0311ca75371c162d2380a10a927be4632c8e6e57dc1b2f6630242. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SE6TI2334562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ec47928a16156aae9afdf013bb90d67d3c8e2e43d5efa12ec0af8a6a080dff. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:02:28Z), 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/SE6TI2305885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968a63284bb80e3a7ac9cb17715b5f9d63c5014ab7b516ef364de69939eb2da9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:10Z), 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/SE62M2336925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef91479f1c7ffd0577e698969dc48c5500c90c9cc8d3ab7dbd560da0075a4cd. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SE6XY2358908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7fb1c9e22a0c30909032d5d33097bece2e276097362fc76b8e84d2e4008a5c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/SE6I32417420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118b5d2eaafb343e2c31e2e366d1110aa5ab3b383d9cb7cf731c99bc2775f3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5BU2517823.