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 0x08b3fc3cdb5dd32b2703430db6a564a9c1b750ff4726561eb63c3ebff94437fc. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3552ed71-ed45-4948-a737-df9eaac25b3b.json and https://artists.proofprofile.net/proofs/artist/3552ed71-ed45-4948-a737-df9eaac25b3b.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 0xd30bd799b6e6b08e27cf8bac08746841de768eab5c69e0e588c371ec6230fa1d. 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/DEX262000799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348d8352ec1f39283a85e5b4c2d7478e9815ca58e3672ee6794809faaaf99f51. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEX262000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696dbfa4fad1976e1d75e88dbbef9e125f15da5095cad208bd336ee009f6a70f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEX262000811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8e74ec651044e5aa9c85f89a2f1eabfd1f315ea14044d18a204e24a49f9d. 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/DEX262000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0274a315f7493ec860120639fb58b0a08faa04879ccc58c328f999baa11e08c. 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/DEG932000398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ce62324324d53184c660d43e291aa03b7783655d533228e86629dcd1f1bc6b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:28:58Z), 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/DEG932000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbead2c19fda171ab0bff97b19e41b9a1795728b5dacacad42e3e5d2d43aa9fb. 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/DEG932000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d665dcb5558f279cabbf664ef8bc70b6b4e7b424d3eb5ccc402eb730777085a. 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/DEG932000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eba74434c721e0ea13a47e0dc9203d1eb22a85991f734c632cfc68c8dead00. 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/DEG932000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba108e219c0a804d27679f9b32fdb5fdc7fb9e20a4cab49115f588e8be2c693. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEG932000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d6905991854b9b6b02c8ef52fb27f9ff8f802c300f25fc916d46502ce76d59. 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/DEG932000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9158b4e8810d7a2b452703178cdc9c2fc63bb8ac6de8c2532a836ce8bbdd2a01. 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/DEG932000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce9759e16176da6f94e5a5b58d6c2836f9ea9bbe2726428b280e0bab675e18. 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/DEG932000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014b435d33e84de1aef5dac979a3f210498eff159f53cbf58700a1a4cecb9f31. 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/DEG932000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f947ec96ea4cf8d06d04b3625ee773dee7636e4a8092affcc16515da255c0d7. 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/DEG932000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf99f1cdc3877df989e62be4fd52f2f68785420acee0fc3c5b4f3e2ad9aef2dd. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEG932000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e218bcc9da8bc7eae8aaa3abda6ba064acffd0ffffbde291663423274842b4. 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/DEG932000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df80d3a8f8d514c59a2a2be17d33736615948a3ff3448c3dc142f069e2ddb8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEG932000413.
3001: A Space Disco Remix (DJ-Kicks) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2458da80132522cc523b75adb06fd516d4294dbe263bc2b5be395bf2ba870a. 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/DEG932000414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8dcf6a634bd9658c3c86f7f09905584855b530d5b36da387f054d4c9b22b53. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:26:20Z), 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/DEG932000421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a00c3b403c61e60b747e1dfb1064af5a56f3b44ab16cf91e3d4f82b5686eced. 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/DEG932000426.
100% Kuduro (DJ Amorim e DJ Beleza Apresentam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa43608657b1ba1802cb15ff5feb5bb3963e553a8244baaf9bf89d15586372e. 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/FR10S1439281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59753b214d8344c8022dfc3c0414f410dd22544d355b6958cd663540646eb46c. 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/FR10S1439285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e49ffe76165ca4a8a5efbf95471e01b2eb11abd90efeb99693a8da269afab1d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:15Z), 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/USA2B1602046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8d8e2ec70839337cc985e1b844882e40c3691ea23e9d5a1f3ab367f04d71c4. 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/ES71G2417559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c6790109018460d1d63edde612e04ed2e870710dbc841cf20b522baaf596e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ES71G2417561.