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 0xe38ed0afb49da2f180a4d0e18fdc285b9a3e0552818080bc49e650002048f74c. 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/5dff561e-57fa-4888-948d-77bb9cdc0e62.json and https://artists.proofprofile.net/proofs/artist/5dff561e-57fa-4888-948d-77bb9cdc0e62.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 0x7267e468a7149b26973e3339b39dd6fca30b2d7fa8be944c82c9d2395597c79e. 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/QZK6K2422551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a76698df0ae0c93091a9f1f41d9e0cee5c3c84e0952477287882d7911e8a0. 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/QZFZ42495403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f769f7192d630e3e2c5eeb65e863c3f055e5af911822ca50abad3f240d4eaa1. 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/QZK6L2467583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0335085a6843dcccba3a475131f23846f12ab7d7d527fc884dfbd6fed3406a35. 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/QZHN52425735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf4ec2830b9e8e74dbc674671f61d34d8e8d8c51238e34ad33382124f4f115f. 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/QZFYZ2427213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa885ede5e44a12923f835175f480e6a3eac48c697e886edfc298585cdf34d817. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6L2484462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1123cc1f3622afca5a753769093f26ca3e889a4bc4cfa6841bc676edaaeece6. 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/QZK6L2459165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9e8817ee8ea54a076539be27399914695e064b3592fc92ede00acb551d3e80. 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/QZDA52485473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e4516d04afcebb11a7227a02d8a911a9ca477e671eeb2ecb0074985ca1e2b4. 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/QZK6L2488009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcd4530181258630a080138d70893d146bbf5e9a61a75f71b671845d8d2151f. 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/QZK6L2488014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553f97a77a281d19f079148baf3c2ea5eaa3ad3e53893cb01fc5f6a176acbf46. 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/QZK6K2422553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc20315ab1e364195a693cee095148b704be7c4bf6b843af3e965788532c7c9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:01Z), 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/QZK6K2422552.
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 0xc1fd20947d7251d0ecfaaa3f2b6961510b2cfb3412d7a61ebbce5b2cf479a277. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZFZ22487881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4798fe8bc685500281bb6cdcced99cf39e78f2d0d5f95d7c8a30524080fc7b2a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHN92451666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea71c4226811fe69eb2c9e0df88170e6f1f6ef50c666c56e3074bbb98cfe720. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6L2487982.
Bling-Bang-Bang-Born (From "Mashle") TV-Size
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ae84d071f88b9db198420ea025a9073724a68cba931cebe18e1c75b1cac2be. 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/QZPJ32344003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36971df51fc7e1955f00b163e50dfa436d27592105e4f24152c5f6996b34c70f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6J2292041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d362cf369522ef798201aae853210feb9f7f88751661721139978b58ca844c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWQ2119809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a516d5218931e37994a574cc361827525a88fcc7ad879a1d51ba85b9612727. 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/QZMEM2391513.