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 0x4b784f18dcc0f40a0f292540898d9d14f59ff9bee4c8aa8306a35916d659e85a. 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/e27f169b-4264-4295-9330-42bd0b3fea03.json and https://artists.proofprofile.net/proofs/artist/e27f169b-4264-4295-9330-42bd0b3fea03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Are You Down - Gustavo Mota & Evoxx Remix
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 0x41b68007c8cb25cd295aceee2d459226308cf3debe509836a1cd78ea87d5a402. 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/BEIW12200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e0c9e9f3ebb041c7d29f6aec663a50e8f46c328d8e7ec73749e508d61aff73. 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/BEIW12200456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5829d0a24216915945dfbcf8a8944645f96a3bf18eeed7f64b200fbbc7fec0d4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEIW12200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab942f47cd9fd2f82ba476c75de1654482fdb259a98b429186e8e94650ca0b. 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/QZMZ92008581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc0737330a0c5b7955303d4bedf2cfc9744980a83902d4e602e5f06662c2d60. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNJV2089268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c9ce13f5636230e62a1fa162040c8db0acafba49958a809ce011f8737f3623. 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/BRUM72301318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeedc5bfc3ede11c771cda0543572cb553e611ea433c4b72a86a9c3cc9aac122. 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/BRUM72300785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5832b2c02bbe3ae2b5ead2fbdd7f4c5bc4848a31247ff88e5114ee3083531. 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/QZTRX2362969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed3d2a835991522307a1279bd50eb1f6ae239f11b572bbb581fb0fee5ff6f47. 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/BRUM72300588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd1c6979c821cb37146290eec1b2ede9f410915a47a0644ba8768ce6e789f7. 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/BRUM72300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808e621a7bf5e40c6a89013905d66ac5cc92eeb8f1a4353de1a4d30361e217fa. 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/NLQ8D2300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c272447768b8a0526698c7c615b25f8632788bd94034ea956b02d080b2bae0. 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/QZ5FN2361377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4772441f06bd3d0bbdaec4494802660d2376a5bdb97a9af1bb15a3a5013a1c9e. 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/QZ5FN2339609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce0429a09900ba9860d278ce49ce4540a73d8bcc2afba7e1aad9440b4371cc4. 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/QZWDE2222561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec45ced183942cae23111fc3b343900979c6661b22227471a8976e3468eefed. 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/CA5KR2311225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1408320d1cc052fe477efddc335cbe754e45a8da5b21c315d87a7747202e50d. 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/BXM4K2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce5fb16dc0f83a3899615ac8aec3c5fd26d2dda29bebc63bbdfb16835a5afc0. 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/QZNJY2152071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb26436c57472ac0dcfca9dda55a53fd236400931b44c68b04dfe2fa9746636d. 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/BXHBP1901129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628fd63fcc805476dfeb3ad7f255629a4d669e4a59e7d7a3e892acd5a5af0664. 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/GBWUL2117427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80cfeedfcd9ab5fae9178bf7ba97c8c4a7a874f192c3aa9995fafe3dfa4e54b. 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/GRERA2102497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf7a69f9709487d76a15a80896ad978a8e482e10828a60b0081688e04c38f15. 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/QZGLM2110583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e08f948868a51f55e82e189b19df47c3efec2bebef41509a5292bd4a64b3605. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:30:54Z), 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/USLZJ2143530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa3efacffee15080eef96cf5978c14e1c8e48351cba8ab71b388be7b51debd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG2140364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176fb57026804ea1f29a1824f053fa21038e34d8564e5f8d10a8246360193d56. 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/QZ5FN2113027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c190f354ab0833f36b8bb31d15b86fedf54a15808eeebab1d07759e8b6bc6ff. 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/QZNJV2026383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe86206597a8453baefa55d107dd65168d7e86fffd1cda6cdce046bd28749e1. 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/QZNJV2026370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a0e14ed8a6087e29254b40f5b64d281f331a7d5939cee6205cd6d0111b823. 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/BXG9S2000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa773359c29dd25d8a43a7f1e3c6d86f3ab89d3177f00ad60a70e4ad76bf0af6. 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/QZHZ42091404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6412cb8175b9cd3861ecd6a174a7675f231b04509685261951a8b6060b5dc5. 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/BCML02400004.