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 0x356e92e9bbd9fce6f0618e9583e1fbb3df810249ac01b67f8b2e446dd65e9873. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c05a42d-d311-449c-b0e6-6b8e65b8c08e.json and https://artists.proofprofile.net/proofs/artist/5c05a42d-d311-449c-b0e6-6b8e65b8c08e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Na Señardade - A Quenlla Canta a Manuel María
30 Anos con A Quenlla. De Amor, Dor e Loita
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 0x5236b8f9f8d6716336af38c6d8fc03817e9cf654469ac8cfa6828210c827e3fa. 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/ES5301457702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3d04cddccaa735d3e9fc396f76dc94c6403a65b9560fc611e00fa2e9cf336. 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/ES5301457707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952e0bdec2b12e64229614c17d833fc509a3bb279d05b9876ff4e13d9cefd46b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ES5301457697.
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 0xeef0d4a401b865ab021f740f0079e1dc78d5abc9d8fae7473076612646eb27d8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES5301457711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f10cb6d56fe3df93ea3a71a82c1e2458518ae0e7b64f6b992e6856ec0fb99. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5300821679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cabc1b42c83b8c6cbfb96c8d06f7cdcb182f7aa953e4101b3a6c4360fc0aa5. 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/ES5300821657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283549f78ae135db7ab02363d83b62e02bb69c6d5de11bbe46d2a6388ce89ca4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5300821594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1b5b4bbf54024b4f1d327c843a354f4998598a4cca8c6f6b46411dd61f5aac. 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/ES5300821599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3dc3a1e64c4544adb264d8f8eaa1ee10f6a1fc84a8703bc90c1270516c247c. 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/ES5300821600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfc23c7325c85a06b7fb2670e699ab5897fb629e800f3fd56ad9d4905f6f793. 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/ES5300821601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6559fc0b92751735d1b16a1ecd8ec5ae8d91edbbaf3b37f37b6c699c735460. 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/ES5300821603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a4c01125b879796cdd173231254a0ee6d093bcfa68ea997181d84704fc75a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES5300821595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d9e3f648cd04499255feac80fcaba1331c3edf3e655a7140d3caaae258cef0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES5300821598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf9caaf179cf87f4531369ad6b415a2d1833c3940d7dcf3b5ca4f635f97a18. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES5300821602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0a36b75828011132454696644c1b43f7a845f9d6bf1cfc6f635ca1ebf20880. 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/ES6089831401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc49e0011a28476be0f2c16b43e24c6663fef139a05bfb1bf883ee5e0303849. 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/ES6089831402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b0030013efebd8a98696ca2199473b901203ef1deac8a6249d94976801ac26. 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/ES6089831404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf483d0392d80bf6f77b1f25342c289c1193939320f405b74001ada587f2d31e2. 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/ES5301867648.