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 0x6403aef13037eed30347391dbe46b6a96379503aebce15b2386acc28841dc38f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdccb269-fe0c-4360-90a7-3977669a1304.json and https://artists.proofprofile.net/proofs/artist/fdccb269-fe0c-4360-90a7-3977669a1304.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 0x33c80fa683d612714494f1a4df856d9cee0a3be9dc84254e642bad1df8f4e3c4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US3DF1952839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb93d5903bd1f8cf1fc0b3fc2877e6cf66711b41fd48e490914b03322ae86d57. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF1952840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00ac03c9a98e6e0ed30237d79733b0a247b0bc33ae47c831a2b9549518a4328. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/US3DF1952841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95026b07dfaa1e1c3acbf4f8571ad02cd03b8aa51f58a6fa6a5a9e943e9c710a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF1952842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5c4d603db34645a11bf3973a950e57451aec7413e17887f40afabc5024eb4f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/US3DF1952843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aa9cce5f6a5af89b2ccf0f8138eb5a0443b7a0d9486263b7bcd005fcccb54e. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:50:37Z), 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/US3DF1952844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f639de028872f9c8b3e2a81ecb84d5cbdb2f8df0c312c297fc7d094896aefdf. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:01:29Z), 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/US3DF1952845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0992646d4538990e7d558f6df68e70b318fbfc54063ab44d0062407a1a07ce97. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF1952846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9adf5e5de2693372dbf171b21f76c206a33a512c12be3609e90a926f8a6da7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US3DF1952847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76420688a441e29ceced523e7f4ffb02fa3c1d68ed5c2aec5b3ead38e736fca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3DF1952821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5a59237654796cedb124240745adaebf560119c3e77357c7e4e4d4166f9f4a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:38Z), 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/US3DF1952827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e277d1a097a60b0ef3646bf6c234b001f3c3bedf8d043b14e19b3b24aa07fcc. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/US3DF1952834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cedfd6ba047a54305faeca37b6575f7c723460dfba2b32c0209a515c53cc4d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:58Z), 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/US3DF1952513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef40f96bbaccbeeafecb3e56a12475fbea64577b1745cbf312774bd5dad5977. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF1952520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfdf24c074d426ce672059f1631cec56cf922f5ed3ed6369293f5dbc2cfd3e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US3DF1952523.
Gira 2007 (Desde la Cuidad de Guatemala En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb782dbd531a58a9e76d305fb4c21d81dd66e8acf7dab7596ae828e553b954a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU6175010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4974690b3d3660ebe1bbeeb34f13883dff45ea8d618133f39278ba6fb66ba66. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU6175012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b30a40b38f828ac81331857b0542227db72207e4ddef1ab67bba974fc26ec22. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU6551849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a0ca1d731bb7731e3c100548c9a1f610383fc92c1a354eaad3886b310c0e3f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNW72271878.