thumb|upright=1.5|Various kinds of mirages in one location taken over the course of six minutes, not shown in chronological order. A mirage is a naturally occurring optical phenomenon in which light r
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 0x3b266c5d9e103f65d63f27a0b3bfa1cc15437acd629cc83ab929bba2b26d3f13. 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/3407ec2e-918c-4842-a7a5-2deed1fe2090.json and https://artists.proofprofile.net/proofs/artist/3407ec2e-918c-4842-a7a5-2deed1fe2090.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 0x69703db86182c34fbcd114fc4f5348a3934ffc60cb9aba2cde871992b9480911. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PLO381500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbcc270d24b4a03457939a637915f758047598dc8696c05ffe4f2ac5753f3f1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLO381500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d6a58766a7d44fb2dbf1c2b4028f4aac3ea8469cb6a8b25573fc2d2b861943. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLO381501312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063cff632aa1c1ecdf58137aa123bdac374d418a22fa343aedbaec5c89b4bb90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLO381501313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393fdd7686cd730cc89b8e64a8c863256a07113375516a646710b24dfa069824. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/PLO381501315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b60a24e8557cbb06d2a39dc5196ce945e090609446356e7cd221120a9436cf. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/PLO381501463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98fe352c1e285e667a4dc7d13c2346fdc90619877957209f45a466d50653f0. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/PLO381501695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5948a1c52da4483e6115bd715bfcc258017937eb6017f6d1e867cf3730eccbc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/PLO381500916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc8b13e095482301313a6cb72aff0cd5741fc037bd7d64f09a93e3aa5576268. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/PLO381500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472e15cb61eb37e56ca335f16733e1dc731b34cfc6e160240fdab02faa25a9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLO381500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad7f09f6a42ea5875e1abb8bbc2b7661bef47d076c86b4ecb93bc7e308df252. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/PLO381500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe307930f63007bcebc3b6eb36076acf083e80c3442b95b36ee5ac471a34a925. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLO381500553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aeb47f4f6be05aec6be072029b9eb227cffa0f65748f53c2c95c7c9045e23c8. 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/PLO381500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38858a73c1dbd29b093096fc3c4da6d7e2c08facf93308674058a22ee4844dde. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/PLO381500592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0a031861d88a4de744d456722e56cac0edf692aee09074e6bd61d6dc56e2a7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLO381500594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003002dcf68a03230882b4e2af857bf0dc636a5d91e493118974a315fa9b8646. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/PLO381500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0146b3556281390c2c53de0a2059782e3dc4b9e5cefa05fd76e763adc0e430. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/PLO381502709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30bfb01cd221a5ea0c8d78a5900c18dcd3956e787690fc0c0b5b6c264115211. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/PLO382003296.