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 0xacb8c44fc2dd2e78c8ad83264568bef44d6efa921e74990d610d8776ba8b4b51. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/689f2f7a-e181-4633-8e36-e9d70fd1bdd8.json and https://artists.proofprofile.net/proofs/artist/689f2f7a-e181-4633-8e36-e9d70fd1bdd8.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 0x069a83424d092a1e9cc5af983f7b3df6e9316eabc19c98e5da30882245e700f7. 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/CA5KR1038766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc115fd2209d53a356f16d42766e2d4bf67de2d2a54fc21269a764d6a88538. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/CA5KR1038773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5210d4b4a9fb2642efb330c43664c33e572f33b29291a088eb3d626fe5d981d2. 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/CA5KR1038772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea314d6aca40197f1364cad48a4b5d908e164eb4c52bcab66a445b37a1a3afdc. 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/CA5KR1038768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee68a58f79b87b45207916dc4c87f34ffb1ad4007352812e817012ef8746fd0. 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/CA5KR1038767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f0e2f20a10759b58cc7b18e2a1e7c01032675306edc239a4270f88572e0419. 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/CA5KR1038771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6634b397311c29f9c736eaff2e2dd9f8f94d1a3920046ac2b2e6400094a807. 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/CA5KR1038770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd014ae2cdfc5b8abb253bd748703852a063e7ae19de0c203dec32fba15dd8c. 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/NLBW51300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94b840e19e7cb45a155e2c282948dcf4e448dd3e3bf3e3106083a49d2271b6a. 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/NLBW51300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a60a514a3729fe2f2f13b0bb69dbb723446a39193819e1a7881fadc756f3c3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLBW51300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f801805e70efbc0879e6e27656ccf41ad29455c5e0cc4148c68b7ceb2c69610. 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/USTCZ0987078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d44871f8091b2149aa876a5f805acf8cd953aa4b941f2e5b1e004b65b0386b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CA5KR1041243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39725836a2b066c3a4731b69a02c1974728da4a019d18c11460ed91bfe8479c. 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/CA5KR1041255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499988dc22152e85e5d763505f3080faaedb9feb9b03db2c7e78c21b019e9753. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR1041249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd6a9e513b17bef40d6c83f059de24d745cef25d06e845ecab4adf2c2ccf064. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CA5KR1041251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a93ea28594707d222e72c84772a4bc9723a3a7bc49775fadf2f33fd8b93d96. 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/CA5KR1041248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cff79b0e09d18d26e48edf5e4893fe1b6cdee1125084f93deb454c1a150df3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR1041246.
Trouble In Paradise Feat. Sophia Lysbeth Brown - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f944b2a9fef80d461dd7a3ccb57af8fc9bcd76cb96f27493b34699061acbe. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR1041247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff397584849effb64433435e16cb5f70578b5fbbb6695aafa05a482b159d6198. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CA5KR1041250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22740e0fca9a842bfbee7d943ecb3b990ec1a44eada27cbf30673408ce5d7013. 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/CA5KR1036351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb686224064a5b5b34df49679d13185617a83d321155e69eeed04b82477dd3f01. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR1036347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0179cbb13b34d71d166164fdbe6b4674098cf366e7a1ab452ce61eeae58663. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CA5KR1036346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b1dd7a664793ee20e3e61bda0f3e940e1d2746d0da1868816509536a0de0e1. 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/CA5KR1036352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0818afd8e0027f883c1472fb7b40ff097c035eed709b1feea3f8019370e82bb8. 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/CA5KR1044076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c28fc3fe3d1fe16d73f1a7f01545dbae6f7e49f99e6b6dd8c6088adfc7b3418. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCADT1876565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556bf89cca727bfb7252e53e8815b91ef10888c17c68c8f61cdcd6e3eeecbc57. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BGA771400033.