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 0xef0e73f6a7ff2e198d730c21c85641ebb88be2a321c3e28296fb53fbc57e45ce. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed1d7fc8-2207-4e3e-8319-10e27cc5375e.json and https://artists.proofprofile.net/proofs/artist/ed1d7fc8-2207-4e3e-8319-10e27cc5375e.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 0x94a25442d51f776e478adddb694555c22a71b3d5a79a56ca455df1fb778b9264. 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/GX6T42200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad2bfff8d1b9e0432201e275a8d1dc151b29879bbe106a62567d7e343f87784. 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/GX6T42200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0038f00fd637cb69ef50fdc399fa98eddc532401de6e57dabadccc2ab4dca9d4. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GX6T42200023.
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 0xc24f962f5b5a749ebc21904f33638a1f63fac3b23ba7615b7262d6ea811ff32e. 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/GX6T42200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c812ddd47d9f98149e52805be1efccc57d8adc66e9e6eddb18cb701ce61914. 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/UKZW52100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecfcef5552e7fedc890b2d71882599e74252720ef95bf70f1f76e94d65773f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZW52100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09526eaa26493fef452024599a1fc844bd963cf64263852e00e49c994a1abf71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZW52100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba560f9fb851d85632a7c222fbcb1ce159c33d7a11fdc3552a484288d880997c. 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/UKZW52100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041562064e231cc043d90b36c0c139a67e1d52c7732d46aa17d031c3579019d. 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/UKZW52100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eaada89c83e721ffb02e4cfb51dbdcf8bd2f2fc08baa83c26869a65a3bfa63. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UKZW52100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5f3c544083bc8e52d19a4ad62f14d3908c0c331cbdb4e8f0484fbfc7475426. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UKZW52100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a70ef9bd47c6264d32c3c42bbc443ee90bc4d3ced2de69d5dd0d85f61f93aef. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DETB32400556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a7311d32ffd494966ecda747f7c5de65de1e23ccc18ce46460b178cc87b7f6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKF342000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad3c0d350d96e041fb758e318023ef24a26c1ffd7e170c0260dadaf3afc1197. 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/TCAIK2439237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9266aadb25e6cbf8165f470e3e330f4f327bdfd94fe307ad2ae9482d5dd88a5. 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/FR92U2300760.
Cyber Sunshine - Angel D'lite & Eoin DJ Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee98e5fafdd209d8dffe363eba1ef75e113ac765ed13b669ea2f1ab40f9b1541. 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/UKZW52100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3d247614eba8edadf3dfefd3a71f4dd6e9e0fb86e4ff5f956a1eee95cc5ff. 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/GBLV62108370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6913977df3cfb553df188190f951a70112885ecf37c3e56566f9f38d28cba2c6. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/UKN6K2002963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7fda559364e83226ca8882de64f280efc09ba6025735e257ea574ae040985. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM4TX2253236.