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 0x9986156dd1bb22f7375586f951ea834953793a23ca190738954f2d1159c321c0. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92e1a06d-5c06-4ace-87d5-e723456dfaa6.json and https://artists.proofprofile.net/proofs/artist/92e1a06d-5c06-4ace-87d5-e723456dfaa6.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 0x448a7fb00251356f317a623ddc7079cfb3e3a0b9bbdbada92e4bb47e77796736. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NLCK42232270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7c9465a66c6a6285f7373b92c92a4bb43c228c2bd272387505b0a7494df789. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NLCK42232271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d587938d47c515c4ea7cc95b975eafb2455ce7c20420b3c34385872dc7d769. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBKQU1496678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ae86eda1d7749008e40b4814a033986abdeed6db5124ade3c6feb73fbad1d7. 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/GBKQU1496679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0b451fd864ff1501dc3e4748f128cf17a36967f7feafaf73e1cd880362a999. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22281766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a806bdfe16890949288b75b4c75f3fbbd97f27e311c4e65ebfebc184ea49962. 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/QZMEP2179314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda05995e5ddee1f169394afbffc02b8a3faf32901e806213d35a9e282e899d6d. 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/GBLV62018708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad0851b221c032ce3f72a1a3b764f08182442933e82f8170423d50e6adefc5. 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/QZHNC2019767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e9d51e0da026737cc1d8a5577292922f363bd95aa60a14797f0a44a924bbb1. 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/QZHN51979833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68702e3888baf0f7d46ba8f0d02bdd6280062c5dbe5a6a312f43e92c5d064214. 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/GBKQU1902240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c172f24f3530e595da14be32f630d1c4030b264f7ea91044815981d573adb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBKQU1902241.
Leather Teeth (Rob De Large, Ian Jury Remix)
Leather Teeth - Rob De Large, Ian Jury Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9358453ded2db655b8d52be5974776b91bf821723d60b0840e8bdfa078d1299. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2163703.
The Drugs Are In Control - F.O.O.L Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932918f679fae955689507fc7a44dcc393257b71348f4ccd3754fdf087a392d6. 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/USLZJ1424990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98496f5965a5079e86ee91b151a0fedff0fa3c989e0ee10112db095cf43fb0a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BGA771900039.
Nothing But... Electronica Essentials, Vol. 01
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c8df5044cf0a0b7f1a5b13421746e6b229538297ff2aa2866aab6393aa492. 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/GBKQU2182234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa13f8cbaa41bc16fdb0d4fe1a17158a9ef073ddd156b621e8254648c3bafcb. 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/GBKQU1998255.