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 0xfefd86c0bbb0a9d7f2c7639ac9513fa6b6df1b5c0b013c5dd64d09b7f7389f91. 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/55069a7c-b713-43fa-844d-a4e34e1f68c8.json and https://artists.proofprofile.net/proofs/artist/55069a7c-b713-43fa-844d-a4e34e1f68c8.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 0x124e4de327f4aa65bd2f8974477aabf5a803fe131bb3ea68e0342025758f1a83. 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/USAE81064274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb72a145d6e06e1ca04855eb915bf5302154bd640bcc8be1cb7cf9fe4ed6784. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/FR5R00902906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a327c7a5d740e9801ffa2147282c9f93f54102c75acfe3c67541c8cd4592ba. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USAE81032625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703bbbeae8dd492cc8d26a1b1e32e963666cd680dc7105d941b114c2941ebaff. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USAE81032627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dc708c2edfb1af0ab289afab96310be0ba2f205298a9bbb2adf4f52cd37966. 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/USAE81032631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f008b1f48aa0d55c27b2761348f15626a85ad1ac87bfa32834a35865785ad2. 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/USAE81032634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed9e4408c0ba01648024c0bb980a7c93ac9c1149699daf40da5ac7fd67bdec3. 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/USAT20403639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf17e279b8c66c1ad3d1db8b1fc1b4b32225c19dcf56f65727dee74ddcb01c. 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/USAT20403013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7062934109b0e15f09c5d588ef9b541afb695278f808871e86ed5a8fa0fd5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US8AQ1010566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547b86d167ba0ec37eefdfb50822cf7764b1fc0c131b259dd1b965c9850213b. 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/US8AQ1010573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a90e82b834a001e41d9a8a0f1bb872d9ecedec0a3829eebba562346ab0cfe96. 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/USAE81060824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723cc769e36f55df5e93546d0e29d241ad33d10dc935ba401315b2728591af28. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USUYG1011033.
Murder Dog - Celebrating 10 Years - Best of the Best
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536bb2164edc3958040f2cda96c699e4ce92b566073e0ee833e04360a25b9d5a. 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/USBAE1317482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004ba3de7e04e1cbdc80087e32e432a424bf1435a69c1f53cf49b7ade2c005c0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US8AQ1010718.
Dam I Look Good (feat. Young Dro, Big Kuntry)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69971ea5b3aee2425ead204f70e4ef81db234e3db6941da0cfe55ad39a64b036. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US8AQ1010722.