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 0xd9a8b644807204e6ce5050412b335a62a935c43a52096334ce8f4adeef5ce240. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14c544be-8ea9-49a5-a0eb-8153e7255932.json and https://artists.proofprofile.net/proofs/artist/14c544be-8ea9-49a5-a0eb-8153e7255932.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 0x77b5aa38c72f1bc071cdf980c9fd9ca4eeccaacc5e238aeda4ccee42bd689197. 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/USXQS1306474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81aea1752adcbaaa4a944c52b4db07bb4832e30c1591c9a8fde2569b226f00f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USXQS1306475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b07c027c0e16cc0576c0454240baf63ab64de9dafafac1a99c3d1c96c60b528. 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/USXQS1306476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b042075734dce7b1269b1add5084949666c70731eae02aef9d63a6b865ed7f. 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/USXQS1306478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf096470c8b5c84e5d1f09d2e9d190054fcd78fd195f2762e9c8117698b839d9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USXQS1306479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83c1af37b68d2894203ce0ba5cfa1eb85565ebcb145c329fc5d91e885b2c46f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USXQS1306481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f34700147af0010d81e421fa9845df9dd7aec1517503e28e1ccc346203d349f. 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/USXQS1306482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d49cc5e08cb0f07db3ba328bf42e5494b4f03a95b55cc985bd895b33fe44473. 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/USXQS1306483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b09cf0ffdac3a677e15f948e0075e5fc0dce695d9e79f777ee1a3cfb5f56506. 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/USXQS1306484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a5e70047adcc72d828c793518d2d8cbe9878fa5f87ec4dc87a3cdcb44e3117. 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/USXQS1306485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfcf50a2611e895d3c2fc34c7a426a68ac7170077b664d59da31aa55fb5071. 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/USXQS1306486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb94af01537bff30c3d4578f9902084d77e884147aa45bb66950ed8c52b589. 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/USXQS1306487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecabccc78fb7a9c58e06e1da95410596a0d5e11f58484681a342d54b7f143cda. 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/USXQS1306488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e161964374ebb2469f7835ea0bfeb121777356d297fabe07a88d9ca333f6579. 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/USXQS1306490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01a7b994e646b482be875743b5030812a0e7b89c8664d4a25a28b244e54e398. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USXQS1306477.
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 0xb723bead7d35a47be21dccf2bf71670ac16c15a0fef820e62f9cc25561b0490e. 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/USXQS1306480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7169039337c5f6f3829e8078a6b1410a4e6e8b535399623afc7812ad6699deb7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USXQS1306489.
Soufside So Real (Def Souf Records Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaddfa8e6df1ae67de98aa435685319aa8f546eca26ab2c7a6aa750d1063f3f. 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/USCGJ0608622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a544c875c9ffe30779ee8d91b27861726edf38b8b2200ce9c5a8d28ba83f1b. 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/USHM80541156.
June 27 (feat. Trey D, Black 1, Lil' Flex, Den Den, Demo, Dat Boy Grace & Z-Ro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf252cb378cbfae31c05ea8c62db8cd7e6012d6f54e419c6d1cadeb5ff042f16. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USXQS1407402.
Lets Get It Together (feat. Solo D, Dat Boy Grace, E-Clark, Sean Lee, T-Pop, Lil' Flex & Kool-Aid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9d624e690340ec2b2c174440dfc7890c138e9a77d564d25ceff25590ebba21. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USXQS1407396.
Pimpin Pens & Blessin Pads (feat. Dat Boy Grace, Solo D, E-Clark & Sean Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74549419122424f229a8cea1b2256d7338cd9a179cbff007b14f65defa5e7bad. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USXQS1407397.