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 0x55554ad5e5de9ac64d809e19b058af4d9f89f3436c881cbca26099544e888431. 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/4408de6d-22b0-4fd5-bf9b-392823695301.json and https://artists.proofprofile.net/proofs/artist/4408de6d-22b0-4fd5-bf9b-392823695301.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 0x01bc9d9329bf23b5760b1df6a688e3320b1e47df7bab7fb94d378f04b6b47522. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/IL7192500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b138cf1a505f112c426f1a500680b11b65eef4ab994823b35af31ba27c0bdd. 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/DEBY41200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e7a8422c59eccf8aa5b12180162ea68247550b01e031d7541140e1ec4077a9. 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/TCAIU2443415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8df14803690b72b2929c0dfe51479c22cc0b64cbade8cbf10573cd5ccf01f7. 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/TCAIS2476787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d517afd0049fcc96c81943f6c265fb8063d9175e252c17a3a65fabd649f47e4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAIA2449921.
Tu Tak Tu Tak Tutiyan - Elado’s Gulab Jamun Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6bb17827f6ba5d71084edc6439bd68bb27dc595689aca6e0fcfbfc0e1d31db. 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/QMXZD1100628.
Tu Tak Tu Tak Tutiyan - Elado's 4 A.M. Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4f21317ebc8206b4f1d149fc4e8de7106ed77df352ed877675a245c405fd5f. 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/QMXZD1100629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6427c3e720d13140d038ae8b2366b7840452ba6e9a610f583fbc486aa3def5. 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/GBENT1654968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64f88a13b1540d916a26b52e6a2d8e1ee337a5440cb60858f731513244e800. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCAHH2311776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bee84b10e27232201be3d69e5c7a9c2675536f7eef12be5b9b65b53eefc6d0. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TCAHH2311835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbe5fba1faa432aa02e7783dd42951fc59f893aa7a47beb329564dc8eb7c78d. 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/TCAHH2311846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc27c76509491790d5d4b1931e6f0e93ddb0048ee68f7f7ba4252efca91b027. 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/QMXZD1100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51514a925f7a267fa9fa1963176ce5650081a3fe169b9d886ffe91b7d4c85c6. 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/QMXZD1100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76bd65d1e0c4eabfec233b6cf945bafd087ab512ba4a3bd68e85f405ab48ac0. 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/QMXZD1100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb138094ffbb998186f771f34dd89643a5493d66d47fb067f1ab33a7ce78f805f. 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/QMXZD1100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc446205a40532b097beb6f572537b1496ff5748315c15da7f0e53da89b769f5. 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/DEBY41200848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b138cf1a505f112c426f1a500680b11b65eef4ab994823b35af31ba27c0bdd. 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/DEBY41200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ee2f59c9380f04ce8a86126c16d6385e99875e9b5c5f76be687a3f6e01b165. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEBY41200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e2d2907c1354144462d488192e740542738da8b4946372040ae3ec6214558c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEBY41200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abb376e6d9c1d0192a82f3082c4baa7239992da2175d5d43d63ba050b7664c1. 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/ITRHE2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0403aafd147e8beb513ac373a3c7a64624e8b4492fff3388f8fc974a9b038ab2. 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/ITRHE2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08259165936e40fbbeec862c2c7bf275030d51d9451efebcfea1ce90974e9d5d. 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/ITRHE2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ab92a5041be688ae84439266bfa2907a6eb05ac9255e90d6e0ab21f420b857. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ITRHE2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c2fb93ba83dbb9a479171e37ced071718065aa20704a3bc4a02afacbcd74c6. 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/DEVY92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3b59a07963d09b73a04dd5315c359f212e769d3d808f4089c1448aa18de645. 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/DEVY92500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5c6b68a0e00a446a53d68de699aa66b79ab36a2b54594c4178a4100ce9309. 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/DEVY92500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f44b95dfd611dd4baf73db788806e77ecdb2cd9503b22915b2c0b08ba4a471. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEVY92500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23f78984fb0f1d1c9b5df5e76d9da3eec93f46409f0e2be6e1b72a35aa33827. 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/DEVY92500005.