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 0xe6565198798badc293e5b11a51b86d4a7e5bdce0fd5c43aaf3257554d957f601. 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/b4757c5b-be44-4787-aced-17ae6d2b59d7.json and https://artists.proofprofile.net/proofs/artist/b4757c5b-be44-4787-aced-17ae6d2b59d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Gather Here Today (Original Motion Picture Soundtrack)
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 0x5a6deb3df778fb2292176acc03d725e51e6c51c85812997d75c1fef80bd43895. 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/QZTBC2440902.
What We May Be (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35ba9828b818ffd506235b20e440cbbdc6fd2b3707e7a1e10dd873f6934c98a. 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/QZFZ32471426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a97ff9986e7f056f55766d6b7b04c7d3025bb1bf203817806fa9b106c0df6cb. 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/QZK6J2384887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc4d10ee9322a5ab1e84bbb7728f4abe43f1b8813f72f3f66b1b18b2e40336. 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/QZES92316971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba115d7fdbf8a499e559a71d957bd0e304186d5cfcb2e9df475209782d17de2. 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/QZTBA2272349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f462ea673b17dc1fdda71f2808b388caa2e883ec2f802d8d6c9d96eb0fbc58. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB92297046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03d08c1b11ac912ac119e85fae4049a79109ac99e11fa12805fa15015ca4717. 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/QZPLS2292957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e606b5e587d00c903501dcdb9598c90e6c0c55b0e4f09bf7a6d9b8f48f118a1. 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/QZMEN2232062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e91dfa82fa6ea2897af7bd0139804bf3713c77e3a4de3cfeb24b6d4368a1d9a. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZK6G2293447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf810b5b8bac1be03b3acddd8e11707ff145221ed19498cc74464fbb66e675dc0. 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/QZK6H2282762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75e473c9611a462fecf8acffd477f163e7d30e0fe8c4c74ba3a92a8808fb19. 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/QZK6H2243638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c4690101d85cbaa81e07dfb1df72e4193874b8434fe21cf86c885bf751f6e. 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/QZK6M2275483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf726920575ec03067601ceca99dc199254f19ce9f2245827c490bbd76af719b5. 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/QZK6M2227240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa491416bce30d98239b4833d046eb7821459ed9006684dfbe25bac2a574cca5f. 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/QZK6Q2257850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e0e4c76be5a1670869f0def66d9371837f40520b56f41aeac5644760e94a9. 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/QZHN32204572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70dab72c93e3918e75ccde0dc1cf618fca1a8d54c5c77e6dea94cde7d51e9d. 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/QZDA82290961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d96e1f4206ec2733f121d89bf1ca5b5e137cefa1462799b720f0985bf597f9. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/QZNWW2178762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6226bd53bc0fbe3cba0c317aa97a4b87a962bafa3cf0a78ef4f7a22d5f74e846. 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/QZNWW2178763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845bb06e177379d10237084d914b2c26e1d12bf19f7ca3c99a0058328d4337a6. 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/QZNWW2178764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a604f0f4d9f10ac36bb7443262b6b0bbb07352d44d3b0e6c7d7189df333c74. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZNWW2178765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a136fc982675afa5f2192eeb545f7b0e3267f7fc100e95696bfda5327120b03. 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/QZNWW2178766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8f973bb0f5d288709834e9835e6afcc5442004fad2d2b8fd83fe12dbaf1954. 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/QZK6L2180956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8eece1b80e89c19a313d7206631e7dc51553b956ea0802542e995b452535e7. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZHNC2153836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3d32fb835b1290216d0f6200ae8a624449513b9b25db0b924fb7a2f867adac. 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/QZNWS2086711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3acbb67592a1190428b535600dd500514514ce53d4e2e0a839e89dcbe393c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZNWV2023629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17ed83517a035bb631b39d0716d901633d50d6b1c5e8d324a1033e5a8650696. 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/QZNWS2026820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24afa751e9b60f8321dbd515b98cc9df4224cc0987087e4c2b38a74b4c31d2d. 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/QZNWR2091654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881c80ce9fbd1c5db7fbe784d51a7c01e25bb2fe3fa5f23eca28de601aad318. 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/QZNWS2034579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ff681b27400db1c26718d9d7e9d2dafa9777befba5e6710f288d8565ac02e7. 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/QZNWQ2066821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8fadd76c54e590e81063598f042746ac1a776461f0ba8be552a1359f79eeec. 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/QZNWV2022657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916689915dae6a65b5d3a64e3d019e6a0fa6d964e4ad5438bf1b29d8d22445c9. 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/QZNWR2099343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5b4a24fb85f3affe3a0c051c3d1ab21c44cfcf19b291f37b4b6d55c009bb3e. 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/QZNWQ2075678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec834af34d89f221bd199446db30b85752f6f4fae3f00c8de6b4ac307454366c. 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/QZNWR2036207.