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 0xa69c348a07c45b5f24ecdb620ac3a7b64378dc3d81651d8a704fefa9c777f3e7. 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/c1ade1cb-fe6c-41fd-b5af-7257e525552b.json and https://artists.proofprofile.net/proofs/artist/c1ade1cb-fe6c-41fd-b5af-7257e525552b.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 0x559f1478aba38b147d49e6633749278e86673b5319d2dced73ac18eb316f73f1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA61806151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc9e5a5cc1f732385a1a5be888245eca51d40cd1e2dc282534f33fac20abce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6M2186388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370c434d06fa9caeb49d40330ef889ee90bf658042636f5b4602acbaacf7e20d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6F2174672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23265da179f5a4082364192208b66592caf44c2d8ffa86ac5e2f8ad90b5111ee. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZFYZ2266886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5266d9f23622616a55c4035f690a1d3914146148bb07958d925ad384fc762656. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES52238511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1903cbbff46b59fe82468dda605583fd03c0c466cbeea5a16cc21554d7dfc1a3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6N2283926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7bd47277ebe898c99b656b0f68092d04d0337ee53e1ef57f4104a22b0474ac. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZPLS2254506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8f99679442a3ec141f31fab6bfac0db59e4a8bd13cca40fc5321a9ef57c40. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZES92360582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14870e079d348bbf32921cba149de00d71919a25c76ea985ca0511db646a0408. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHN42326194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8f99679442a3ec141f31fab6bfac0db59e4a8bd13cca40fc5321a9ef57c40. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES92360582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97be9402a267a8eaef86aa8b4fe127cdd7f90bf51898eba924c3826a11fe6c7a. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZHN72365742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265ff2495d760da821c9826288bd2154b4e12044b73f84840626376df01e0d01. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2412565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfefa7333f8a56316fb31120a95ec194daa8712e9e6f11e6bea6ef50d7db662. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMEM2586597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb15088831afc74aa6e74355b39a4621e0efa94ecd00eef0d292f506f0b002. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMEM2586598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a908e4c6ebdd0951b412a4b84829524ad287039e5aad57cb5729f2675a8a94d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZMEM2586599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be7bf3e9eb77d41bd94a454b90920b3f14635924c1edf5192d976c9713afcf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMEM2586600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3d66e94e075a9a982d6d98f2ec4e7870351a169133cb5674df590c3bf4e7a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZMEM2586605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33817cc7a6abe1ecd101300d0432899faadfdb9d39732f311e8a45bee3952957. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZMEM2586606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58edc8f0d5e8b3ec50c2be91f6f855251aa0095cbccab98047621a1821094de5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEM2586607.
No Land is Free (A Charlie Kirk Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b66ec205c7f68904c0df6b60fd1568929bf76f95ee5a5e38f4b7631b189f2d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7W2585572.