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 0x083d366fc50f53647461700b24e873e0950ff839a5742117f310ec85ba61c3c0. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f210f1bd-b95a-4389-8c46-4175a624f418.json and https://artists.proofprofile.net/proofs/artist/f210f1bd-b95a-4389-8c46-4175a624f418.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 0x79209df9718815f8ce7665a74efa9bb5ccd37fccebf68c6ffe3402503e499457. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJL2534178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa982c65fae824bc01c4c1eec1724d0ed4de97b2ba277d9ed8243ff4813909239. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJL2534024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473b5c556d73a66a13a7feae482e786ce0ca9d34fd8dcf401d05e90c91505d5f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:41:46Z), 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/TCAJL2534226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7dc94d524bb2440b15959d32d230291bfd6108508a335b02278cc1f6c59356. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:45:54Z), 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/TCAJM2534206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8260699576741c11e80cd28191f627f95e11df7c38f9b03ad3aea3e97440c7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAJL2534141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd437e4a702a4be5d4a1dcfe0bb6bc66e6465c2488fe3304c269de7af763b93c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJL2534194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607c47a7e70d8e7b8488929dfd7387dc2a35e2390167b40d592bc477c1fc5aa4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:48:43Z), 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/TCAJL2534045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdfbee9f5208298de5841dcce3ee0da82747df0e6ab5f70f54aa19ee76e8e1b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:26Z), 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/TCAJL2534246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81883f6d0c1804c2ae4c2bf025021821ffab488dbbb0d9620bab46ac294bf1fe. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAJL2534165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe41d50488f97a7749c1e714f132fab4eec9200b5db84ecb05e54c0bd0347ac. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJL2534122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed97ea2c5aaafc0d286a60b56577c53424a0f2482d29b7259ab6c9b0e893600e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:41Z), 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/TCAJL2576815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7257859110b6232c327a384d4892ea8ad24c06ec9151e3f63e6d0316eed91c4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:34:03Z), 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/TCAJL2576708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096ebb1a8b3217ebbafd16433f8ef395e45f195c9fb560bb132430b86569bf5. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJL2576669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12853d94d25e789634286a86ad79d70c5d125c64f5abe146eb70edef55f39e2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:01:18Z), 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/TCAJL2576960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ab40e68a953b79c0e18819db9336bf00212631fc88cd728858e84845e6c343. 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/TCAJL2576734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b8f4abfa0e4e1b73fdfaa2c43984116a3636e7403e66af96080358f8fde73. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAJL2576701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca21e5cb416ebaa77e9731e5e4741df67f4f0b7bda07a43a26901349d436a7d. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCAJM2576887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ed8582dcbaec6b5044b2365d37448bef4599917e4bda58f61646680270d55. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAJL2576867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529fd5cd024b4280bd833e096ca0ead7ea06c9071ca89aa299058fd1489f184. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCAJL2576847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa985299677b47088cbe841593a6081fe018a4f83add828eb4cc3bf8b665b38ae. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJL2576778.