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 0x76a04e13347cde053e7779881320840621151d4a9ccb4cdb2424342ecae3cdae. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb6c2d36-dce5-4358-b42a-8dbd6ae4b094.json and https://artists.proofprofile.net/proofs/artist/bb6c2d36-dce5-4358-b42a-8dbd6ae4b094.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 0x23b793cea11c1b58c5aa23533fd6bd4f07b79f1ab4a3067bd02910c09190f5b4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE5752445400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f223d34ca581cf568516c32eda72aaa79a30297590d363c268c62ff9f8bd0ce. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SE6HN2482366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9d26c36fb7c0a7a27b57552dfce2701c9c252c733a734df005f4e363e21e24. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SE6SA2435751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c14f9bf3075333d403f6b2f3f6eea91eeb1b40534a95e7fd16c73d28647650. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6SA2349254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa927e79b73e249dadfea9b66df9d05cf9143d5c4b40c80069a97984685feae. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE6SA2435754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240cea0e35db9d54c94a83c0dfc097ef5d521632ae3857fdb6d565791a322db9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE5BU2523545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b73c49b033c6045d9355279cd145637f1eb4527f37dd8514fd7f6aa7248e74b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6XY2597627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08957920c6adee1081cfb03d9512430927282d47ad16d42cb8ed21db5e02f4d8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6XX2544057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe54d704daaffe38441f3e10d9df91be22f8c292317c11aab1b24e9619700ebe. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/SE6XX2544058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6127d5ceb2a52ffba9f202396c1e57984144567cafcf2fb48c3bbbc6ba594497. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:58:28Z), 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/SE6XX2544059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3469648f60aaec4301b21fa195314b71cb783ef0c7774eb2312d84f2aab216ed. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SE6XX2544060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f3de9ce2e79869a18c08189743969a0b67a2797d49b027e5d1447e9482c0b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XX2591520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e29d03b0b39df4397cf21cdc274afac1ddb088428b4b7b01f0fc58d23603b11. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6XX2591521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7e79a27f50626b50d3172f9085d035210751225103fda56fc5fe878f306dd4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6XX2591522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb6479d9dcbb9b2792b65761b04037a56dd968a14836dbe1d18a742753c5c6e. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6XX2591523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece412b89704beb1ef3e5cf14ae4092c8741f67b7ece4516daf550a09f93d840. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XX2591524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c75a46eb17839dcdbe5fe0eb19d9d7491632e038f5710b9fc9a230a2f963a88. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/SE6XX2591525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f3de9ce2e79869a18c08189743969a0b67a2797d49b027e5d1447e9482c0b9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6XX2591520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7e79a27f50626b50d3172f9085d035210751225103fda56fc5fe878f306dd4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6XX2591522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb6479d9dcbb9b2792b65761b04037a56dd968a14836dbe1d18a742753c5c6e. 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/SE6XX2591523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece412b89704beb1ef3e5cf14ae4092c8741f67b7ece4516daf550a09f93d840. 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/SE6XX2591524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c75a46eb17839dcdbe5fe0eb19d9d7491632e038f5710b9fc9a230a2f963a88. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:24:59Z), 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/SE6XX2591525.