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 0x5af6fc7d520c2869148b215ca4f82dc296859b00bd26ce6b503e94a0ae01e762. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/187e3500-3c04-42de-bb45-3a44691ff293.json and https://artists.proofprofile.net/proofs/artist/187e3500-3c04-42de-bb45-3a44691ff293.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 0x4cc9fc982f347d2adff77ac2010204608e615c457e602fbdc3ee2bc574f65846. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DGA062418169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0414fdf6c0e870be3c2be75bcfb37bffba43eb99059c24b843c21bec6dded4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:22Z), 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/CALVP2478980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad48dbc22266b0a1ba622439fe7dfe753040ea10d750e2d94edfd55002f6ac08. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:09:04Z), 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/CALVP2495626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5973365e7fa24bebd918d908cf17786eb475e94415ae8d7a31ff0cbc727862. 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/CBEYJ2463609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ebe6885dd2dc90ec2b96314476a0fe1e6aae776e9a298483bd59c4d94976c5. 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/CBEYJ2471141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139bfde45a9483cf6af02630ab2afdfdef0708fae85466211070eabfd2b4d33. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/CBEYJ2472494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04590741c15db44450b009bbda4b6acbbc4fdabfbb6403e0f95d347ab08d18db. 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/CBEYJ2472386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199923f4c14916efc513dec35ae507ebc935a9b953b8d9ff3764ea9a323cc509. 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/CBF8B2450873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cfa3e42c5692c12e41d6274cf576fa0ce5320f6cf8ac6798163f5920d817a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4TW2546765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ed058309fc183b40848d236b74a7a1117a28e1abbdda15b6e74c22371e9b00. 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/CACWV2531473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c72ce90a3041eb1b88076b45ea18ad11d1fba8a2d9044b323741c6643369238. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CACWV2531442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a317e6301d745ab88d7a11c88d3fd2a1428b958bf4bf6a1cbc20bb33a517da8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT4K32509016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13423fdd8d94d3d06571763f4f3f0aba5ba0e975580fd9656d2c55091db46cd4. 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/QT4K32509017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502dc3ada6d0cdad30cde77737e561775986ac3d3b8e46122c6e2e34b712961f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QT4K32553841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06de2a11abe4a9919375b50a3355ff510788fcc405d293a1db5de54247bae47d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX762594289.