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 0xe822848d0376dc0ff74b221e01609bdbf42f7740e4d5ede35dfa1f4a94375b9d. 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/e6862dfa-6648-4fa0-a779-58adf149c6bd.json and https://artists.proofprofile.net/proofs/artist/e6862dfa-6648-4fa0-a779-58adf149c6bd.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 0x06432ace9955807ed92ecf8ca6d16b7b0b937e975da37384cbb1d756ea4908a1. 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/BREMI7000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd026c9a2a653ddd0eba47efeae1e67a5dfbc1b7f81e09d2725fe4f553b3de40e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRUM71901416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0cbd29084fff05a56c8dabfbf08c3318bfce532b396f75be92448158f77ebb. 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/BREMI6400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8357c188c60d43123aea362ca6903cd8d6b9493f7a6fde9d784561d847521119. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BREMI9500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b9a40bc34002397d773f58a7e0c5abcefece9edbcc4c986a08ffc7a24b3da. 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/BREMI6600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d46c4a76a3ef490f83fdbd908a5085c2d7a7d0d1858533e9741b37bce817e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:10Z), 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/BRBG81900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01909d4fd6e023b0bf618b346141068ce204f395418a50c84c11e104426acc30. 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/BRBG81900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83036386a807f271b92ec47a19a153ba10ea2786bf7bcf372509223d86230b05. 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/BREMI9500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83036386a807f271b92ec47a19a153ba10ea2786bf7bcf372509223d86230b05. 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/BREMI9500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e296784384af6331807fafb109ad44e431abf09938d2ce45d62443d4bfc61. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCSKM2400118.