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 0xc8b616078845038be72707d41b9e94da35a32fe83058b212d2d1287b7f1960ca. 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/e9d39d17-54fc-4b9c-909c-00c2df63b1c2.json and https://artists.proofprofile.net/proofs/artist/e9d39d17-54fc-4b9c-909c-00c2df63b1c2.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 0xe11faae6ea43ecf585aa40255ef39e918740da3ca917db06704581affe29d455. 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/QZHN32465540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5fd469662030b0704c41e157cc9d8f076d3bc6a50f060ac1e15cbc91ee226f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZHN32465533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4851711186b5ff4476b5f92e3c3966aa40548f7e5b243669716f094b549ce625. 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/QZHN32465536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22ba58121f8a0da630185007fa546e8a61d474865bba2ab21d8cc4adfe3222. 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/QZHN32465534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ff4ad5baf0d824103984e5874958ee1286a7cc5349f2bbbd1d611035520de. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:26Z), 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/QZHN32465539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc291385abc17e8a8a2ed2441d7a0e64d0b739854c76e4ff9318ed4df8d5280ab. 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/QZHN32465544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917ea12e64ba8d40200206d49ca347b3f1a48b0d828346aa10af7bac8dbf472b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:21Z), 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/QZHN32465543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0e5ded45a9ee9862e936e5f134873b0202780145136dd3f170d7fdaeca7b1d. 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/QZHN32465535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5629881b2d90ded55081dc1b81adc7bb3c64e69932e5166e9b1b41cdcae791. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:19Z), 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/QZHN32465531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d036e63fd4848cd3920628e868692696aead38d62fd77dbe7f93843a865629f. 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/QZHN32465537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebee282116ef5fb2495e540300ff1f8dd34d9836f15788ae81aaefca427dd13. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFR2388160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf952ae11b41605297d0e31350d6748501489df2d787d683c5a48c283cc00f6ca. 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/TCAIY2451770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd1b9d64d24669d43a53362649bc949acb7f104885edb8f7df80eba2141170. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZRP42547030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb1ca62fa3e121a9565674f8169bf4e13fd1d1e4d79205ecf587c070dcbb7a. 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/QZWFF2571553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd331a3f83a4230016c6a87dc3a1e1a67b406569b1c0b3dc207fdbf3a9342f8f1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFF2573539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a969ed04712213e1f9a3d55cf0b29186c811164a917e5a7180a83505701ff4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFF2573475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa884e0aaf395af2c690634f470f8d37ccc7b97145852734f17eb6cf547c6f764. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFF2573522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67171d646a51722f2d9d38c2c6f0820baf89a1f4e673183a0b09a294c44f74d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFF2573519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd58127e3b339b9c99fa2daa2851157cffcded28de97bc5a7a40239b903e4fc. 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/QZWFF2575483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231e9c1f9035a056f5773ca774afa37556cbb40bfedeb5c31660535c7492bd9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFF2573533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad637eb20861234beb0dba81672eebfcda0ec26e1945dfe1f7083725164e07ec. 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/QZZ772598592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfccbe0bec14d83cbd9f498e1d7db34ff774d8fdec7465da5424fe17a590b75. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7V2525201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9608aaa70159191ed1aabfa081258eb1929c6d06ba76824f3cba9476aedd1fc3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ7V2525232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a87c641650b0f6cf4e9c43c8262fb8c0f198c7618ef916acd999a77c72455d. 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/QZZ7V2522978.