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 0x57532f91ab8f8ad9903e836f839d41e23dfbe80519a130751f4efc5959e574fd. 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/05797653-d175-460b-b9b3-5b7a3fcb008a.json and https://artists.proofprofile.net/proofs/artist/05797653-d175-460b-b9b3-5b7a3fcb008a.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 0x4e714e8e26470d545bb6b03225ea70f7f121667eedd72c31586d6979211d644c. 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/USA2U1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ede30b7651a6f4434aa7858430de47bd18209ab2a50bcd2f885e1a559b88402. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USA2U1000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72899990f1b1d45e95f2c9860f3c5099dbc702a9f1dd8c01fdd7236338405d04. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USA2U1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4d3e0ab19e569864fc5816275ab4bb93032877cefbfda6181ac44241e468ef. 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/USA2U1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c45c74154166ce6d6e016a37d8387c1a05f91a302ea569420cf6c3d67230c5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA2U1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd449c4b6766d3ed3357e39430a2d0d04b37b6e8b5d67e13143052fd40ed143c1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA2U1000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82f48b454b9c594900f2eedfe0ce3b7f42eecccf1cb86acf0900c88da97ff12. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA2U1000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ffc4a61c73dbe3e8d579727c075a624562129f20bff43cd192bdccadd7a938. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA2U1100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c40b72ec2561288f9314947e5c5ee3cc3a9bbdde0303eea21c3b8766b46d6ed. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2U1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c027e0611189231610752df0fa05580a5c6a9582d1b77fb9e17b45fb58adf. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USA2U1100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03253c427f3fdbf1c3ac81d66a295d28bb0a258ae3d86e47d1477207f36cde3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/TCADW1890490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01711fe9116edb282cc79d9eb9a9e4be2356e6ccc8cfd50044415e250bb616. 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/TCADW1890492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a94c6d5ce78876db3ae8a3a7e35b16b2cf7a9d54a7c7c4525a9c7aad804463. 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/TCADW1890495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7cb20958efbf26f8c5998a3e80f8fa69cb01f91f537103fc0c5fb7ba61d74c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCADW1890497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28246ccad96b3ec2e682d4f46d52159f450787435d1e9ac410a82ed7bb4cdc3b. 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/TCAER2087736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3b5dc2f7a03002c38c97c853caddc2233ecb968fa79c37c747c815b707629. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAER2087751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb047b93274b5c8557f56a6049b244f708ce1b170d63c24320b8521ddd13588e8. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/TCAER2087802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a5b72e59444738f784b38052c09282d17bac58e16ef877b34192c299bab3e. 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/TCAER2087805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd126e3ca78ac249421be2370b1b92459f547a8ecf3a03ba4a05611a9eecd48. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:47:42Z), 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/TCAER2087811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090cf9ae7d6808fe3cd12279fff86b789f51e7932cb5b95c8c2e2fe38e55f763. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAER2087814.