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 0x0c0915e35052f2133a191cafca34f3b4d4128f156c35b27e96102aa682eb313d. 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/d95ae27c-37e3-4231-bf95-d9a98486d0f6.json and https://artists.proofprofile.net/proofs/artist/d95ae27c-37e3-4231-bf95-d9a98486d0f6.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 0xc3a53426271ce85f295a4d2ec5a6f1867910c2cf087ed616c5c851d7d573bf00. 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/USCGJ1963633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e25523cce28f8a2338eca7eac30c0c95dd883e176dcbf5347964ed2fc8d1c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USUM71820356.
Because You Loved Me (The Voice Performance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86a7552a6cc3c9fbf157d75f63fa5067e076d43702239c4d22b8afc46f77eed. 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/UK6KW2000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c7e906031579d935b6e950f60aa3fe76af26d16ad98a15996438d6df6d8ed. 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/UK6KW2000288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccab27c9881711d9b7848b52d445227f6072e093b221fdfb554461c0a6f9e9ec. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN62132245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe512ff84295b3ded502dc8ffe421237a339bd096e812ce38b294f6cca7be2930. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:46Z), 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/QZHN62132246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c85beb143d05dac35eeb0ac6e7a3b09e386098a6fd568a7368f03b8b53786d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:34Z), 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/QZHN62132247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada3476a251a6ee0d976e8b21e273ad64a93deb9e4e72b0235d2b91ab4c4bd37. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHN52122378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c01eb3456c5fa0b6881c8d870682a1820a36e807b4afce2145e856b4a89eae. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:42:24Z), 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/QZHN62132251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee7ef0e674079282c8b6de60ea9ca319554d994dedbf6305d4013839dee3e2e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZHN62132253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59472f1b303100776a66974cbc3d820b4797b6b56064165b05de7a47ba6ef024. 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/USWB12306991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65634ac71264e3db663d9186200bb31cefd54783fce8c4cf9e0fcc7546f4ae1. 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/USWB12401572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc1c77a223384196bc20aff34a4236617fbe15b7cddbe81020acbe0797275f0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:17Z), 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/USWB12402342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59472f1b303100776a66974cbc3d820b4797b6b56064165b05de7a47ba6ef024. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USWB12306991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67448012c4f249d2038ae1a1be3b124d695c3e51a99d9830e52a90e7b3a0e36b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USWB12402344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39347eb1deaa7360888374e0b48454f7d8b37622703db72f770c14e41619a404. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEQ2005902.