XYZ may refer to: Music Albums and songs ...XYZ, 1992 debut album by British indie band Moose "XYZ", song by Scottish duo Boards of Canada on the 2019 reissue of the 1999 EP Peel Session "XYZ", 20
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efdf221fc3452b2814adb47e6b9e2aadc5077dd518d70a82600d977c0da320a. 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/2ee9c73c-d536-4c10-9064-983cafd72958.json and https://artists.proofprofile.net/proofs/artist/2ee9c73c-d536-4c10-9064-983cafd72958.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec3e885be0788b8a4e9d5fd69ba789fe68f8a408da0a528abd65257490b2d7f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USCA29101752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dbbb0339ea019448ffdde8204227d1f6e42173c833a9e2c27d028831f662da. 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/USCA29101754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5237b9f6dbc57e9c0c715d9d71026c3d14a2ff8dff094e57d03ea79e9c0155. 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/USCA29101755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901596c260a6a9eab0837b6168e45cd1878186da2ae8bd9dfce23f95e08274ea. 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/USCA29101756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671175ecdf31606d44ae9b97339a22bb8dc0524788ea0ca85742baf93adc01ca. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USHM80428497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12d54fe695691939a26c97b79f6cd07920f0dca20e257993002fce452f597e6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM80428498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abd1d17eef2d4b8b4ab313ef8a927165f55e805008e1c7bd4e324c8dd34e06c. 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/USHM80428499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b982e79c7c0ece7630fb291e0e3e269cee337b576f01244ad98d22c50c1caba. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USHM80428500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec8b859bf231541d5fd2b47502138345e3b16b86c407863d3ea6ccdcf0ddbfb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:18Z), 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/USHM80428502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd2ad8463dec969ecb7184eff7e656bb59b5b122d0ceb86ab2056d194501817. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/USHM80428506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65161c6caf03fbc3f9aa82516ec24e3fc260be810f9a41f226f051d13b10ac28. 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/USHM80597256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9c0ab93cccacd3524f39f0a3e785e57c73dd328989b89639d1b8c0b14b76a2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM80597258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f40037933380e22d01ad4e065d8e9803480a6af72787a07e8375a65867bc8ac. 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/USHM80597263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3342899f9971fd68042eb73956755510712ec4bbe1862a275350972094af960. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USHM80597266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d14da448d400f0d2937daa3a55fee494e627d8563a6b37b643628532c98bb. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USHM80597269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5fa7188c788d9412cf938684489038e1b83e69242f8567a55c247de53e1b06. 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/USA560659497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91c9ad00dec98c9ec910714bd0afcc2718f30ee430036c60e7f9b705fd9c0e7. 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/USA371178062.