250px|thumb|right|Xixa in 2019 XIXA is an American rock band from Tucson, Arizona. AllMusic describes their music as "a form of blues indebted to the desert, mixed in with their Latin roots and a dose
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 0xc48677adfd1413be5b627290e505d578cf9780c12b38c2cdc42649f965fc7bc4. 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/45dda72d-57ea-4152-8386-9f4faee73952.json and https://artists.proofprofile.net/proofs/artist/45dda72d-57ea-4152-8386-9f4faee73952.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 0x5defa0bc2d9e0e9b073764319c456355fe39611e1ba4575230c5e7f003d8c877. 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/USCNP1504103.
Dead Man (Mexican Institute of Sound Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042fffae24cbf2e5f9716eef21fa1a7c9e6631ab25b1d88076f39c6d3f26e2bd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEE351812155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790e8759680d6646034b61afad8e8dd0dd9059fd27a4829de6033e99b61419fa. 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/QMB592000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde341a6d8664bf670db550a2c0cdb781da5d02297f77215cba8e97bb3d533322. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QMB592000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8f73f436ca8772b6d2c87729be33c6f0f95efe424f0e389a92fe259d5084c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMB592000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379396ac6af76f330eb93272f9ad8b97c5755f39cdd79025a072dffe619b6af. 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/QMB592000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3d7344a4dd9a99ed307aa9f8a5d159d3656e638f562f8d7eeeaf8e06419a44. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMB592000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7835cf833f017c2c9bf8927adb952be87512c17a9b94df28d34f4a84bde234b. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QMB592000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2aa461e4d0eb2e9a2d9a5d72c88111f40a60a907126be0e7f66629d08eca68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMB592000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c917dc701b7dc0dfe27d6c17fdb17bac589c43814cbce5fb72d86d9fcea98d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QMB592000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4370f992d3fa3e5c9e656e50b13fdfd359cb38a321facec04c0d1cf51168c0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMB592000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15ed7c6956d22f1144fe3e4255ba6382594ef1cd725960ead0ec123fe13fa2c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QMB592000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde2a8906c506394f52ca42107da0618f00c0fc9a2fcf4fbc43e4e90aaa2edb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QMB592000162.
Road Beyond the Valley (Acoustic Version)
May They Call Us Home - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06063e17ea544c8feb6ddcbcf3d443eaab25a79209a603967da26066b31efa54. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMB592200215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e692ce5721cc74a1a77500923fd9ca2725b348fd57cd846adf85f76e2f42a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMB592400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8a3abd6cd0bc1a6c757652c687a8e007bc604345396d7c6133d596d7798760. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QMB592400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e692ce5721cc74a1a77500923fd9ca2725b348fd57cd846adf85f76e2f42a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMB592400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2ebb663c8c589e025479db65fc48db0a4420f9ca50121a48da837710677476. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QMB592400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dec7269da6cf8b2f31ffacf0cfc56481e5e4fac68124ce8d07f204768cb7450. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QMB592400304.