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 0x56b7205a5c1d1660639a8626832377568e9334889ec1158cad63c8ae6f86c8a3. 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/27745b39-bbc9-4feb-847f-c0474a5e9d1f.json and https://artists.proofprofile.net/proofs/artist/27745b39-bbc9-4feb-847f-c0474a5e9d1f.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 0x8dae905acc7bfbe184cd780047953845a59adb63e73e7dcbed7f6ef5f5886376. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMEZE1825419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f6dae23ec4491639762eae1c3452fd54d90e0fb19fbe81607f61f26ed5ce6. 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/QMEZE1825412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc234aef79b4fc1b0e8bf456094dd91bb9e81706097a1b2d965822e1641a92b94. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMEZE1825413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598ab3a9150d8195e661e90c2ebe87667cabaa670e715fd78bba44ad49c0a235. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCABZ1436980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7d3a82b422336563ecd287c5f80ed068e02f2526d2b4f263b007ca911bb8a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABZ1436981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dd1d42304915f756dd0dc539fc9ad4ef730fe8ebf9dbbf2c93360c922da2f5. 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/TCABZ1436982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f61db670686b4cf01dec0f2ba9598fc96bb669bbda80c1c4152fcc05a3a03. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/MX1922200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109f84779eeef74fdfbe728dd3a33a5d56febcb9c6715d0d0e3beca9d6b4e765. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/MX1922200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd9aadf9e92d8e50afad0862b889374f9c8266b2f4bef2797f2a10d17eeca65. 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/QZW9L2297244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e11cc2765bc9d357ccbdf731c45a8458c728437ad30af4f1a5f2da2e0bd7dae. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MX1922200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2812132f29a774ce8879f8ea7df19cc6e695ba3b3cc3fede5ee7f77a26be77d8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNJV2325758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bdda86966df3a5bc989d60e26aae08df7d9045807dcf824714a6a92d56e78a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/MX1922300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8c912f8e554d1a919b25b74490c7a94dc6ffbedc8bb71fd5bc1fce9cf2ea87. 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/QZNJZ2326024.
Que Te Ruegue Quien Te Quiera / Una Pura y Dos Con Sal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a89201f4cb6b903f81449114d4a4bfec0cf4d5cddc94e6046b198877de1db2. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/MX1922400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6df8ccdde3218f02d2da624ff47ef2349d10ded08384bac8cd867a7f7b7011d. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MX1922400015.
Como Me Duele / Y Como Quieres Que Te Quiera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd091f16756f502e98286038ffb3faec45da4c3a74b11e19e4e1d262403de632. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MX1922400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d346336a726b2afeac62dc6e0ae58aed28def6ce204ed85a3cdea567698910. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MX1922400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bedc5864c35259563153fc3cbc061347bf8cd74ab239f9b540b28174b84793. 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/QZ9QQ2400459.