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 0xc92a912ab66b96c56eefff42d70bacfe7f60a7c45baa1c701fc61c8f24891332. 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/6c2c61f7-acb5-4e41-9afe-f2af58f8392d.json and https://artists.proofprofile.net/proofs/artist/6c2c61f7-acb5-4e41-9afe-f2af58f8392d.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 0x3527c48bf5df79cb9ee331f978579cc1398c48b8d73b40173f131607ef6b41d2. 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/QZES62131032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8b9db2a7ec6155d525c8b910a0b611157b75b60571303682796754cea10cbf. 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/BK4DA2429207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c60f97ec4ea81cec7d5076926020cdaa9e99f163637f90a739bea22e905cd5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2415180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0526a6db6c95de511d6bdea4439d787ea0b4ca530fb1a578baceff519bf6bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2401589.
En una anilla de tu sujetador (feat. Agazzi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa27ccd390687e5b2619d9bd693a8908fd7f645674c081a0590ef821220fa7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2307098.
Voy a salir a buscarte (Beber, salir, currar, gastar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54cdcbfe9a20235dbad1e8a34f4f4822ceaee7e930157a043ae85f1d52bb6c3. 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/BK4DA2215057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3b2d53717a4b3b7962cc4b63ae479f701564eb09b67e8371b53c0ffc46d7ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2202498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ef539c6fe81458d593885979d0011cb65b7ea3de1deb77a4ac06be17080f69. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2232864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3ccf3fa2f94b7fd51e41fb1eb610f44cbb58bd0399166e30be198aa5fa0310. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2225322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3a79f7f034e18e9cfe2527151db6f73dc2c228fb172c9836aebd6fa77b0e72. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA011533110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f027949524958372d9d05436caac3a44105eb43205cb69b84047ecc831458b. 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/QZRP52103363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6e4c43dcb6e9b19fefc19f719633f6256d11fa431ded26b05eb5205e5dada3. 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/QZHNB2167153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97226f2a01a6b3194c677d5b862ee553caa18ccfac8d3f1a0f05231511b08816. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6H2000863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1414e7827c518823f666df11ea348a40cbcf85556ca1088e18890acf17165263. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2504135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f68cdca17ff8cb0282a76471e8f97b0f305786dd424b3ad82bf0a3258686ecb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2501164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e3df140b399ffb077486a6c190a179157322a3a4e49fb90ce5ae0899415f4e. 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/BK4DA2463010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad9f76c6b0b473194d5a2418b87189c5258ce057e4b01f748a0e2031048b6c. 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/QMFME2249765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c26685c626baee81bc94a00019dab6734254d7c6ee5cf91d892bc884b03d9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2300914.