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 0xf08f54b03225cb643a912e61d90c8792dd7a60b74379743837a71cd0329322eb. 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/9c3f572e-b576-499b-a891-34af878e9ff3.json and https://artists.proofprofile.net/proofs/artist/9c3f572e-b576-499b-a891-34af878e9ff3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fiesta de Verano / El Garronero / Moviendo la Cabecita
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 0x1221fa04f476c22430f237424bbc047b9ac01a35c9ec3b4dc3789938a80b30a5. 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/QM4TW1823257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb32eb4c9ff80fa887649bf54bec07b042db92c7579f01ce35369e6205692e. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QM4TW1823258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5f36929eb4ad4842e8bd8d7be92c6e872b62980cb8bd08c6ebe451e0224f9a. 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/QM4TW1823259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca64652a9064ed7b734b7fef4c7f03d8be7083491dcf0bfd8f797ed2d690f2. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TW1823260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050670c9a415c2359993caa9723ef891ed12bd5d7dcac2ce4f1d137ff99729c1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM4TW1823265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5761a58d3067cf347107d5a835fb05f4d8f78149352e27eb37a7006132f00d6. 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/QM4TW1823267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b818024dd7e838dc083c5703197f18c422002be73c7cbe945435250df6847a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM6N21999349.
No Tiene Tribuna / Yo Me Hago el Bocho / La Yegua Blanca / Ojo Con el Baile - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ef8fa7298220a997c6b28ba233fd8882c4591105901bcb6a100c2eb0cda3e9. 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/QM6N21999376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e1bfa685190211bc8697400392507da30ea463436388bc8279c0992012488. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6N21999379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7a1400d2a1eb5fe18f3da749694090bdb95e7306fd82092f8ee177df56eea6. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM6N21999404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3daa998f4ab54b347ee958126c4df58ce0c02e12e7e502b52b0b853941c79. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QM6N21999407.
Amor de Millonario / Te Va a Gustar / Move la Co la Co - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3f86ca0a6b99220f7a18b650bdd48c1e30a83c6cd0d6164e8f26ea0a038ff7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QM6N21999434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43c3113d21e13aefab870c02d672303db76ff8fa2cedb5c60d55e3dc536da8d. 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/QM6N21999438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa138b747a3ec5e658cb5e808217c660cc782c0084ef8d183eb05591e50bc4460. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM6N21999440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d72c6df3d46eb9cca7fa0fd257ff6f0663225361a13c2e68c8b3c913ab3c16d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QM6N21999448.