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 0xfd5dd386e930b8d9d5b8a6203bd219d9d79176b398dc213511990f0018b9c793. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ce70fdc-2e97-4002-a648-c7546964948d.json and https://artists.proofprofile.net/proofs/artist/7ce70fdc-2e97-4002-a648-c7546964948d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
He Estado en Varios Lugares a la Vez: 5 Canciones de Lobo Suelto Cordero Atado
He Estado en Varios Lugares a la Vez 5 Canciones de Lobo Suelto Cordero Atado
La San Llamarada (8 Canciones de Linares Cardozo)
Pluma (Un Disco de Reversiones de la San Llamarada)
Ausencia de Rio Con Luna - El Remolon Remix
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 0x02274ed7a020ce0839fcc4a75a338256baccc6d59d5c7d79e85c3509070add25. 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/FR59R1889482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a6017502f9b43acccc89ad367be179e67d8b7128f5b81e7eabb2df8db0c1a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/US83Z2304814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad20422692fbe11fa60a2fc8607f19fc4e99f61883191772a1c160f725925a. 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/FR59R1889483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6e115e1b102ac0ecde9cfec19471c3abb9f13cd97c7d965a481193155dce6d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R1889484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac758e5fb8d9e6277c92506d7fbc7a6247157c6eb80e011744e29f06169cfa40. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FR59R1889486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfa16d40ae65a5913328101ac306da1befdb7cd15219bca7d489bfccc11738b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR59R1889488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58554a52354db715d08fff624f162e97c02308fa3e2205674761218671b80c66. 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/US83Z2304815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095764af4885cf58c55793d819fb59c9b9d0dfc9734a29a3952d8532a339f01c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARBEF2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aa3227e11907971d8f8dc1b8b132e1fcd40c20dcd7227ebd913b1fc71ee39f. 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/ARBEF2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f75f88f2d425224a7a5be94617760bb57ac1b7e54d638330055ef36c6d0036. 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/ARBEF2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884b729d3673c307bce55bcb127790b505397fcdd008b1b7885344434571e054. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ARBEF2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d012f3cd58bd382e654804245c677cccaccb22647615c67703b4c8e32e15b30. 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/ARBEF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5421f409acac733612ca6b0c4fa2d6a3c79370e320b23c8a663d0f3b99c97602. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/US83Z2321335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54b6c2b093f5c4b2751946bb8227b36f2938b4cff9a7f2806906c5312ccb795. 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/ARBEF2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69f9e8717ab641cf3811226ee5612067533c952658282dd1dcc61c2d640e660. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ARBEF2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573773945ce6f4c57f88991a7b0ce2cd20e8a5a2de8d56d80b6f2911e716781e. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ARBEF2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98767133d20b1467411b6b016df10f5d69322ca1030c0451ee11bcdb118f7834. 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/ARBEF2300006.
Civilización y Barbarie (Pol Nada Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824b5ad327977b09508d50d5279c5dd7dcaa34165b1c6da2f8c73989bad33e8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBSMU7890961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9add478d1abe9377806bc16ada7d122eab34d28c08aaabca09344c6a12c74252. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USHM91930535.
Fuera del Tiempo (Postales de una Pausa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69434b42b3baae202219de55f6a889977278eb5d6c15e70730ec01c68def6499. 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/FRX202082542.