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 0x56d069449043b559b7c5191799e3f5669ffbdd15b910d96255662a015b0ed428. 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/3c5c9dd2-41d6-4906-9bd4-a725ab492fb7.json and https://artists.proofprofile.net/proofs/artist/3c5c9dd2-41d6-4906-9bd4-a725ab492fb7.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
La Olla Se Destapó (Canciones Del América De Cali)
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 0x27af2619f0a4d9739d170e9cf1029f785a3cd50cf6a85b16a673e18e121b8d29. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1860001 — a six-check JSON result.
Ha Llegado El Momento (Canciones Del América De Cali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aea33c579b231c714f20c30b7aa61c4f491f12de028fd8f85e2aad12e698951. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1860005 — a six-check JSON result.
Vamos, Diablos Rojos (Canciones Del América De Cali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a74ccac84f31dd69a650af986821765792545709e08062acae7f1c3a354322. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1860006 — a six-check JSON result.
La Hinchada de Los Cantos - Canciones del América de Cali
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48929d83dc39ee6ee0b2fce1c91819be4bce9c7020dc264e2e390f52cdf3577e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2028594 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c13142063e0869dc9e818cbc9ca1f067108f234640b9449561e16b66221538. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2028596 — a six-check JSON result.
A La Mecha Yo La Sigo a Todos Lados (Barón Rojo Sur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393435c692412d93b85936664fba4ea7b1c0a79a43bae26d8f6598995b8d23d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2028601 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506ada1020c14fae8dd4d46b69cf975e1e421167c27300dd3281326dddb8692d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2028607 — a six-check JSON result.
América Sos Lo Más Grande (Canciones del América de Cali)
Este Amor Es Más Fuerte - La Mechita Es Más Que Una Pasión (Cantos La Mechita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7e7c3bae4302158eba1252c2fd9f4b0c09c5fe4f329735eedb450db4e6b454. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e1b34f295f3a2ad7af2ffe88d7edc4e0ba78df0ae169701add91930ba3b63b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312831 — a six-check JSON result.
Todas Las Canchas El Disturbio Te Acompaña (Disturbio Rojo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe545a0a3b65a2cc99f37105a3d8b6680eac6628d3b957caea282892de3f612ab. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312833 — a six-check JSON result.
Huevo Y Corazón - Quiero Venir A Verte - Hoy Tenemos Que Ganar (América De Cali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6b0c25a06687d9b944edc57cbd95a8fbb901e74d3f3a13a50f4ded68eefcdb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312835 — a six-check JSON result.
Los Minutos De Aguante En La Cancha (La Pasión De Un Pueblo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6289ef193fa95f3308fff565eecf53b1fa983a4d740eaf6c6ad6fef6646427e6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312837 — a six-check JSON result.
Hoy Hay Que Ganar - Dale Dale Ro (La Banda Del Diablo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc1d53b7b3b7b75f7c7ddbdfdef6b3952584dd34ed9a0ab21eb73232ee2ab20. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312838 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171c4637e40461ab7277365c6d9d9f3203c61f5caf5ea6e7cad688d781864bc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARIXB2312839 — a six-check JSON result.