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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b2ff2404162acaf4a30cd13c9b3e8e79dc3b631bf769f130bedba4091f89fc. 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/72dc9587-b0c1-43ba-8856-0e45b4f7222f.json and https://artists.proofprofile.net/proofs/artist/72dc9587-b0c1-43ba-8856-0e45b4f7222f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebae27835e84581aca6f6b1c0fbd6db03fc97e694aa868485424f86b45c27f17. 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/USSD12100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5d6fa510c539e22154dd3c21b5ba93393f7840243c54db0f1f3813fb10b53. 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/USSD12000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653ee3ac6cb5ca2571c74989a75fa94a56703876e8a68e3c5b1ec85fbbdc9a57. 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/USCG60811032.
La Tierra del Olvido (feat. Fanny Lu, Fonseca, Maluma, Andrea Echeverri, Cholo Valderrama, Coral Group & Herencia de Timbiquí) - 2015
Más + Corazón Profundo Tour: En Vivo Desde la Bahía de Santa Marta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b129e43b56678907ff93a41ca48094bcd917d16ac387fdb56774aae0dc0268. 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/USSD11500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ef19eeb6e37e82d1267d99d6a9bc4ce427a9c13404c8210450b30adc6cefd9. 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/QZ5AB1625533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0b08d350e69d779f0f5d97cd3dc716815d0349eb34d1bb70d19b1d93d65343. 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/USUM71615645.
Versos de Neruda (feat. Xantos, Fonseca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25bd3ba4defa4baf44cf6f4fea9edd0a14ce0d1627fa74fc3fba5bcd9263f6a. 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/MXF151800124.
Una en un Millón (feat. Fonseca & Kevin Roldan) - Remix
Una en un Millón (Remix) [feat. Fonseca & Kevin Roldan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba1cbcf1d044b9e3aee0b35e30e270c5081f6198fa6933aab63538f37736f9a. 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/USUYG1107036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8da0d3b9139fc1b4d97f7250e8f98f81b3a0b8062ad51ebc34890a189d1a389. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXUM72201059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb176e82c5ef1b409e7d38632cd75f32b4d1ba195834585fa257c8470bf4ad948. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/COH010500153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ba2006dc2f80bccad7336a62903e28fefa8c539a17876c388e50bc1270764d. 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/TCABD1281979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6dc570e42fc04d48ecda3853bbfaf7e591866d72d038819407847274b7303c. 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/QM7F81400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b5b486be07fcc15850fe24bbbe52f94cdbcc2a1cd8dc1664bb4c4e2fdd1cf2. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITQ181700087.
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