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 0xc13b33671e489753ccf556627bb1e2543a4c76a27c282e02787178cfcae815a9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b3da72d-3584-48fe-bfba-4301bf08a253.json and https://artists.proofprofile.net/proofs/artist/5b3da72d-3584-48fe-bfba-4301bf08a253.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 0x32e226f1e660838ab7e06ce52bf877b9ec83e6d95246db5ea8256900ec7e214f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHZ41977500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b07e36b01627f92680d0a9eb51e11c12177247f088170dee86061bcc6a0f2f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:38Z), 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/QZNJY2032377.
Medley de Cumbia: Los Que Esperan / Que Se Te Note
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1116803799b790cf74da418fa509a781cf98a649ff78ddf2cb2ca2572cbbe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:57Z), 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/US7VG1772478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ccef1ce1ce299285774ac77faf702f5a77649c8128b2e5f564c7156cbd0bcb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1772483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341f0de90e6621b10a5b5bd85ae966bba985e52935444188efe2a4d56245476b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/US7VG1772485.
Juntos como hermanos / Que alegría / Vienen con alegría
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2b7ea2113a0e10caff30641a10e5801bbe5ae7466726ad9c4af7c28136a37e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QM4TX2509241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfc0d01507ab7ca127b7a2756148b4645b91ebcdce8f0b31569dbba6b1d3048. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6MZ2265632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8572fd18e25916b560f507615a897b66ec3008d00ee97154c0174e80debdd3aa. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM4TX2312948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27ce6327a4d13038eceba6c1365415c6148d98496d35cc497b770d3632659fb. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QM4TX2489448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b741111bea6caae79de6f736e6d6d1ac7515cf970d40413a5ed99b4dd74033. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:57Z), 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/QMFME2486202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f620e157d37754995d52879d0b20331e3372b6616a197ae61672a832fd4d2. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QM4TX2488551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a759ac593cdf80e971123a91034fc44d8b354e70224a52c57830179d6984a52. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM6MZ2569519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbce24a72cf25e06358d15113e8f850e7d835c11c8078dc5e7cd60be59c4caa9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TX2507850.
Jesús está vivo (Rock) - En vivo desde Buenos Aires
30 aniversario (En vivo desde Buenos Aires)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1681ac4cf653b374e5c4b5bbc543e1e7d1b02c0a2e8eb3e67e3539e0f72e35cf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2459534.
Hoy has cambiado mi lamento - En vivo desde Buenos Aires
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e9bfd28ee7fc52d8311bb678754a2d4dfdea79858ff9f1e80fccc06e8dfd25. 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/QMFMG2303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d16a60d5b0e3a2e3f7a37a297d2bfe237df0d27766bfd6b57e75654b8a8f46. 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/QM6MZ2206251.
Hoy has cambiado mi lamento - En Vivo en Buenos Aires
Hoy has cambiado mi lamento (En vivo desde Buenos Aires)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e9bfd28ee7fc52d8311bb678754a2d4dfdea79858ff9f1e80fccc06e8dfd25. 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/QMFMG2303780.