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 0xeb82245d3b95e1cdb56fae31bbc1b0d650dca949157dcc7b75773395151c2f88. 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/919b2c61-e6ea-42ca-b89b-a3e143c9ebf8.json and https://artists.proofprofile.net/proofs/artist/919b2c61-e6ea-42ca-b89b-a3e143c9ebf8.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 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 0xe4b1f58cb4d9a2826761682a78b28801746b001f5869de73a182f20f63579bae. 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/QZNJX2366183.
SIN COJONES (feat. Papi Trujillo & 13am)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9481c6dd5c25a20e517c33f480464359c3ecd2333cc9fb0f0466161bb7e819cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZWFK2314098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00146ec6c77770d722a2093c5d72103155b5d2424b3a79391e2fc072e790d82. 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/SE6XY2345401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82499e76678f597962c721781b7c6f7b544d3f6b232d608b6c8aa398ee717f00. 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/USCGH2382981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da523263a2134c346db7ad1bcadd174a70f5f716d6c015cf7a96143c0811676. 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/QZGLS2588008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc404e9f1e37d3cfca3bc3f66599305b070e5eadf51119a5a6f5f064b100a1b3. 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/QZFZ62584168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759022d35caf5d05731f20f9ebd48e86ebf934ad4341e9cf98cc0edb8fd2dbe6. 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/QZWDW2494956.
La Vida Y Sus Vueltas, La Calle Y Sus Problemas, El Amor Y Sus Visajes jaja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb834c9d3df9796e9cf3eaa2fa95f4dd1fd8715c625bb6e3e76278022d731e5. 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/QZDA62432555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3d6021c6529fcadcad0ce177625cf3fdd787210940208e47ca3c844013f5a5. 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/QZWFH2391001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5708d12b9e5ef0e6241f751781c3c1526b96cf50853d0c0b6c7d5a8df8c1ea. 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/SE6XW2393768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1d8627a1bcd4c67535b4c8cb47f1be9b5f3892c01b459ba8006c6bda7f1c4c. 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/QZMZ92336716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2759776312560bc70206e5cf6504d5909973f45a88836cddcb1c06587ff954b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:41Z), 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/QZES52372891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c675fc967313bdd129ffa173502e130e7690317368d770d35fa83bc0ccc80a. 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/QMDA72298147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cb0ef190a8d406814a1b980590a3758f212e0b256e4143cb842aeafc439ec0. 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/QZTPX2233664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e666e5251147a9bb2b9f95129578c61a601b939079b386adb3117975791401. 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/ESA092209056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f95a07e35278f8dcf25da1ecc383275a2c1b52feac77eb833656c818f93135a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESA092209532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d0a63c319b34564797d4e1662c43a016654b2d14ae28755c7460f7d21ab01. 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/ESA092207111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854f4bef80659755b1bb2cb23f6093039fa74fccc88e5666b5b5231c532d2166. 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/ESA092204010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eaf19cd77c32ec1d606ca12abc18dbd0f208849afc46d72b2f9e6ae62fabda. 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/ESA012235853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c2b3302a1c74c9d233fc803bb898b82416563af16445fb154545fa120c0023. 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/QZFZ62263085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ad3bab40e0261c4ace406ce96439c7a42432ab97532f36585f2be8603e399d. 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/SE5BU2149349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c675fc967313bdd129ffa173502e130e7690317368d770d35fa83bc0ccc80a. 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/QMDA72298147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f19bc12150b26042d675f708471b7320a6ff8c7f2c7b749d64833927e0fd9b. 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/QZNWT2421018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780998df7fa8ad8a4b8c904565caeada9c2a377acda274970ff7c95b44cbcf07. 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/QZHZ42016460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984163fab7b2ab2b0780d3c88e80a09d5858ff1a86846f32e75c4cd0cefa8771. 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/QZGLM2535522.