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 0x334167578504639375ed389fbd90247cf38e5b83b222e05ff0838a31983095b4. 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/097564fb-359d-4854-acba-8f9ff00abe5d.json and https://artists.proofprofile.net/proofs/artist/097564fb-359d-4854-acba-8f9ff00abe5d.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 0x123d0249c5a5a6b41086b3d33eef491cf486418d8dfac782695c8e334474c2b0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USZUP1011468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67745b0d764b7853677c445526c66c44291dc3a93a333d29f61552a9db77b59. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11e54156ed1acd2f9b334ee9d07abd56eee3eb45ff827c35ce085c293a591ef. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1011476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd780e05bbb9fa28d05bff3f6aad5cff58f535f422bfd03e91367e7ca1aeab01f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USZUP1011431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1c8e01df0c1706287ae20ad37f61dcf8a12881fc9f25a3ec50114cc48ad1f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USZUP1011433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7195b6f6a458922c2315f7a3ce7a950594761f8c0f56dbc00f6ec86c9d511886. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:33:44Z), 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/USZUP1011435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47619e033d8daa688b7ef2b59b0f6127592d0a55f88d640c20b7d163dedb804c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:33Z), 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/USZUP1011439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a156ae5a57fcbec7c87de309e93aec80784edd5695d6b741afc2f0dcc0f4c8e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:17Z), 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/USZUP1011440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c165ce752c21051a75019d24ab213e56929854d59fcea04d473ac3c665760e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USZUP1011441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dcc82af9d7c4fe4d69892d0b4b5e15d226ad249b289b3fdd9c9e4709d3ecf8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USZUP0810018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed1992971eba49b83242b38ecd4579c56d4d1b186a093dedd3ec64ea1dbf56. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:00Z), 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/USZUP0810019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124a3b2cfdee2beb8df28ee0eaa3fc515849c96897fd3c011f5c077c8dc2c945. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0810024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03215eb31f0f5b6315b72e7fdd25d4ca4d731d79609f2d641a63ab40c95b87d0. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USZUP0910455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535332640ddba1bc087cc69dbcb2207344d718670a3316f53a35cf5e5511f798. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:43:34Z), 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/USZUP0910457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643f68fbf7b8e13521efcdb9ff1c7473294d6bdea12f1acde6c19d837346186. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/USZUP0910458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d6cc64a20a788fe3fad81b046836f22e2fd283fe0037c09b333dad70b7b175. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USZUP0910460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b31777e8941771080474b5f228d09854b35a3865905772253d329771819888. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USZUP0910463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eef9700733a1346b468d273ceccfe9aa4a8b52b6b86ac8d77e1a44caa7c5f7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP0910708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c4a7c3efdfc897f560a84e5964bd75bdb3a18e0862166c1226a8c5a7c8c459. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:42Z), 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/USZUP0910715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b97b9d97548b3878dd373859745c1f100e3d3800ea371106a0b3d4f59194c21. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USZUP0910716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44756f8f630b5476c9160281e56b42d83afed368786fcc6bd84635d09ff44509. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USZUP0910719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb86658c3cd7f971f5b389dd55a08ef35c26e72222cc2d6016a6a0f6127394b1. 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/USZUP1010029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e28505d9bde0e7b7105b68ecf702191411dedbef8d7197b069f04e91b27545. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZUP1010030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda022e7a816a6ccfbe586ee34eb355d8dfddcb5430503fc3e34a24218e78ce5a. 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/QM6MZ1504079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1333a6ce68de44cc58332238c6605c287bf4e66bcf2efabdcb2f114ba4c289e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6MZ1504084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac7b7044492c3fa5bed5353e1085c78aedbaad3563b7a22807e2798b17f9349. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/USZUP1200494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b6183ff08c843441fd75a395007ac7decc196322936704ee9265389683b61f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USZUP1200495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e52cc838643e1473f60a1eccf3104b2ff42fd4199fdd8fee1a797c10a40e25. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USZUP1200496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e86dbe3d5a0e8afe66b8fa3f5413f9583af46ea0fbfe3ac4a9e826085f713. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USZUP1200677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150084f3428d13a79fabe78ac7931de1cdd3c6f4194701d45623968ea84735bb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:26Z), 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/USZUP1200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9a755a5fae3e46121da6b6d09fb6f8f8c5e3efd20c391af5d192c181302263. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USZUP1200681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a1e873bdc37e3f44cb6d8241b9799484102109664b1331cb80d165801475b0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USZUP1200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d5340f2fcb4442d679209ab69ba00b83883116de5d910c920dc4a4df9761c9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USZUP1200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd1028964d7180e9d5602c1c6d098bd6372c124cfb1ccb820f4db8f5891973. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USZUP1200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6318ea7c9d032561e766e9b90f960016e6b2eec57254cbfb7b488b313c9e9af. 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/QM7281929556.
Popurrí Duetos: El Columpio / Aquel Amor / Mi Ranchito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fcf8bd11acadfcb94c8682d86ef4b8e6c336dc497c2b88cbc3338b98fc64ae. 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/QM6P41924154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d9713c016660b4af9599b57d16a103fdff2474a419b099edef889b59d54c87. 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/QM4TX2046222.