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 0x533b52282fd8c805b282a20e022021f4bcf5d3b6cb33d0f0aae6e2b34c0dfe94. 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/0876d710-885d-4c8d-bc7f-1395441f1499.json and https://artists.proofprofile.net/proofs/artist/0876d710-885d-4c8d-bc7f-1395441f1499.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 0x6ac64f2038c1feb886411a1ca6b23bb6c4853a2b70187733b7955ddc5aaaaf27. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZK6L2202320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86acdade67d30ff2bf253d2dee817ac0d7c9235b0417387e911c3e8321332954. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZDA51977992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97710a7b6e5e057f274c595ce4a49c6a215d6f41debff874b3b6724fa4b6b858. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA51977996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d6fb2f1c49567f719bc81ccefd4f15fc2f278093d08baf406873bcfa2629b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDA51977999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e9bfdad985d94f5cde5e2b67805853075de26bdd898ec097c43c02d7ea82c4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZDA51976852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838b851b8b488eec62415404b4de136790ffae6284431c8912b88ad150ad3b18. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA71917060.
Beat 01 Sin Fines de Lucro (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb778e996a4b09c0d223eb2d8c4fbc9d17f15689a344210ebe4a66709fe77cebd. 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/QZHN72116248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0734c81c4eb4c46a5c130de4505856b19c647bd2429458950808ca81b388f85e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZK6Q2179589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63f3ef65ee4b23b0e81a7606d44ec5a2c65a0ebb99ce4557dcd2e4e9e2f3a9d. 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/QZMEN2181820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaed734e4e16117ed88946913f3d299287f9a1cb8159527de1425235bcdf0ad1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNWW2123720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb800e2fe52edc2029b5c946fcb162ee6d87ac2f8fdbeaa88fa2331e244779cd9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWZ2178907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3955d5fc9e6f774ec9a6fda824952ed2bfb9b666d0d04a7ba870596df63a10b. 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/QZES52297511.
entre el cielo y los desperdicios del fondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d74fe9ab685babb8cf967fef3d2872b7b055b73a8807fd1456f0dc5a4cedd8c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2245951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524adbf67a927a0b9f38c875ed282222eaa3ee9a584fdc9aa29513b63885fc25. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US3DF2245962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d68070b24afcc5615f09b35a23c019c7d623c97ac8befd5c4d8fb85dfe3cca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2245955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035b59393c6b8c4db123b1934dd4ca4fab4fcb89e7c8be8f936199bdff0965c3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR2X42393492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda3623898ede27a570954b9ddab0479beca8e764518770a56c4d71201a49be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA092399395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e962b4f131932e7bebf5212e85a2e78e30d413216a26fa5ff73e9d0201981bd. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/FR10S2465121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fad1d433c96c31bc23d1397439abf26df68c40a549499130739aee4aeb43ef. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHN52456008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478766ad9ab71b3a02f97cb81ffb25a653af14121b88035e0b917d3356e26583. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6M2442992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa476df28d8455a3bd2e52c24e9b4adc955b6eb23e41a17b17fb778a9b11c10f5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAZ2462509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d1b6c195ada8d89ead8a6ff7a9afbde43212e1aed78e5230089940742437c8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2462192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e5e7fa1148354326299e94d4c64c144d8280abd207e657cc8794239270264. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62544080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9452457eb051277b888842f7528469b154fb8d3a8c5961f28d8b01d4ba416034. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/QZES82577013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa5a70410e19f8399c9139b3c025dd06115810b8411693001c74f351409f11. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZK6L2559997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2ecab3eaa30511393f77fcb24c88926d207ee6757a8004abf0a59c7e4528bf. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZMEN2562161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf8dcf4333a431f8b205c79d03071d0d1f8db150c225ff500945e33deca88a6. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZNJW2544545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f96b734fb21707145c5e8a2be245284b64f9ba46367d9acbdd41e7c8fede73b. 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/QZNJZ2550368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e42788e085a98ef209c08972cdd0f71a79ede3b1f62a436fb0c35bb5876d22. 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/QM3DF2206219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805fc78103790c4bc90b2bc9ab557e37e13c0126178dd22d6b3dc9576c42275d. 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/QZHZ62262093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4993004bcd82d23365ff1c2c956665012437aa340f40f550b8e440f9cb3dd500. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US3DF2232294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4e7bd3bf792e7f09523507e002c46fdc86202d90801d44fe6fd327633a2c4f. 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/ZZOPM2223616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc606faef2be9a12909de2ae345502141ab29114ee0ad4d7cb4e4d7b08062df3. 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/QM3DF2166405.