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 0xfbb4a7620f18f563dfa157bf717f88fb1d2e78848064b113e16bcf1b70c72510. 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/a368c433-77ef-46ba-a168-87fa01575b49.json and https://artists.proofprofile.net/proofs/artist/a368c433-77ef-46ba-a168-87fa01575b49.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 0x436127d75c97113c755d06fbb965fdaccdbc8aa855d772daaab46b0060f706c5. 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/UYM121301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9737079aa73aa2c582fc219fe108677611a0e8d5b892c8344f78702f83b7099. 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/UYM121301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ffd86aa8bbce927b66a70bdd42b608d06828673d47a8c4c3be051e1e065d74. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UYM121301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867ce96dbac30a821e79f5c13aaaaf3a925aef321d672b5a051063fd3096eecc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UYM121301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31aa92c4a67793a2671820ded2ac6d1c69e404ddb0eb27f972fda62d2bc2cca. 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/UYM121301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea28712cbedef1e16aa57d4115c93ac0ef638373248c80f11abd78220445dd43. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYM121301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964b69c7b902225aca9fd919c8518c8ea0f4aea34427ec2849beba4ee2b67a2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UYM121501077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb78ea1266478703824b87a8c456bd500fd1a8d9d09f6748f238f9c13d225e1e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYM121501082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed73ef17142b02b67acf3df3b6a05555e3f2b9a4737a0871f5525a17f3bbf50. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UYM121501083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c8faab4bcc12fc0ce96dafd3a1cf3ca1e4e6f982215ac942f0e353b697a04b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UYM121501084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf2cc57b428df4aaf7fd9cd3eeac1769817a84e64171b3107cb2685a659b49b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:59Z), 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/UYM121501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b335a5db567e29a8534429e24f5ddd871440dfa5f99a697e9b435c46ce3501. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UYM121400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc03a8718e78f95d9750e6c88c4c88aefd28763ec0bc0daad237f026e6147321. 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/UYM121400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78190a892054e91096fc0e5478c590a3e9a05dfbec63f5b40bbe5e4016316c. 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/UYM121400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1464c374312bd9690ba4fbd968dbd50db0a372a5055f56017b967a8a7d5fb1. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/UYM121400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57d1c176a30695f8791aba6f9b2ce51a8271d841f2fef7e29a238a6cb59536c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM121601408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3092fb8284f9d19676efbcbab0edef9b32d35554b81d3c42f455c18e335f35. 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/UYM121902120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72134da59f935e203363950663b467d1613e1ad9a29ddbc19ed71047da1057a3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UYM121902128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233fcfbccd9117ff3ba2ebd1c2944e849837e9634f6cbf0a5ac082c9c6e2eaef. 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/UYM122003262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1718df5d80e79c69d66786b665c959288ec75603b8bb63e24e85c2658a4d4a6d. 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/UYM122104630.
No Me Mires Así (Montevideo Music Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d47888e3455b721ce5f3a9769495e3f9b905d539663f204cee87d0fe17e71. 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/UYM122200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e093fd65713baa5e5323214febea1350e54d29d9cfdbdd503e64f795c7d0852. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYM122200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed7a65e32f9b24a7ff520147db888aa87e77e1ad22fc856c1fac97e60967a03. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UYM122200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d47888e3455b721ce5f3a9769495e3f9b905d539663f204cee87d0fe17e71. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYM122200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeee6b058320ac8de013219099c2d73494288309e70e95db36f897e120fda821. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:47Z), 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/UYM123002300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ddc2ebc9cbc630eb181d895caf57d330c3229c77c5eea7e19ac0ec394b1a11. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:22:26Z), 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/UYM122401320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73381d9e13d2b2c292f1cb2399fa6fae4ef993905da404493656a2b6d8e19cfe. 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/UYM122501424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83909f40022e3612cf1cc7c158da88fc78db7a7b4f22a965b00a25b8ab44538f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/UYM122501552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd670b4a3f31592c05a96dfa35e2752054744878b24cc1c430e4023b78e74d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UYM122501557.
A Mi Gente / Se Verá Que Pasará / La Dentradora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5a32fa2d71176a47fe99f6e789ea2437d82f17e6c6e439eb45029872175dc3. 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/UYM123001507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4453c87591e46fd0e20fd1dbf229b330d85fd5d6022714772a61ac55524f576. 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/UYM121902958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30f1544d835907b313d1d7404300a1e5bd22b35a92bd54f386755c56ecd7435. 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/UYM121401182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27301afbaf44d8094975936ef65a93ced03e056b89f81f051067c7740d303fc. 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/UYM121501818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c028aac9a641d0fe1bbb1990fbf546ce330a490470279741b462058b5434939. 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/UYM121300533.