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 0x0fe222fb73e81a55940681a0185831400d3ff4cfb969d6f6977a00df6173d311. 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/2c3d19db-a087-4a73-8174-60a16064a868.json and https://artists.proofprofile.net/proofs/artist/2c3d19db-a087-4a73-8174-60a16064a868.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 0x4b68cc2e1465d1eb20bde5c9368768fe3b993e115971a10cc681845cd3ca4f9f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES6171919289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f2727589ed59b74e8fb78bc801098eb26e3f04a55703f2cb86c9329b4cbd8a. 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/ES6171919292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fed6c23626484444ce1d0fed1e394346143fc21b78b3e8e3dc31f97276ff1b. 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/ES6171919314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133887d7c8e25bf87565791027936d4b1788896e855462b92523fb1f9d535934. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES6171919321.
Fuertes (Colaboraciones) [Recopilatorio]
Guerrera del Amor (feat. Bernardo Vázquez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8e7df7185a2b2bc11d3426f0c6d554174723dbcba41cfa7cd50c0140b6269. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES6172121154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07dc20c3bc57552f892deae36e2aed45a7fc45b905a1ee625af0acfbc2612d0. 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/ES64E2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d96c9e1056547e10385d082529abfc24dd51da0804ecdc6b2014cf62021e0dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2268486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2345811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3107f35a9ece89863d726068181ee1be7458afaea93842a18c1ee0f57c413c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGLM2423033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cefbab7d96b598c954f939f87166502dfb6833c21a0e5f13f25e65e5c2e94f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJV2414493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e6d5afae0df2db1d85fceca2a071b573bb5327a86cc48a68ebb09858bb0f00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2525684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1206da7117e0ab214dc4c57455f163b6f0e195a583df911a9b872ae1ddc30a20. 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/US7VG2578491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4457c754f98c6e3de298f3dffe08dfd3ec919240887d9ec556bbede8efa8fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2202336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612454adad565216a10dea8622b9bccada7194ce0531e9b8a29ac817cf4f500e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES6172121006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee8332947cbb1383a7f303d61bca7e7da6b3d6805e004c88d31b956ab1a6c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2301233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81231ecdd2c1e7107920410147bcb8ba0c79fccb7f0eb35b8c1b6d2b42260851. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6102226102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1216d78944247201a44ac6f0eb9f40080a40b5b596fcf103eef0079b9c9775b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ52297881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc294ea8c1612b6bbc7b754c407d77f9430b1dcaba83018e6ae12b9b5e74479. 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/QZ5AB2366366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88c06af439c88dc639dc33d48f697448b717bde83f7de7bb438e6c83dbc407a. 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/ES6172121136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00573f3d162622a9f0284d8070add01a43ad1a61a9e4ba410072ee8b4ceb91ca. 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/ES6172121134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03b461804f9dc6a241337ddcdbad9c5f5b6ff967203eee5460385449a7c19d6. 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/QZW9L2282612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1216d78944247201a44ac6f0eb9f40080a40b5b596fcf103eef0079b9c9775b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ52297881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07dc20c3bc57552f892deae36e2aed45a7fc45b905a1ee625af0acfbc2612d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d19c31539eb4e33543e8aa22c8c652221fdf6aeb62829043fa006e4ac3502e6. 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/QZMZ92299438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0. 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/US7VG2345811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d27588edaf0380701574197222780329e8a3b280a4bb7fcd900937353e501bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES6172121151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b3f35bbb7fe1b1cc6ce7f069f924b9488020bd0969ffdbf9df83575a66fe3b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205d9a20c30ef538172b7eb0ffe7b1c08168ed0c8094f38b105b12fb9c62e42. 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/QZ5AB2366368.