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 0xc3649f75fbe3039c2d13ec5390b7747fad7dea3bcc4ac81aa2de8b851bcceeb4. 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/e3c79db0-0a22-4d47-b6d8-e6b047e552c4.json and https://artists.proofprofile.net/proofs/artist/e3c79db0-0a22-4d47-b6d8-e6b047e552c4.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 0x4d11f48543fc403ed3eb29583907bb625cba8977cac0df4ab95d14abf1e39b58. 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/USPWN1300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb6ab101383eeaefd6add1fb2ce1e7f0926bcf5065fee3415b262d8c7355b25. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:10Z), 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/USPWN1300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270cc56e8965735052df4a94aed2d71b4613ad60d0c660c4881d15ab8e4dec8d. 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/QMFME1458386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec484fd09d36b441e380b8962c26e9c2b5a1bc523a7e6dbe9f1f638d85e855a9. 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/QMFME1458390.
Los Recuerdos Están Hechos de Esto Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa885c776b53a64e34bdeee7e15936f9248dd54f7019c6e3226462e1382b2fc. 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/QM6DC1524967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a39864d58773419e3dd8e80cf97ce3156d4df25eaf512fc473d8c8afc1e0e. 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/QZXLZ2341303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b5b63cb8c7ac5df6d1f3bc59bc72bfb0d937bc84469104829c8b1f9523288. 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/MXF367724289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149bd8d04bb731d6911f3d1078152ad22064c3e7788689cfd49c8ab795a36560. 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/MXF367724293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56ec7b2640225be575acb8de49a2cc46dea1bfff00dbbf3c56c43244b306537. 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/MXF367724295.
25 Super Coleccionables (Versiones Originales)
Primeras Grabaciones: First Recordings 1940-1950
Los Montañeses del Alamo (Serie Imperial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ed697b576c7b295810645a27155a832db6bcf085333135036c3f5d0134cfd6. 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/QMBZ91719083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b471cb088a11df3eb3fcbbb1ad1abedf31b1823dac0a0fb61e62e9e4d8e1224. 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/QMBZ91719090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa089c1255ab2614d23898e2914957995a1ef242c21ed6a1a167825c34331649e. 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/QMBZ91719092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e2335d736b879db51dd8a95d0fec20d0312f43edec9b0179353b5b214bd54a. 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/MXF067600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002d8d974b2390e331db2d11536528ee8aaa8a25bd07529ef6876d099cf44199. 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/MXF067600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ed343b94235bba72745aad124ca949d2611a7741cc0c6d236f64b993b88a1. 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/MXF067600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d9216903d94ab5565499cda24ee64357e9fca8f2a76182d6aacad761d2bbd. 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/MXF067600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e63a8ad3a0cc2b0bce5fa98eb0423a6718cd740916404edf0929dcb3235e562. 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/MXUM71803012.
Norteñisimo! 15 Exitos Regionales Norteños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64c0042a22479ff3023c4856900edcff30d20016bae4f575d0e3dd2d5cd2ee4. 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/USRMK1000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6222f583356b601b39796974e5eba3d0d6a8771509b6d9c8422465510410c8f2. 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/USRMK1000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca01564c6223269880cea7c17b532c6b77cc0b0ff471489429e0f2de17b75cfe. 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/USRMK1000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec74961de4819b50d73c67341cbfc3ffbb1b786d83ab77c50258e930b3f99d6d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USRMK1000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e87b6c96d34f1f5175948477b570d23d8068bd44e69c964c3d3220cd57ee15. 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/USRMK1000311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df5a5f59fa0b3307edbe5c3ed6d5002372325c40936ae7eb745ddcac60eb532. 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/USRMK1000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39d8180db6eb5f0a825cccfa0895a721366c7b3ba7129dd4fd9964f46e4cc30. 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/USRMK1000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b3f188cf6d79772a2db421420581336a173865a9a77a7a8da61c536adebe40. 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/USRMK1000315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c90a8db8a61da9b54e1215fbd4719891277066477b84349de04d15747525a3c. 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/QM6MZ1705519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08025b0273b41bb63904eb712e5204ffbf34204f4092ec339f03028bc0946e8a. 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/QM6MZ1705525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf16e8ac9d88cb86cddc184fc0420ee3e54a85c1414a8fcbf7e181ea8a79b32. 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/QM6MZ1705530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a46dd7233f56034baf9c2b869e9e6e2459b0c87a1249c81b1ed49e45398adc. 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/QM6MZ1843142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc683116cdd16ebe47a075783fa8d7a1212c298ffa10c25320d4eaa0a0e034cc. 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/QM6MZ1843150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3589d66ab65e18e310f281cb803f173b5342eb66537149c33ccd092653de2806. 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/MXF550800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a8d01cbd0ba110a440cc5fadd6f0fa55abf49c69304e9e2bd203d51bbc8f3. 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/MXF550800357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cdc507434a4863004d3e318d74f84ae8e2dbd99d7a85397dba166249f179ab. 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/MXF550800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9db477764ef2ef93a8d59c0b92fb21193ea214f56aed92214c93991109c596f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:18:57Z), 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/USPWN0910323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437f700bf7ef32deb27b7b313cd593ac1d6e9fb649e6a17ef380a2ce66966476. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZXLZ2517197.