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 0x035f0b2056e670d6b5b490bd79a5703e1f64443adc6a62e7adb824306f2d1065. 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/64ac7981-88df-4d1d-adcc-502407542c9e.json and https://artists.proofprofile.net/proofs/artist/64ac7981-88df-4d1d-adcc-502407542c9e.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 0x2cf17869299aee66768ac49c02ec06b976af487855d8d3a039a08498926f7cbe. 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/USNPD1219765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20f27320b11b9abc7ac0598dff9f83427bc2db8473d7d68f3ef8ab1cb65d43c. 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/USNPD1219763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbf338c92220a344d149c0bcb6f6bd63f8bd5522c91f72e8940307becf1e409. 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/HUA320500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fdabbb38ccd349a9178c509b037dc18be515a13d47400e7c46206a24c7dc11. 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/HUA320700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f058c43b56d82f43dd989019e44e99d8a7af4c3da0227e7a1b342eb4e3baeb. 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/HUA320700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13accc53c56128af623dddb0c13d21fe9e51cb2bed22dfc32125013b9a58c446. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HUA320700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4123ff287558e205a2c4cf7d74037dee20a60ae738f56be25ba03fd329a5a1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/HUA320700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e028e96cf1d55d18ea8edaaff27ee11cefade4ffcf84aef7e8bcce35f2998. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HUA320700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd5a5c38ed9bae7e702fcaf0e7f23dba1299ba55d4c0d75307854868a7f5233. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/HUA320700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b153c7641b490d62b36b8bf0d8f75b87da6dee88c6a8eca3ef83b35e07ffc70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HUA320700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80bd1d5b9ef184a87b5ed587a2a4517deaf285b5a4992b74e7387ad7d0e576c. 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/HUA320700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8279dab8ea91531a08921e981ca6da8d28e355c14aff104b7657268d5b81763. 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/HUA320700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cb8df31ee64bca6b93443eb419dbdbeb54024b9fa20960a3e1a9bdbe98066c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA320700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603e9c623250e71200dc6b1a6a07ea5fb56127db06f8ce3829e67bf96b675a48. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HUA320700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ebe847b996a5fcfc72a84cd8ba94ff292265e4aafa18ffb102821355e6036f. 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/HUA320700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f83da61d1b2d0e6beca0218174804f2de32b4ddf48ed0877151e2e7af82fc1. 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/HUA320700027.
Dalban küldöm - Barna kislány dzsukel Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b598ca68b10398cdcf365245993f68eb5e9dda3b537fd4cace25a1dc4b04e2d. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/HUA320700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc96aef61f03617a536d9bfd9ea9875f925ddc74f263dbc7a3b0e35bbcad1d. 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/HUA320700496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6126fa447bbda86408aab01545977e0de7b0dee5b4dfb06cb82ba7c96f4cbbe0. 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/HUA791000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64186b3dc955befa2745dd9a8b15d7109e851377e0ed1cbc5e994147a9c46670. 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/HUA611502643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d528780d77c39dcbc9c82cad19b017059845d0fc5dec679cf20b3252cc9b94. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA072525904.
A szeretet él (feat. Gáspár Laci) - Christmas Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e98b46676ebf449851b13552ddfbc3032a9f4a45c26424fda660f1fef559b5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/HUMAG2013304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe856dea1690765de43374a2e5ec4fe946a0fc9ff0fc7998123df58e22f5740d5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/HUA791100366.
Hurrikán (feat. Majka) - DISCO'S Hit Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480a9c2f30fa7f9a8a1a18c0162cb3465910d596c8886e01590a92e84d4e8a40. 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/HUMAG2100041.
Hurrikán (feat. Majka) - DJ Lennard x Gabriel B Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3038025e940b7cf01875271f6e22e25faa8d3b16b78920c0cf2842f3b448e810. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HUMAG2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c78cba59b503311b8b0eb36f307e1e34aab5f1b215a5c42b3727c445b0e21c. 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/HUMAG2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d73288b8ef268716afea82f6e9969ebc6d5231e5c29348b265bef711583630. 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/HUMAG2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f766c8450bec2c4d37c98b0060f1f25cdd213d01790bbaa374ee7873f12d2a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUMAG2100013.