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 0x825b821476a9059502cf616bbfc811a62e15bcd71316a21d3336301ed51282ab. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9b8ef25-7dd9-4fc2-aeca-5b469f83d67f.json and https://artists.proofprofile.net/proofs/artist/a9b8ef25-7dd9-4fc2-aeca-5b469f83d67f.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 0x85de5e718e2fdaecfb64caa5f14e8200788fc4d642132d7014e533524750dfcb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253750717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a85f356cbb791e96efb1544eb1383d58bce0be9df9a5d672487cbaec33983. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA253795201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95069e2c58f0d99abf34cfe54b440f64ae23bc01c9b39ff46071df1502f1c5. 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/HUA253776313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d549a6b806a233589ea86ed5e33e16d7449d86ec09f6021d75b88c2e9ca12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253750601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f117f265506f5fdc19c1141e3bfb8a547e7d6def69c802d35091f926c497ed. 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/HUA253770601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ac16accba74f08727f4b686d4d8aabb698913ecd79ca6444a262d083817bf1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA253793909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa17f0cd317b5edf2df403a9a59623d75e7781737bcddbeb5fde7a8028e560e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA253771912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc0e56dc6f193eaf846789256caec3fa9ee0b7854fec09ba995a7abbf748dc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253720417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e39820b87116285a9302588b9770c92d4d8287765c6d79a4cc20965f104b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253768808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd729f56ed9b0aec66775cdb91321f48c44328cba8c17ba56d68fa479d5d5c88d. 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/HUA253750712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb507e566738dea25a8fb8804b6c669eea28e4876e7cba49dd52604779afb658. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253739815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439b122513b2d27a7a5235465bd2ccdcee6fc514d7ab4e85c8254991f76482aa. 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/HUA253795114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8901fe420b07ca5b7dab925e28aa5d3615c785cd07af8469a5a15632d17cb8cd. 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/HUA253753003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e62f7586ef690392a71cfa6211426e2a1615fcdb38dd56dc8a499c64d72b87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA251749103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35261fb54098e22f45e05a91215eeabc5b10c7765dd3727811a4c81463ff6e2. 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/HUA253791212.
Legendák 14: A 70-es évek kislemez slágerei No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba46911a2906525e306e00411b6df75e50efe3420b78891b3b47ca2acda7d9d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA257103108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e2a3b15daae58f0f7c77f918f371cf5637d0fab41c2c30de474b75a31384b. 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/HUA253799302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2ffc6c642823cac39996f7d60f76a7861d901afe197ae6cf9aab91839c865. 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/HUA251777611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e2a3b15daae58f0f7c77f918f371cf5637d0fab41c2c30de474b75a31384b. 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/HUA253799302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a907320b509e8eb156b82190683f4b84bcb369d0d947edff66aaea5445e41c8. 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/HUA253799303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954be293909daa73d3ec75940b27a8f57f30ee68773f05b524dd1e91f9bf156. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253799305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e04aa8a9e42dd5adb8f651563339673e0506c2715ee62ef531acee85f42ad16. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUA253799307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f776f9c0613ad8517f2fcdc146f5c50bd9409a43f18f0e33850a9222c0211. 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/HUA253799309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812aea1810fde42104f0dde738c6a0a6fc593635fe0e09a7ebfdc142ce1c51b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253799313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8255fe033248bbc372257ce69b2a3a44e6521098015cf37b93e035cebcd4df0. 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/HUA253799318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc72f6fe9c3c1b234e7ce3b0b96e0fc2ed53d149af4b38a50a12170085905164. 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/HUA253747301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87612890f3ee9adf7c0b8a25a905fa95f55404821babb09444bc2091e9b0c2a. 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/HUA253747304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a814abfaa5f14159aaeedbabe810d87d88a09c535f94b68c26e11f61a624d3. 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/HUA253747305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6989e505f362c5672856fcfbb970cc38296192e824816cbc97757be9966341bb. 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/HUA253747306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e58a949e3fa86f1e88c62dd02ba303be1876c47b12b6d3882fd6990066f67. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HUA253747307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c17e3aca23897b62a18ebe7452cdf9aa803499720a0f2e2e4ea03a3765d7b3. 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/HUA253747308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aec4509fff129fb6b77972d07f39290f8abafa80ab17665ab4e10c68af9afb5. 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/HUA253747309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790f58552b6ac67358266e45edc644f194951a8ac5c75c01d2c0850ca0ffda8b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HUA253747310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b596ed6091d2e8bdb7a7930bbd5888ce9e3dc0a3afb500d043cdcc6829801. 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/HUA253747311.
A szerelem évszakai: Tavasz - Nagy találkozás
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ac2ac517d3b298b5a0438eaf2bc5e665a2b02c092cf7827410a5280807d716. 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/HUA257135710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05882c90ecc32f7c591aa692f8e9d400e9e0f45d42b244803550150d6c932e08. 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/HUA257135711.