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 0x40aaaa64eb55cf57b720194c74489ee24c3915a9009e588f6597a66ff12f1a68. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e65b38e-97df-44af-92c5-a9dc057d6741.json and https://artists.proofprofile.net/proofs/artist/8e65b38e-97df-44af-92c5-a9dc057d6741.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 0xcd538cfb89cf073a59ed0b0e3f3e6dc989041a352a54b3e2a66388d8722c2456. 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/HUA253784301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fab5b708902c55a816a4c4e285b8b84bc2c5363b7c7b0c30a6e6c9c99196e3. 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/HUA253784302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a322db58ef28d770018c818722a2749360c5ea7d0db3f412b55b85a52c0fa1. 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/HUA253784304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b06290feb617ca8599d394bff8cb061b9ec48f42e1b9b1be1fb384c281ac79. 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/HUA253784306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18217b787a7302ce2767f6ab9ef423046a6d6d8554776dac69482505890604e0. 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/HUA253784308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1123398553007c079e059e0a9482193fab6ae419f5f1d7b767939a969673b428. 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/HUA253784309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c897f42a2197481ebdc33ddfd608106e8b405b828cb724bfdc9257e622b6e7a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HUA253784310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8223c17e72eefaa0daf99ad4b9020d3276080a8f51360d647358fa921450109e. 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/HUA253784312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e039220cafb91e65cbda317bd54b1973a76ea9756cbc60d710090364b8e757. 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/HUA253784313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04a6d4eaa83b9fdafa8f364a16d2d4e8a1b2fcee61148df9430dc766544f4cb. 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/HUA253784314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a27dd0e9d38cdd8f668717bea7782f75a75038574c781e012b5c74174beb1d. 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/HUA253784316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4024cddf2524d61a61b546186cdc0d180f07e916cdad3af7ff412329c0e99. 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/HUA253784318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6611301b7df7c00c46acffcdff8326ae37e7b728b8a9c63b992074d390c6f3a. 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/HUA253784320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0a75f8475a14ce233034bc44f008d2495fbcbd3d0008c90cc42e667b9d872. 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/HUA253784321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1844911b347120307cb1086a63cab236649f0ba34e7e51567fdb60f0a929fd. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/HUA253784311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf89f1d7911d196d1a14f7cf7c075b3a39b818258722c04ec8cf5389b00f1f. 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/HUA253770904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d4759e09ab03ed1649d7533f411f6e18b259cd33452e7adce60c7c5b874575. 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/HUA253770905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2b710da92da1457ac9db35b764e9216ae350b6d0f1d3a0f438f7ea78bdc2a6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HUA253770907.
Legendák 14: A 70-es évek kislemez slágerei No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a85f356cbb791e96efb1544eb1383d58bce0be9df9a5d672487cbaec33983. 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/HUA253795201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96c4ee735602ceb745e575e722a54fc7526cb2a5c83c0751b2bee27c743dffb. 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/HUA253795211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e849a76775c2cd1a40567cf70fb93f74053372ce59841e205dc2598af17308f. 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/HUA251799607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09a6decd7fb28df9a3486525fe392cfdc9349ce9d1edf0ca64dee35b26d7f1. 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/HUA253753001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6409b1492623636203e37415fab1e1f8075e58a625ad64ba072a8987001036. 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/HUA257115001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5489f709046f66b283e14dec27d3f147aa3df981de8d8b6c52b3a23355d39280. 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/HUA253794117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582c566c04c06bf5d05026c7e3d1eace4a9545fe405f7ec9c3ee71e7d690e30. 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/HUA253739812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebc46402137dbc859e076591e83656b50facf25c898457496dc482d149f0252. 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/HUA253795111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a10356d45508a0197370dbd12fdd99768eeb3d30043168e81aefbc60c42d9. 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/HUA251764509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d66036df04df8deeeeda7dc67e13e575334b515e971a96cac7df008553b1f97. 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/HUA251789605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7909ecca9633ba638172f4693606fe0baff4e17668af04ae3c03043c3785c086. 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/HUA253769601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e914654c4a0d84116ab511aa22f1f24c01468d676422078191a9c7d160d3cf0. 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/HUA253769605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a15249f97a62c036a470e35db1cada0b626d38f111fdb4f0d6eef83e8aad1. 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/HUA253769609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c7ee0d5883be3923c5583428a2899c939b6b961a092b3ebd7502b8f10db136. 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/HUA253769624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2ddb99c11961fc3da0a671c8fc09c5f79bf84ecda01fd3afc728335fda1eb3. 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/HUA253722914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4b9d9142e7b978f60e594b8d90adb02ac24d40b33c74005201e11149273a8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HUA253722902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1544eebedd4b67be04a68ea7d28e63f0b971e7e32d99b9fae926161fe14857. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/HUA253722917.