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 0xd8aa996effa2cd6cf4af7a65cd247c467a397ae49019b7ea6c9e28d71380a5b8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5444ad2-8ef8-418c-897a-4be876c4767a.json and https://artists.proofprofile.net/proofs/artist/a5444ad2-8ef8-418c-897a-4be876c4767a.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 0xa28da6164728f81e9b78578a13cc7a4cd031d2c8de459c004603e81257aa48e7. 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/HUMAG1700262.
Valahonnan (feat. Majka) - Roberto Rios x Dan Sparks Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7ed61edec4c058dbb29bc6b9c0979910db87001b3772669d0e4af7b2887caa. 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/HUMAG1700341.
Valahonnan (feat. Majka) - Sterbinszky Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8a734bed960c35246ae6ba678ec62fb671ce98c776f68cea78ae8c3179459e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HUMAG1700337.
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
Valahonnan (feat. Majka) - Roberto Rios x Dan Sparks Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22005e933b3ba4730730431ae58733f6dbd82833537ad0daff09439831c9574e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HUMAG1700338.
Valahonnan (feat. Majka) - Náksi & Audio Jackz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286344399540acaaa6617c7b938fccfe420055e83b9583b03a22826c1bc8b716. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HUMAG1700339.
Valahonnan (feat. Majka) - Sterbinszky Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538c06d6ff8cc127812a7622ccb0174a4b069bae4f1207a53edc2384ceef951. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/HUMAG1700340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15fda73906ae36f0ceb6fa6e23b69ce60d411aec2e4edab074d6e1db225c52. 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/HUMAG1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa813db79dcdaeec6846aec91365cb7a44d14cfa404ba64962a912ab8b7f4fc4d. 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/HUMAG1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65406b467818e4aa61aead99f7384372acb18b85f1a402d7bb066ddbd6bd926. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA612500527.
Régi nyár (Az Efott Fesztivál Himnusz) [feat. DR BRS]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31842f14d3d84a0a021bf0bc303ba78180258708c5f07663985aa43d25908032. 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/HUMAG2020400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f3d290ed702bcb27c1e76c8eb27d1ae37b06fee09f6fd8768b55e2ec9aa44. 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/HUMAG1900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc753264fee297bb4bf2cd7190a8be8eb1875bf5887afdaaed613a062702329. 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/HUMAG2500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda16c0c7d6602e10c5c7a0dd5a788ab8413bca7292f98a9f9121943332a3d350. 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/HUMAG1500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fe4c93277362c30b4b984d99d5cb5987f57643d7711cf69be4de920f178f7f. 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/HUMAG2200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba80f7c0d9294129e9bdb126fae50b0b53ceb5677f0a7b1ba569f580c0d4158. 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/HUMAG1600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd15bf68e2ed85c0f4b0171f5e1f40dbf260e68e1bf386fc889201da41ad6d1. 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/HUMAG1500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f65847366108f576e8e95767c497775f8e01ae469d5d194428e92ecc7a39ae. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HUB501700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe534be1b8ce6f2fd8f15f994641c77e2fcefd9cb32e93c7b7b68f380c41d459d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/HUMAG1700342.