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 0xb88e299b2f683c8cbebe68a7d7c399d6c4e8b1a326531ae228af95c048fcfb22. 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/0db50d8a-11a3-4e52-9095-f3af00b392aa.json and https://artists.proofprofile.net/proofs/artist/0db50d8a-11a3-4e52-9095-f3af00b392aa.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 0x472339a4866d15083379f0c4232a1df1638493141ef89814acf99ce806772655. 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/HUB741327202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8b325b1d329dd19b1823a34e19481e5cd36585559a8a5abfa11a9d54873f1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HUB741215203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0b010ff16c3a8f6fb3cd9007b167711cf5250cf40b7cbad30beb425b50dd86. 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/HUB741544204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489f8652975b818de6d5a946f542928c22807464ed21385561149204c45484f. 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/HUB741759202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a91da323e45d57eae8c1716ce10998549986bf0a65b2d1804481eef60c327. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/HUB741865204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a65fce3e0c86325fb9d54575ea8af747159942950910fce4608155d44a84c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/HUB741865205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749e1e64dc3aac55fe781973e991c9b34e3f546a8048b524cf657e16b4aef022. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUB741865208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670c208e5219a21819c167ed13e707c5e8c44e18b18d52692e3a68cb55f2ae9e. 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/HUB741759203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d59de59cedc9b77124b8682a979ca8508980e2768cdf741b53b5c5ca5f4691. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/HUB741865210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb022d3d3325393d4fefd43bda180dea1097363bbdf858a1abe1a8639fb043. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/HUB741976201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a05726f9aeaaede2c1a6f82228c1cd53b714849747c78b2363d756d82869199. 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/HUB742110002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c082c9dbd0ee2134a106ab0cba0c1f6f5b9820d178c8b5709772174dfc4473. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:17Z), 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/HUB741976202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f77eb56088566428ffbad9c40435c09e2db6e435ede79489771dbd5fbb60c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUB742411601.
Tükröm, Tükröm (Kortársak Quimby Feldolgozásai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e64aae11b084ab30e91ac7b72f3ff98a9c544a3db1cabad6f4acb6c0a065f3. 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/HUA181624611.