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 0x3bfdd625f795f7f22577a6354763758ef5cf229c5f63a7dedcf6e9370906ca77. 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/f82c0cf7-0f06-4d8b-b1bc-de345e85f5c9.json and https://artists.proofprofile.net/proofs/artist/f82c0cf7-0f06-4d8b-b1bc-de345e85f5c9.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 0x9dc478236cf06f9451750640fe33d343405f23a33c461a8f6eb1ae36c5b1b7b9. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:04:36Z), 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/DEZ900701597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821afcd6a02219b1fe1e27796d43275a046fbb5b81071c2b79820346f6655a05. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEKV20910308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880490c2d47c272a41b42d840c1b86eb6361530f0c2c7cbd8a3d39e07beb8f27. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:39Z), 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/DEKV20910310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab5935fa50f4de4ddd9508bde69881d22caed86f8b0fb0a7ded89f49418598a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:18Z), 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/US57M1068802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f9b54ee8f72ef032305ad646597d66f7d364c74c2d55440a9b37999f9e3c59. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US57M1068804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ba0ab65db881987dd46f717ed04b2c336329a191de853a45a2dbeae8b4fd1. 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/DEBZ71400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab08d78a7107e2ffd51db78d56ee98d3e461b1451c9997ae8dd8c7d0cdbdb7. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEBZ71600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d7b967c6cf0800ca226e49ec41b13ffd5985323d9d1de618b2e0ccd01f736a. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/DEBZ71600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb314a23f79e7d16d2cb8a37c661da3c3e4a8846080f63eba18face92bfd4ef. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-20T11:54:17Z), 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/DEW271328849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb27131aff9873e36da8dcd60409dea9f55122560655888b0a3ca2f41ffdc61. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEYL62100002.
Stimme der Wahrheit - Hucretha Remix by Heimataerde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d0b46e0585e94808c8d803aef7fe8618084efe4e230c9372186a8efcf099d3. 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/DEBZ71500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eb7b1a3da6160a6457fb38ecc3abf0cece6689ad59a6822cf55e4d18b48ac6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEBZ70900481.
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 0x900f7414e52950815cdd2dd54601e7831e974b9e530e0163de119606c8362a65. 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/DEZG82111520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ed20692f00f02c6dd7e379fa489a4f7a77f2221507efbb6dfa1c73d5ad17f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEZ650604731.