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 0x3696674bf8fa724233148bf41c74e0bac7082b1d9336d0fe2c650bbf8e10e251. 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/d2b02586-fb21-46c9-a0d3-10d72008fefe.json and https://artists.proofprofile.net/proofs/artist/d2b02586-fb21-46c9-a0d3-10d72008fefe.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 0xcf431baeb78a9e2f5bf7b41a164d7621cfe302b84001bb2ab0ca1cfabcb3f6a6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DKLG91000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d60d43a1c80a96c143910a0f92b383a01bb94a9300346feb585d3fe7863846. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:56:47Z), 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/DKLG91000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9bd1a24dacd36e5fb77306e0ba24b7550f66325dc6db3aa24e078633b49cda. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:21:05Z), 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/DKLG91000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eac8ed74350ef058d73ab3198fd8bfa5a37119f9a69aaea1ba62936f9d000a2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DKLG91000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c63fa1a87f840ea87a7cf6b45b6a3f936897ee261f3215f64ebb715b0dff5ab. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DKQTB9800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0700dc2e3b6b3830efec8e26b6b4b4d50f38f50693cadf1bb433f9d797ca2c9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DKQTB9800207.
Han er grov, men han er sjov… (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efbc0bbdc64dc3f94e1a25fe812e1c49c7ea406042313e3b0eb5ca519c00b47. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DKQTB9900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9dcfd548e9e6ffae972659da0e98e909bc9e7a7f092803ff7c1dec5b0841da. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:06:30Z), 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/DKQTA9910202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab328f6d60d038070d0de5709c457b280e4718d4830269648c06e48151ec9ee. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:00Z), 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/DKQTA9910205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71f9600a1ad993b8ae5a97361d6ececf15d3a61fb65a53bf63c2e9c521e0f6. 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/DKQTA9910206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67287ffe1de2d4ca5ac554fc67b1aa502c1cc0c60005f70f5d8c02d938c990f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:44Z), 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/DKQTA9910207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa066125ce368d90aa9a2d62d17076f7e34d38a9c28c2abc264df55167a5ff8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DKQTA9910208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f6ab646b9243e43092fd3a634e6b4d1c3211948402d84bf0da904d7fc47ba5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DKQTA9910210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be749217b7ee8545ece0376dd1778fd42a6ceead14c23abf2cef20b89e4ab8f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DKQTA9910211.