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 0xd52ff3e248ab65f0985253b5008449cdae6b70b13e10d716a55b0cefc2e61ae5. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95b1327a-f564-4bf1-aa43-af768435ff3b.json and https://artists.proofprofile.net/proofs/artist/95b1327a-f564-4bf1-aa43-af768435ff3b.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 0x03f9549636ec16fa52240eb230812ea5b96201eccbc0585acabf603d48e68f9a. 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/NLK849000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604a147d2848ad4bdeaae72f7a9bcd00fb15608d5ce8faacf58483705609b019. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NLK849000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3f7c818e9b18494e46232da017e63b0cf1a4135f04f27119ad6696c9c99d1. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/NLK849000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb270ac21bec267848b5917a1739d199c44d14923f0d2ccbbec4f85d996589. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLK849000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d63ecc225809b67c603623cd9c4d9973cc89ddd7f4d5f758e183a34b11d23f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLK849600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea9f1ce42fff81be5defb6fba8fdd99c9b00dee8f2e84af55bd2db068901a57. 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/NLK849000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604a147d2848ad4bdeaae72f7a9bcd00fb15608d5ce8faacf58483705609b019. 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/NLK849000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f9549636ec16fa52240eb230812ea5b96201eccbc0585acabf603d48e68f9a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLK849000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd311af3372e855a411fe250db26ff01fc58c9cdbeeba8887d1c44e26d5a33c7d. 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/NLK849100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12e6d194750dc59b61bd345e68cb32babf5d5a6ff9066a92b24263a808d9c42. 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/NLK849100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8265eb39a088a61a05f9f97fef8e951efa41e27c9f737d099331fcbcfcf93ba3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLK849100002.
Interstallar Overdrive (Like a Faxmachine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e81deaf1bd780b9cef6c7b37bf13eded06c8e585d9bc9c9909ba7a755b1d235. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLK849100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b62e8da3760e2afb0659efc21da263b7ead4e2f8bfea5a91a51425a0929c97e. 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/NLK849100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bba8e9573e3d3ce87b676da9cb3a8f248b04e592704eb0693e6048d7bbb709. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLK849100010.
Set the Controls for the Heart of the Groove
Yaaah / Techno Trance (original mixes (1990)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e1e97cc1deb2dfc3ef8566ee7895305fba2678edee868d54c07fa311d87af9. 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/GBKQU1641213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8a1f53d999fcb9d582699fc014203e61add09a081fb331400799161bbd2547. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBKQU1641214.