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 0xa750eca817ab981b294c6471efc51793b30dac2e2a9dc194db6518c5480fc490. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e51926a-2f7f-46eb-aa72-1f9f802c2105.json and https://artists.proofprofile.net/proofs/artist/4e51926a-2f7f-46eb-aa72-1f9f802c2105.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 0x264b13b9897e57f2634f60c41dd7576933e7a20c14875826045913fe1380d32a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6N1912114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7898560727f2bdc05bd7f05f6397157dca99e82194154bc1a2e2f67d728e17d2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:31Z), 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/QZK6N1912115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46916e64e1ec5054aedfd5b4e47cad4a1a716839e3621a685efbc7af07e8fbdb. 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/QZK6N1912118.
I Hang out with Zombie Without Being One of Them
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c125ebe04818219d556dd30ec34c7d9d03af98906ffbaae817c9e8d474227. 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/FR6V81886934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046536d7949e6530f0f4423cbd77713c2edf465fe5c4e52779f487ccbf573233. 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/FR6V81886935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97f34317a11555e1a5a575b4bce58fe5c6a064490a943bd525bff014713345f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FR6V81889334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d6414c6d4e17a7a27ceacb0cc041f8b60650faa98c820941ab5bdcacfed29e. 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/FR6V81889338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c83d4f0fcbdbc1118f767a4d976f7d159235316031bd60a35899616e581f4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IDUM71600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafdcfcbe34d7853f7eecd1b978a1af6e918a6cdf6bfe3e25f682d8f1417be0. 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/IDUM71600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f9b6db644d32e5a77f5476656050060423a53ffcc140e0814162e7c943466c. 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/IDUM71900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffef4f3266fa8ca8e707bf17006ebb5c9036803623d25a5402fe2c8ff27c42b1. 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/IDUM71900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d5d7aae519406bd71db5710e0fa02fec681a0c937e4afbda72d03eaeb744af. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/IDUM71900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff343543e3e93207d00d63ddbc03a3ec24a26d6403154943899cc32f058b608. 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/IDUM71900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d53d741180e98a8b2e39cd8bde2d7a8d7a03ef59e99f2a4d7363232129958f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IDUM71900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3044ca68a4e920e4b0b6f089b947ebe419a4cdee80354b4f355a56e129c93b8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IDUM71900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524129e57878f6b4bcb857f54027ee42afaf610b10bc07ed15b1d4f6f15b32ae. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/IDUM71900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff343543e3e93207d00d63ddbc03a3ec24a26d6403154943899cc32f058b608. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDUM71900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0382f2d5c2f8e7efb87688b3baef01b0f7ca09a95c49e19b66057ee4daedf549. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/IDUM71900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e0826a28fa3677e20b93e3b4ca35ac35f9bb8769f2f51c373d3962c574ba85. 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/IDUM71900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2538d09b4b433c2a7f23f7bbdeb9f885ad26b5b38222eb934b39ee075b8343f7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:52Z), 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/IDUM72100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db36a9dcc5df9ad4b3c1666a9b559d7db8e072d40d068a403f9fa00b5e2a595. 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/QZK6H2129591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6db27b08f83d96454b7b8da34b0567876b63ded01c93c89ce42bfbe8540ea7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IDUM72200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77963160786f4c9fdb04a90c975ff5c63223dc0280ca50ade97450859d2cb25. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/IDAC52500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9f2fbc9b640e59058b38326a8cd9fc5dc37fb9d11ee2fc7ad3084b06f67fe. 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/IDUM72000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb35a130bc0cec7b57b0967c3f28a61699b27c61c813e6b37024bb6fbf9a04d. 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/TCJPZ2463023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb35a130bc0cec7b57b0967c3f28a61699b27c61c813e6b37024bb6fbf9a04d. 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/TCJPZ2463023.