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 0x31c7fc1f88b65b509e50a0418ac7404a38a21d1387c6c4ecfd56641621c1bf76. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60cb19e6-df7c-481b-b141-c74aa954447f.json and https://artists.proofprofile.net/proofs/artist/60cb19e6-df7c-481b-b141-c74aa954447f.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 0x03b55d93eba8700dd3d3b3e9fcc0e16c666cb3139089797e89696b7d040636a2. 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/DEH742330880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbb8faf71a72b7b48557175fd404e16d9754356abad386c233bbe93dff71af. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEH742330887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55755823e676207b055494314149b17dfbddd3c83bd851d3cb553addbcdccf5a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEH742331456.
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 0x5056d23323beb31041f89f8f88f6eab14789c6e9c4ef436380c1d2ca10b55366. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKACT2373237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f698dd5b7300a0c498ddfc33176cb4cfebc910161b1dbb2e25eea32bbd3037. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKACT2373241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fbc0cc10f818d664b6775cb43a53afc63456ed1177546e8506e6ebd66e3c1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKACT2373242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bc762b53abf53bff584151b222e36f5c3471dbe719f9e8d3753b7f531f478. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKU932460090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0889fad85e6356d9d57be83be3789532733d8c0d1afd9e83a0dd466ba6044fef. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKU932460098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef433ca51c812c8c6b33977f54d0ec833e948681c8a927bcdc9a651e8fb7b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKU932460099.
Creationz, Vol. 5 (Selected by Switchcache)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2a1e628645c3bf14071c116a1a15a11b07b68843b604216be7a54ce95b8d85. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKR6V2282490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa477593a3737d5c667af9111aba2d056fc00ad42a12bace9dc1aa999727bdda8. 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/UKR6V2282491.
Nonplussed II (Compiled by Ana Valeriano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374859a55613f51d05ac7a77ea9a51515c8e9cd29ba2517511aea16264fffd11. 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/GBKQU2310914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc428e2cb9c02250c03ed30a2ca8f72a2c2a9d3a1d370c43d663fe67bd4480981. 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/GBKQU2310915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97319f1a5519bd27025b9b0ab9cb0ed419c23a17800b25a13a31f3da5a306d7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU2310916.
Riddikuluz (Spellbound by Psynopticz & Patronus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3b90e6abf43b75f052e3194c84f02b397cc29399bda8d866ec6dd997e25e52. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKU932460740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd77467c64b3fc82aeef94fb73aa55025c075ccbdfc484459338a1ea513294f4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMZ92317267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb1155d650b38d578ddf52484f48abc7c7d012f3680b068bbab83c81d138ab2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92317270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d1f3da3fd68ded4e080d1cdee2ebf47d395a0a4945f0aa42014a56792e8155. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLV62215448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fa96c41bb037c370d1a8d648a1177f387fd0cbc470b66bb25966a88d1ebec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5FN2361629.
VA Connection Vol. 3 (Compiled by Neurology)