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 0x0e062365c44a39fae8a7763c9d8620fadb0bc93cf04b15877c2a27208a4806f1. 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/6282dc9b-f5eb-44e8-b5f0-5c1ca8ad34e1.json and https://artists.proofprofile.net/proofs/artist/6282dc9b-f5eb-44e8-b5f0-5c1ca8ad34e1.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 0x67ddf66c387ce97987e536691ad47f1c4ea28c1689c847f0719bf2e75d4919ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEH742416988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cfcb6c167809dd309d8ebcd1bdbfa5299ed015b43b57fced3c9300f562fc10. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR59R2320135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef9277471f9b3508f029a9427e391f80e63e1c2e511bab760d815853c7820e7. 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/FR2X42253626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306bd2d23112b557c0efdcaf859028c3a61da37bdb9cfdd0c9eb6cfd399246c0. 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/FR10S2281371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e474ac06ac4875abcb3b9d4a9f8f0d75a42d616781c6e943e3e99f8b7edcb0d. 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/FR10S2281372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3d358011662585d264cf050cbc2c93c3639cb727f7e8315007742fb516f5a. 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/FRX282159216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeafd475638feefccaca2222fdc4ee4c028a668253af424b46cd7b0ef4b503d. 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/FRX282159217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4985f56462f5fb2ec4f4e2c77c153f7d393c1316c3dbd1266c2e85fff09ce991. 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/DEH742424987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ddf66c387ce97987e536691ad47f1c4ea28c1689c847f0719bf2e75d4919ad. 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/DEH742416988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bcbc0368561a806e52c593e20ec7e1a52dba5ab68be0d9dedf76883bd8e2ce. 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/DEH742423070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38eb1a44a75001e057a031ba8ffb01d492c4afdbcc7b724579a948dd19c72a6b. 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/DEH742417415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23896bd11374da6750922b17210e954f1afd2541ae6012e229cf1309f0e44861. 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/DGA0P2332419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ec0c5e53b5fe5e1cc09ab54a723b14fa5e02a4ad69173ab6ca1820c5f487b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072335943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ac2d36a11075199790958d8c0bf2c613f6b6434344dd72345748c2551dd89f. 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/FRX282384373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f8754f7425526c2d5c354c2f5cc2a70f7c182f7741ad5e5108d7b576f7f20f. 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/PLI571300749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa39203a15ae2153c5f2b219f33fd257f4570dcc89548ba446f057e54e18a320. 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/QZNWU2109449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64997b6c32d0032a304e356a05cc8cd5486021a71b36fc7a64b0da4efab87265. 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/GBKQU2266749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459cc70181bf43329b0aa239add23216d0619bfc95ee6857711aab0c622742fa. 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/DED712200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d1839e16b1eff2a20dfce7edff6be6ba9f72fd7fb6aaf017b97ff27a264920. 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/PLY402200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46455b4e2fdc109de4910b56661a4466dfd57b5c5fed726d46243ab0e6fd64f. 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/DEZY62200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3e509396c20eff51ebdbd130ab652ff281a8f72798ef6501fdc805efce0fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEH742442673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f2bb4e0ce75a13f5e9d2824ed54e962645f3b210bc3c0525a27e23421e49d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEH742442674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1210ddd21777d907a80f18e662d85497e3575d7c27e31f61877bdf783c942b8. 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/DEH742505052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03875caae81a7fc2045025fe29ca078924a838ca29b521405b2709a4eb1d4df. 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/DEH742505053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33869d382289064aaa94d7d8969f819dffb168d39dc2fd50e2ea8711548a61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEH742502129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bfaff2faedf25eb023fb6bf2bba95a7ac8f29bb67f66dbde8914a3d7efe26d. 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/DEH742502130.