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 0xb49cf9b1baa3e432922b6a6788e512a048fb5ba8f6b59bda7a0bd51840597b2f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/da2d037e-4517-40e6-97ce-e6ee5ecad141.json and https://artists.proofprofile.net/proofs/artist/da2d037e-4517-40e6-97ce-e6ee5ecad141.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 0x07f0b2b17fd8924ca31e3ddcb142bab381d74d2a73d697cd8509e6c854a77ae4. 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/TCACH1551113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b22b6dbeeea7be861819ef23d64a90c00354eac5886eadc3dd8b9e44b331843. 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/TCACH1551273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf13ed7d548b4dbe9926063680f9b56966f13b69b30cd24ae67f37bbc663a56d. 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/TCAEO1924785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1336a23fab8d939e228024fcc594be42df2e5dd24a4240e285d7869750992c40. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ52081820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57da792bad33dadc3dfdec3390c5510691f165d4e5a7eb9b43757eb8e9ae0818. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/TZA1X2100952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab0f275a45d7ef0c162d10ac13df8f208f45a45b99773650c8585fc84d8250. 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/QZNWQ2116228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100a4dd2a2f2f959a546df209208ae86f0829afaa590c93426b6d21885980ad. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/AU3UG2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181bacd6d98df4e7cff150ae31f57a3a8519cbd1b19925c40d8f3e63254adca6. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/TZA1X2300485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c6f6f45a00d23d3bd38e769d8ee4baf20d620b6094904f37d4d2e4d2f69ada. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TZA1X2300487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbec7e5b57e8200fae39788276701c1091a5cb3969af4d0a7b49980341a1653. 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/TZA1X2300476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b322d040866974ec8710154ee81abf6936453bbdf9994131fd0aa903425bf7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/TZA1X2300493.
Himothy (Not a King Not a Goat but Himothy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadbefd4934dd16d54ec7520213f59128896f8b812017b8453d30304c41d977a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TZA1X2300935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260e137e241ca749fd97fea6bfaf2b422786b18d291e73309e8f765c0f5cd3c. 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/TZA1X2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd56e2f8886f99d73cd07bea7a12589874b06f075a5971b9ccf0a5ef07c18d3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TZA1X2400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf607955800d24daa034d4c37876d2e2cdd3841915e1d3ea03bd69c0b1c32b28. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/TZA1X2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f18156d5b54009e431e95127d6f4df34a0fa9be07768b4ff51e7b1e4ba4c7a1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TZA1X2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a147a026198ef08517209312cc2c9e905abbbac6a49b4707c7d233797d9564e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TZA1X2500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc873e389e708d2325f484ab43609b7808b3c9ab7c5430a55e2d8cdf8d97e2553. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/AU3UG2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04befb52947277fd414325d36f813b4a54ad73f6862a659a663dfc31bdbce4b8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAFT2116555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef93f0fa87b6e11b090fbdc6eb1c350348e21206244e309cbba4ea63295df0d9. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZMER2076850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598a45cead8091376be87226c997a77f3e83325f4de0dcad0ec72bb3059a2307. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZMER2076862.