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 0x12b7f71da99c6dbd3aa9be6fc235150cdde3bc5db33fc18df87e096d45be547b. 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/26ce9a45-bba1-4738-acef-34993e53b7f9.json and https://artists.proofprofile.net/proofs/artist/26ce9a45-bba1-4738-acef-34993e53b7f9.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 0x919f4f820bac9dd2d76fbce392ce243b1045fbf2eedcd035ef0e8b47b65ea673. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEP2063641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ab6a51954004e75631bb2ed28b1df46a384d15032a423f6411d5f99c033d23. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAEP2063656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f684240d7bc4bbb02649fe3bdacacf6bf1fa2b0b72a4918a6cad57c63db341. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAHI2323105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ba8a5b5d13136f290e34cea8670ef283f61a85db78af40de808c99bd252581. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHI2323120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9181bad11d3b1cad659ec6ead57d2c434729a60f75de222a59daa4600acc7b80. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:54Z), 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/TCAHI2323138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccfefefa6ac90e12f4b12b923fd6be2b2a22a12b84062b87ee13256cdff087a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHI2323182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb649df0f2921c774942b0106175c970359fb08c70563e73d16c78fd9a1b5dd1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHI2323188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f07ad20e3e3d3292b55119ba083fae5a7f42d51a72591c8f36da7cfc3a98d91. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHI2323202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad8e68b5b578938f6ac855f67c73cadf98b819d5af04550cce139d5f64a676. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJH2510117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1796b0a7632b7eeb64af1ec55bf6afbe7d02a3a5f4ea1329be1d914ccefb4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJH2510165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15299fc477b0856e615d53b0fe644627f18a184ea8b8e2ebf0e7407d09528db1. 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/TCAJH2527829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03804deb49005e85ce8f2cacea9ba7ec3fb1e24b413dc307f12418480ca6c889. 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/TCAJH2527840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f16ca61d8a08588256251e2d71a2e7b60c2dc1f0f21516047c553305b7d838a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:01:06Z), 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/TCAJH2527864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc70435bb785f6dbc78a48615d4a0c43548d743f3b366fb2677698a3d4dcb40. 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/TCAJH2527872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8684a2aeb07f22a5c6c02dd0847331c23cde4fde4f576ca2d668ac3ae9ffa8. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAJH2527891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee0667b0354d7c3d9f5aecfc383dbd14891417cf7cf6bfac6b26463103bc111. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJH2527899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63eca2363ceae1c69cc40d269ef185fff06d81618ab494b9a5fb8adf717f2d7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJH2527906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629cf4387824fd019ab427830dae8a3e83faf9524f550a978638437c000a2e6b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJH2527914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9967fc5ade03909e53b0d8f6c7a154f55dfce4dbc2b03f5c61d97c6ab20b2e1d. 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/TCAJH2527921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1210db7830e44c20f34648ce0e9295ccd89a43e2308b23a108f15bb27ea3698. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/TCAJH2527928.