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 0x1b88ccb3abed79a4baef5523c72d8aa445323a4d02c7cf20290b0a61aa63600d. 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/44f62c66-6867-4c0c-a76f-37dac671fa93.json and https://artists.proofprofile.net/proofs/artist/44f62c66-6867-4c0c-a76f-37dac671fa93.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 0x2ae85201433494bc728580c845399bd196519b0c8925573d28dfa6709faa8f81. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:38:28Z), 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/QZDA72003728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64e190d0ec06b0767364cb85db6b3f26eef0015a53ac3ccbe939a2ccf839433. 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/QZFZ52157128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0384b32a6ba1c93a9227363ed551bc1a052dfce881d61a718d64cd4a0b242c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:30Z), 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/QZJG52144378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f2cf5d5562ed211d892535495c90f145d3e8a2784395df3976ce94440fd912. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZNMT2105708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2259389870fe4d750777b6d965bf6b5347e1333b757d50839d7fbb6de5408613. 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/QZJG52235199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78eae1ce8de2362826192122be93ad26fbd02a954832a26ba09c2e57e6d89a5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZMEV2264842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882bceddc2844332aee12b783d68246dc02e0aeb7886195a75a9abfea6ca9c6e. 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/QZNMV2235607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b75df9128503a1efd794993d96b95b21f2015838ed2b47356772407576a511e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNMW2274918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46085ba980e61ff491ec50f370682ee3363d3aa9277880ac44411c89c3239a92. 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/QZLL92326964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197d0817821b9888d28f882986e3d28899a1012b6aa65ae8e80caef746d2266f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNB82355245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa8a6a20779c5863b561b6c3dcaf284dd1e1ea4f70f2f1c2cb8019617b9273b. 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/QZNMU2373341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4945ab127d5ba6255ccd773d82018db73f338354166b33e5f8f3e4565f1060. 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/USLD91748595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef11018042144ef8c76deccce28ce2032b64fd24d7ca31335d892c879f65b9fe. 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/USLD91749311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3ecc339cd72036f1b8defdf3c2d7c8d8c06b5f4031e5e10f5efc50a19f8134. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZWFK2304010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d2d9c5014f90de63ff28217a3eb2ae54df030e6b56d29eb269f3387549291. 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/QZJG52486708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d9ca612243b4887389eb4df6b04b21b1e1667b87adf75d3e04a83c6ac8b0b6. 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/USLD91760040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb1c7e6c7f8ead6993cbce86911a427f6fa565e888edda523df0b085c7911ab. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USLD91760041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dda77cd3f9d6ecb3dd7236682c71a4684916f4f21fee854a4679cd346dece89. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USLD91760042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ecb5b5e831b3c7d27ff1c1adc42f28d25e67258e8f7a653102d84589623c61. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USLD91760043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e833e0b84cc644c960d318676b3429e329757abde4eb72068264bd9dcaecae. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USLD91760044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464039eae87cf30acc23c3c2d6daf46ac06f84ac839944a9f831b2e200d732b3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLD91760051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5218e554268ac273dba8a812958609460f26e3b2ba0f3eedfa17c2317cd336. 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/USLD91767549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ce0ac04027c32beb7e39d443715b5140f171f7c6236fbc5057cae2026b34a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:04:16Z), 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/USLD91767550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e71280637f955c9bf00bec147bf10903480cd09f3f1d2a63463a30619a2d05d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLD91767552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eeb868e766b9f41472f64d9e4095a62a3b72ad78b618a42d27d705af4ba485. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:23Z), 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/USLD91767553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507c8083ef80e7e1ce6f39fd0cf593277314f21321050885b2940b27eedf5184. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USLD91767554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f5575df56ca56e7eb8b7dc2ed37dbd4971b97c0e473b7e5f3431018de74809. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USLD91767555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc078238a2f8e6686c3faa07aab854fd2d8627aa463ec189149a06b4b9a46877. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USLD91767556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62740ce27d16a8526f8a13f976266675690520bcca5595364dbac8fc00bacc3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:00Z), 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/USLD91767557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7ef1042f0520ed2567664650474962943e99b61c257407af6dc71e609e72e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USLD91767558.