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 0x678249ed96d38e37d7f48e331fc79af7bad87ec6bfd54dd497932a96b29a9f71. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b30b6585-a07b-447e-a1b2-5148c509a71e.json and https://artists.proofprofile.net/proofs/artist/b30b6585-a07b-447e-a1b2-5148c509a71e.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 0x7e6a6e8cd679ba32798e5268fe634efdc2991755254d6e686ead18916d39a845. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USDY41872487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c1035f520d74e58fda0b6cc1ba8a5b09c2c73329fb2c8f812cacc2b7f67d6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDY41872488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5de463e46f7b2d3034774dc9e72d856012b59609e7c2330da6bedfe1cdaaa. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:22:45Z), 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/USDY41872489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e6515f3f1ce47a8231c001f8e07756210a6005aa3317bc4893fbef59bcdff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:29Z), 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/USCGH1982171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dbe8a26864d87b5fe9e1944e4a69d9c4bf553704be81ca48d2abe2bcf72297. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:10Z), 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/USCGH1982173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60975c29a84a8ff7d20b92ac522daf13e80393d41a4e3c47404682de9952563f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH1982174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216bf4f02e6b6d14f15fa41202c30ad1fff28805bd79a24c6acd797432b6d07e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:30Z), 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/USEZ62021803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dde9bb767e0813467d5f86d13954df524b6676ef773701255c45e2c54f2037. 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/USEZ62021804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c0452e72f02f9e5f4be4a98f4100fd88e2d736814a69b596d56d31c229dc61. 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/USEZ62021806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4669557f5de45df6e94219e58ec8d246295d57875a0299810c200d18a1401cf4. 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/USEZ62021808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51155481e13c2f4697596e0d32cf21c4ea388ded81f144697e33dcfa20caf515. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:12Z), 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/USEZ62021809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f18f0d46890c18e069a727828deaa154fd1e4e527b3ca3e200982b3d0c360a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:47:36Z), 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/USEZ62021810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0b3ecd2569a9b7e83b554b8ed7c2381f67142051ab697a3c6ec6537923e763. 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/USEZ62021812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa54c66a33ccad611b411f90945d3f65faef5f9e5380b7163f17f5468160d1. 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/USHM82153785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b03f4db106770dab178f25994628e4415a65c6f4d9d798f9696b3e5a8da84db. 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/USHM82153786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a92ccb45f3e0698e45f8b5d5502d2ab634e57dfd87119fa939bbcf293022e48. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM82153787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2582ca5f33d10087f228a8f6b80888223786bc6cdc1311f17854debf62793b98. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWP2271804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5abb7a38c2831f530411d72ebee6244b8078a09189e390b389cc3eeb6a78c9a. 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/QZNWP2271806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed72f50990aef94cb1d98ae1a8ca3202e92058880ab0bf13edaf4b63ad1b3dd. 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/QZNWP2271807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656babbe09849713023311585173b5c1e9e3d2af14ff7ead9115f721360ad5e8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNWP2271808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81475912fb885fb69352c98eebb7ab41d775ddafb0d6f5733f5ab92743f9f039. 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/QZNWP2271809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043c211be147d931b2ee9be2997abf2fde4ae6d8511ca13beebd47b9183c2603. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:16:52Z), 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/QZNWP2271810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169293c3bb8bdfc4fdcea9b58189906ed409fff44505e21e14d3d7cfbb411932. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWP2271811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6a9be2d930d4969d3c3ceaf73b0d8ae4c57f8711f637497376052e3ed419c7. 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/QZNWP2450705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579abdd189c98dd6a71fab339f538c8299140555999213894e671c2e91134a2e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:39:33Z), 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/QZNWP2450707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373269302f1f9fac75e80c8d33aa498a0c2b77f2355958c79405ce0b5dc71c83. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/QZNWP2450708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79349b3040d83595661986db7a6566928469e984764cea63fe89dce4cc2c88e5. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/QZNWP2450709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408e426a19d99f4df5753b8174a61879603250385310dc2f32aaf98f6e9a7d88. 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/QZNWP2450710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a1b812af7f53f7191ca5484526aa04d670585b3df1ef7598facb35bd6bc269. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZNWP2450711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429e23a77aa24285dc7e7c56cfb6032d174dd26cb5ee3d580f5a8b8d8e7d908e. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZNWP2450712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06508c12c8b62ead133a6efa9e7f21b81d0cb8b4b3f8d2694e31b1e6a5acc54e. 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/QZNWP2450713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d953fb808346c223e66e974ef6074c0f103b7373d58d32183499ac50900de6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:38Z), 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/QZNWP2450714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ad5846d709335bd533fdbe3d31c3ec74874640ba23b468eafec4cbde19549. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWP2450715.