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 0x748e6133d1d092e442f30eb58565552a749e6f183a212d67cde0f2ea0492962e. 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/4212838e-c985-41c0-b759-6dcb67bff727.json and https://artists.proofprofile.net/proofs/artist/4212838e-c985-41c0-b759-6dcb67bff727.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 0x9717cb41634668e3d7d40016d8f1e29b0b4548958e85c039387c60e80cf67bbb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARJA05210170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f7fd4fdb4a853010f16853d1bafa528a2e2d6c14e6c1dc86640b0a57feb1d5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARJA02210171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a55bb0d5d958b44d9daa5f34f3d624d87a30b0af47cc025fdfb2d2bd7793c2b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:06:24Z), 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/ARJA05210173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32107eb29580ee94e581827f97d8f9f76317250047cf56658f2661819b9eb7dd. 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/ARJA05210175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950c0a17d2df7a3fa16d211e5e7db126f1d25da64a84dfadadaf7362153f682. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ARJA05210212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23773f82f074d31752bff179c7779b0857b98ea153a86f529bc70556b683d8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARJA05210214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffddbb169be8036f8bfda4023157aec3b09bbaecfc3605cbe578dc066b48cb53. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:42Z), 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/ARJA05210223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53340eb7c5e40b1199516708efc5314d91fb520c67f0162dd0b846d12c590e8f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARJA05210219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f59f573cf7522dec40c4bd80392c8f11e0d561fb0bdcdc1ab6df9c90ba80011. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARJA02210150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec02ded4a30e476c83fee4b58d6077818a6d14dc10924affb486bf001bcb12b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARJA05210151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99204438bba5f37ddaaebd9b37e609af87ea21227f3505a89b0376b0c13ec84a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ARJA05210152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2236194a2b749974061edcf662f55bfdeb5d56b787f4babc3c9ae55421c480. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:28:38Z), 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/ARJA05210161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b944c3b16104e24d91f9ab655e54d653fd4cd715d628e9508c2413dad9c0d74. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARJA05210162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d55a407941a38f11718370511686123983ae29db36bcca97061e58a3ae7e3a. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ARJA05231306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c175d496631f6add2095f3f1790d6c88c928e15dcb7820a1fd76eb99f15ecc5. 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/ARJA05231006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6c4a4e87f9300932a1e94f4e8e6cfc26288b85e0de960601f5a596be4b81b6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ARJA05231206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e3ed42465b812e8e8351e34ffc12de775eb2f144a340972ed88ed87a685b5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARJA05231506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f23f50c31100d7db087abfcd5f3913bfab56e9c10a0c61c636a69baeebae0b6. 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/ARJA05231106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b44dc877fa447604e8d979709b9f79e8cdf5fafbed5cf6d667a50e7dc3496. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ARJA05231706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c14f048fcf087a5685c061e9c2363394db3e129230ff33247767197dab9eaa. 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/ARJA05236106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc322be95d7f6a34f240693ca63dd7075745d5cd986cf9e275de63d1554be0b5. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/ARJA05241107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbfcf2c38a1590227ed0e8d419e09e0a366e8e3cdf40cf2493968ae03b4597e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:20:21Z), 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/ARJA05241207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae9168dfbfae033c783b6f4cc748edd86dd24e019d027b41557f717eeb0b21. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ARJA05241307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba46b39d9b30d2c0f98a823848d0fbcf3d8e52dbb30151e0475ddc052b386ee. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:50Z), 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/ARJA05241707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d4c55f40beea94447b37f3c31419d3ff7012ae03a66bef9bfe54672b47326a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARJA05241807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f8d47ef03dc8f8ff90eaaaa3a16d2bf699eed1a5d634382c56d0ac48718c10. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ARJA05242007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc231ee10b72a75eb7fdf89dfa90b36009e2fd29a57361d59036f6aa46d846cc5. 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/ARJA05241012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baa03c1bbf1173110c628ed1bb39fa395fd1b04607ccc2a1d65737324d2f785. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ARJA05241112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a3e6c30d19136598ea237ddfe5688a22767251be2b5b8a54320e2c3cc6a26e. 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/ARJA05251701.