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 0xde7e971c137da843d0f533aab362230221024b5b4d9644a28e4c87affd56240e. 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/98917b78-f207-4395-9638-6c28f1b11eaa.json and https://artists.proofprofile.net/proofs/artist/98917b78-f207-4395-9638-6c28f1b11eaa.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 0x786fec33ad7e353e522fe634ebb5d6e8485733cfac3bed3bb175037340590e5d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA560646788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274ad442772c51e6cca8e01835ab790204984d2265a23a317b035b3d8a2f919c. 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/GBEBR0700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728e282391f1f34cdc5c3f6b73e397b149e4ff7328df4700d73ea69fdbdeaf29. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEBS0800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51644e46ec95c4565a553f0ff38a4b4e4384a6d502ed5e8aeaab5a42dd0e60. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEBS0800480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b24b8602ba7cb762a8a8a4d908908b60eb6802f14fc2853672e78b3926577d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEBS0800483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6754fb3c425cbfafd93270d88450474e294f2e6daa70eaabcb01d61f64072531. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEBS0800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cbfa821607eaecde0b5edb4a31d029e75e30c76983d46691240dc0da6fbb6e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEBS0800491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ce749d174248d2bc08f21fbfd56d168b220365864b13bdda2abb0a4ea398b1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBEBS0800492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa268ef4233f7c820c75deca3430dadecbcd6e3ce985c3de3efbae8337d8d1821. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBEBS0800493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c307070f6764694d68b3f3db4e427cf3b3e2a8f0bacecf4f51dead141e7215. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEBS0800494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5918d65922d13581f38b9f256f453204aecdc054a270d75eef86648752b37e8f. 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/GBEBR1100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3527cde70659355084d1162e63e4676e8aa43e051f9d406fc1b86c90fdca540. 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/GBEBR1400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf644c893e6349b0ac090f17bfe115dbe9f52b39f97810e9fc91416cbbbf26260. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEBR1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e378fc50fa2602b151674dca5f10e133566466b13501b5aa08e5b4a2351cc09. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEBR1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945c226ad5bce421c9061ca4d9139002f2d900711d0675c78593f35d5b15469. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEBR1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3527cde70659355084d1162e63e4676e8aa43e051f9d406fc1b86c90fdca540. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEBR1400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1a8e385cbd24f09f6e71210e836000df225a79a3afb4dcdd70cea809b45ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEBR1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0b0b271eeba20b35848b2eb443d329a1b9474d2195c255fcf47a491a71c5ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEBR1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd4bb331fbfc83971759d023d5a5fd88eef6474e98dc39868cd9558f693700. 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/GBEBR2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd07bc4fb04fd615612903f9011b38bded420792a4a2bbcf25fd15bed4947a42. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR26V2018559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111e4c3c6b6ce08841f9d3fdc89effee99f74e5fb1903a8f07dc5d40057a02ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBEBR1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f6ba85aac01dd35a71471baa8b81aac913aca0cc15127bfc976987efc1c2c5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBEBR1400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c21e8986451c745428b11d030b14e887d16c1c5171edcccc21e72d03944ff11. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEBR1400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31758a4d7a9af1387847de0c536d95558ca2cbfbe4dea9eb13e792b2268b09c1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBEBS0400055.