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 0xb59cda33f884754b245ca1acc024b362edd23b8c12a1fb234f53da482614d0d9. 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/31ea91ad-6e1a-4417-b306-2b3cd7197090.json and https://artists.proofprofile.net/proofs/artist/31ea91ad-6e1a-4417-b306-2b3cd7197090.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 0x72071ca926a67e6b4f4aedda93f6c55e72842d63308e904223dbc9ffa79017b9. 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/SEYQH2200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfedae3c8bf7f96b5f84dfe605f28dca0f78e3b0c2a0f47723fb7028344eac. 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/SEYQH2200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eaf09ba536697723e2267e4f82c6b87a20bcf24424ea80598d0775293dad30. 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/SEYQH2200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f85e9680569c670c63be45f259219252e3df10c7ae07ece328df1b7252439. 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/SEYQH2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c958a8e1e47e976c6e5168816d8d104284a482eaf2b22b5558b10b8b79685c7. 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/SEYQH2200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ce5c69d581faf4869f223d43acc6990afe926cd610fb01762cd1bd9b65fd5. 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/SEYQH2200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7c9d2865ab488bab46fc119c79a507e1a5337aab39bf1512409dc695fe8ff4. 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/SEYQH2200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30c5dad38f06984cae9230961c03c61432973ebb8a5b587a2085aa3022d860. 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/SEYQH2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec536145aa60353dfc4d5317494903f98aa0296a2344a3388349fc735a283218. 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/SEYQH2200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3514b79713bde24b7bfc838f51ce70c4b6f37afd865d6170df7bf41fd5f4f7d. 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/SEYQH2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abdda3ad2e4000d5e2f8a470bf32bc3b03ea06f6ea11090362b26d9d8647f5a. 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/SE4RQ1900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8feb8ea1eb4d947b1bb94feaa51e3882949b1ed3229fd65874bd4161dfb7af1. 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/SE4RQ1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e6d6e9ba11f4e623ab0edd0eab66aeb7ab98733430815f0884ceae4f5706f. 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/SE4RQ1900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abd343358dfbf586b2c21f017f19d16baeec1c06b1e25530bc2fc60168c2220. 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/SE4RQ1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929b80130f26b28bcee4022516de62ead77c7eaee46cca90a9409c07db4387b3. 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/SE4RQ1900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb476da002fd1142ee90f57cb8ec99f8a8e3eac98bf5cd63f9403816f644312b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE4RQ1900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a73419c077221dc61bcaa48d3c9c53ae687ac48b9d29115055cabe51e4550. 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/SE4RQ1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f30c5dad38f06984cae9230961c03c61432973ebb8a5b587a2085aa3022d860. 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/SEYQH2200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6f85e9680569c670c63be45f259219252e3df10c7ae07ece328df1b7252439. 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/SEYQH2200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c958a8e1e47e976c6e5168816d8d104284a482eaf2b22b5558b10b8b79685c7. 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/SEYQH2200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eaf09ba536697723e2267e4f82c6b87a20bcf24424ea80598d0775293dad30. 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/SEYQH2200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abdda3ad2e4000d5e2f8a470bf32bc3b03ea06f6ea11090362b26d9d8647f5a. 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/SE4RQ1900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a73419c077221dc61bcaa48d3c9c53ae687ac48b9d29115055cabe51e4550. 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/SE4RQ1900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8feb8ea1eb4d947b1bb94feaa51e3882949b1ed3229fd65874bd4161dfb7af1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE4RQ1700301.