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 0x155b73d5893fc8cde1a69f9bf0afc81ea45c876623908b980321e1d770ac4321. 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/2615380a-d80f-4029-8146-0af6c99584ad.json and https://artists.proofprofile.net/proofs/artist/2615380a-d80f-4029-8146-0af6c99584ad.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 0x185908f0c00d859980430667afe588d820b7001e7b54b5bf7281847f1b3d197a. 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/CH7811931206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771b0658ebd216ca3ee6a58c4c91eae81cfa915c44f37cebf3b36ceea590ab56. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:02:14Z), 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/CH7811934072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ebe2241ecdde3cf77e80267c4b7fcfc61cd00b1866e1097ab954649387bd9a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/CH7812049748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e27603a064edba8a23232034c4fb7ffb4fb83da7b7df4f1746f2fa8db8997. 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/CH7812056942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e276cf0c35afeedc01fe8a3162b88958d887017de1a0f05a2b173f90f5e75e1. 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/CH7812059630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6927cc326092b69d85b4d9ec344e9286c7d5cfc830330ab367abf7d9dad305c2. 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/CH7812192423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f1b6d70948191fb5a8637f899e6fad1e7f10ade3e3f3a2fe1e8e053e0671a. 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/CH7812406765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d750ad0806afad377309feb541cdfed3c279d6f8b65db338ed25c7bcccb1b22. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CH7812194915.
Beirut By Night (Marco Navarro & TonuzZ Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b765d5f5ae1115440679ee0d9b3bebd55a3df0d0287304d8246cc887677a6a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:23Z), 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/CH7812344777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb2c85eb7058fc920cf3e8a2e85f60bbd23066d85b7a9e99cd70bbf87de04c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH7812351065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f595d38a08c23a91796341cbc732e513e5daa83727b371878270caefde16fb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CHUM72300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63193e69e465d8a52294ccf07155bb020fbdf9fa109ee29f16991685dbd44d46. 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/CH7812410747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43316cb5d11fb3997ab0653c2aff399d34a9c265c58e4c88b51c93632709db13. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH7812417148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251238d8d8bb329f6840aa6d75e6ad06d3b7858891c2e8c5fbbb0377425e5b2f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:46Z), 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/CH7812531466.