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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391ef6e5c84ca742d811f6151a17d58bd9477b280e51d1cc2c1e625c3db8b875. 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/cacbf3b1-7522-4dbe-bf20-fd3077c297ea.json and https://artists.proofprofile.net/proofs/artist/cacbf3b1-7522-4dbe-bf20-fd3077c297ea.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102c570f235b2f8962e24c93a61f420fe106df5879a8c111fd173c861ef0bce. 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/USKVE0810035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80094272efaf013924337b19a3ed2f85d22cec7cd66e0b60923985892ac8813. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/USKVE0810036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a31c75e46ee3413d1206aa0c9921d8c7d7c530c2bf5c60c38b0fc5ddaedb44. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USKVE0810037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76390a874d0fc17d72a9ec24f35e69e7b8c76c7efd5f204ae2a503fbc68a05a4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USKVE0810038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba7dc47016783a0870c4d311b1f532620456ce043b839416d39c1ea9887ed84. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USKVE0810040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761978d22b74454963540f47df5a39b4d086381960816245672094050b2a3449. 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/USKVE0810043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c571b1cc6c3f67ae8838aa0cbc3b00ec4e04c27ca8a5eac948c109f90067d3. 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/USKVE0810045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa601f2de0dcc85a4298e4fa42c993c69f3ea700cdc3874a2794bf8c5de78c251. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USLN70911051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea5e91195ea4b51f89cba2aa2fa6e7861d765bba5e7b506f57a128e0271a7c0. 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/USLN71201299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693b19bcfb7162fee26cf5d72f51d325b68d9bb8f0baba11bc6d631b640f229b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GB3AD2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8107db4c9c11454acd362342af9c85ef4426bfd61fd8d9c973eea175a1c09bb. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USUYG1005560.
Trouble in the Water (feat. Aaron Fresh, Choklate & Laci Kay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf453d3029a6c6ce3592e9b974ccc699c3cfc30fb0ec0e3266ad4acb611dd371e. 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/TCACB1458463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5698819442941a268b59c8d1b169001bdac995e2a18ff7bb57d59718b7d5c85e. 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/US2Q80900032.
Deep Rooted (Compiled & Mixed by The Realm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e373edae9628fac44fa7e33f4f35922921e5951bf9252245ce3d1d7c47a04a7. 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/GB7GV1490001.