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 0x7bf3713c7adc8645aad6fe47ad70036a8ba47fed397628617f20df259d4a907c. 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/732d30f1-9043-40f5-9a61-148cd1d5660e.json and https://artists.proofprofile.net/proofs/artist/732d30f1-9043-40f5-9a61-148cd1d5660e.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 0xf64dccc7e2496618e27540afcd3a65e81037eb5d12b1298eab38d8a8a7c0f36c. 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/ZBFPN2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca09bb15bd33e13aa2f9022d3f86fd2ea9512efe141ee3727ce3924d649c00b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b3ea538b2f1dbbd48f5d8c439933255ceae0d2ead8a572cfed223e5b263826. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11843b797da2bb7a02b1e77494eced34215b52578a45f3b4190dad1f34b8142. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410079.
New Milano (feat. Okmalumkoolkat & Cassper Nyovest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc9a803a6274d1a35af8fcccde3841d961965988464f735307041147b632e1a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410080.
International Charmer Boys (feat. WNDRSZN & Nasty C)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6f2ba186690f51c5d892f3b5a1ce71adb3cc05f895b5d3c62a2241d7861025. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4773563e2deaa94673894b230b7c4b62c6b1a9d4301795f724f4cf33ba9e4dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540a63e868688b2b71b25caf4831e81b1c791325c27209585f1ab21d8642f4b7. 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/USSM12410083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea13b0cc23c3269fa59f7f94eade1e79e85b6280777ae87af65ca7f68676cf6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acb4395e1b11d30ec6fe4219fa80c414edc09cfce0c1a0cd7acf91304ba97a0. 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/USSM12410085.
Ke Ho Lorile (feat. Lia Butler & WNDRSZN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbea4f040a475ee891f3e4f5524c7c47b9cb06d1140b5ecdc3d8db167f4400a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410086.
Speak Love (feat. WNDRSZN & Marcus Harvey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d633224bef018f89a8372fb02a904025f81524175e1af23614a02b71aba711. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300eae76b5c5c5b8d921777f05ec82dfa8a36b50115dc7f3420acfd54363ec11. 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/USSM12410088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cde824ffa5acc55e7808850e86cb675273debc17c468026b105dc66ce2da8a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055b925a14cf19970acd0abb365b3682d3fcb1babbe2fce3f3559ad9709cb1f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ccde52217fed6c87b33f12f867dc8bd69c6b1a129da111d872a707ebb8b94. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410091.
Damier Dreams (feat. Thato Saul & WNDRSZN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa572184da9b03b11c534e75cd93df19ba4024bb3b208dff5d295654a4db48521. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced4473ac523fca5fb844289e07809b6240f4f0279ff85ca55b9473acfc594c7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba098bdbf9c47061f37a3a66c9955d9ee1da2f6c77a3839c08f74fe2623b81. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM12410094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fea89d373e35f8eff2197217996f17bb7672082628fcb3fd6688d73b24f338b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM12410095.