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 0xe9348aacc765ddedcf0b9db4dc77ac84cb01383b6df141c57a35d283479ef428. 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/2c80b9fc-8d1d-4f3d-8b9b-6b0879087516.json and https://artists.proofprofile.net/proofs/artist/2c80b9fc-8d1d-4f3d-8b9b-6b0879087516.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 0xf8c2b1e167331dba92645159226af98804c99adfb492695b9dda989e49557e88. 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/VNLLT2179167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c635e313efa5129fb6eced05ae26212b1d8acd400069591877c1c6b14ba93. 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/VNLLT2179168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f069e9d7b1d8825ca9e02417ff2ce050de63aca2524f59156b494a12c50a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDBMS2391038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cda2279027d407491099eed67a0ef6203aa0f16e611aa581c8746d2d52c374. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IDBMS2391041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb9016609fcd85202806b85c8b5ed2da33330e0970ad3ac9a2a40202ac76ea. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/IDVKA2590001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a29edabffa518ff28e77a97c8bbae126c6bd527660e58a2895c09600c2d04a8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/IDVKA2590002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa4c2b73e1fea2619f1843141e046480bacb06ebbf08ac0979b2b3a56f0eadc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IDVKA2590004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed41b9acd165de910659194a1ade89b6371e3ef5a88456a103309ee65d2934. 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/IDVKA2590009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a98d24c0bd8f242e9e845d02b63c1a3647531af4a29f5e2f622ce9bb8a72f3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDVKA2590011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d24a28beb20ad5058b512c3e926fe0b5dc51ef4baf88a229955db5ed1441f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDVKA2590026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5c19ad9d559c221916f738a23a7a029b17e47659b2452c31466c860095b67. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/IDVKA2590030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5080ad90c5e54b3462a9b9ec541f80c20752706eb21287b0f71ecf127e4690. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/IDVKA2590045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abc0ec2137d1d8edcb2df9df390cdb9aa579551029d53eb1d04aefed8aff98. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/IDVKA2590047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2077608c813e0a76bca581777d66477f78b177dd75a8f67e7f45c2da7b45ee18. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDVKA2590049.
Dark Aria Arise (Sung Jinwoo) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb385d67d7ef36b0cb05b6b86cd11b0a42148c1871e31263a5d7c5ebf8f07e0bc. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/IDVKA2590050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545efe41621769108652af5c4b93c6676c41ef6089a38ab7e86d074829612261. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDVKA2590051.