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 0x16567f2e016f15c6a962250b86b7f0532befa4bd1c9944fd1be19064081964a2. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ced568d-2bad-4598-bfbf-175510b448f6.json and https://artists.proofprofile.net/proofs/artist/0ced568d-2bad-4598-bfbf-175510b448f6.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 0xa3fd59de6facd50bc954a2b3caf1256ba85235b7c5c4357c5049138c34da8bdb. 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/USLZJ1735133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe51b1b5b38c0d0cb8c4e8695ff4e6c165da02c63b8f7ffc0fc1725bc439d5d. 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/NLCK41051424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12c7b826b33bae47a28ff651836b62747e4d67a41641de68fb5b4bd037b13e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLCK41064605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a42f27bb22b772dc0e671ea0c91eac789deeb65296a5c2f0785658f0920f30. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/NLCK41064606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc0048c17811b0e857dab27941a296399a6eb12eb50ca88819324d5d755092. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLCK41064607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01faa8cc19c331445aaa47ee00a5639840acbbaec422be377cdc2173131b32a9. 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/NLCK41064615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b495a433a385a965058574890afe32f9374087d32108d1126a1f00a3c87eca. 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/NLCK41064616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16faad4dcaae67be00cc25653d314c878ec7804f898c0021f84b4f352bed2bc9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLCK41064619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e45c21a7cb2d87b1188deb5cc9541eb38faacc12f4a2ed520038f46e916af. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/NLCK41064620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ba4f06f98f415195c3d8a246a70600b963f180e1a3110e8d853eaf9aa7afe0. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLCK41064621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead3e5f903e6e1029a0d8fa7a38a0a0876a89afac9b5aa6444f6778f57f7800a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLCK41064624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85a32cea039efa15ab49b97bf7d76e8d7da77a3348a3583a8a14d65427d83b4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH742409708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ce9ed4e17f45f76fb85f59e95557f63776e5ee6f47f9c3e9305ff776318e22. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH742409710.
Tangled Cables (Kike Pravda & Moteka Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4438eca0203e760fc5be0f4e7fb066ea3c74c2c3ea629d32dfe87092a6b24db. 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/GBUP72100541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45d86c3598efcbccb69ed15f3892cdb180b90cd0bbc545e18393ae5b7799bae. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBKQU1896460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2a945ce1329c50d9b7a4b03b1cc8282e3f2d596278225c79dfc4d71e18d58f. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBKQU1896462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec136d474a00b1c4814f561412eed0a1c6d0ed5a82679d0a639d7948e9bf5e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBUP71800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce139cc487a6ece767f12bbbaf71e89c2b578d2232e842ba59bf347f0a7e51d4. 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/GBKQU1590753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3885e10a42407dcd2ad869af9248b308f01eae18ae84ca4efe75375d69de5fa6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLCK42220002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3731bd1ac43af3126345ad72d4d8feb35b04d7ded5ad334ba08b33424ccc4ba. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLCK42220004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c4aba61803ae4331c6f6e0b6eb4661562d5a91829ca27668cfe617992191a2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NLCK42220017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9566a021edbc5aecb16b392fd84c9908c43a787cc14406cbe8e68967b5efe8a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLCK42220020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8110b4366d4cf6f79ffed945943f71e33995e31f4dab061d2fc0498f6f3cc8fe. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLCK42220021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fe2d095e57ce32ea92398bf3973b640fceac244e26f40530c146e398d83488. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLCK42220029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ca965606963f9a8a141477cc49c56bb9c148f1c18dde8b050565befea34d7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BEN582200518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a7926cc32553fce1e3abfece89e6c07dafdcac2897511b8e7fa0ebae2e94f2. 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/BEN582200519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e890a7f93aa9a3053c7b9fa152c2a457e815b39cdbaaa40e62507bb6bf60d6c. 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/BEN582200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351db46f87d88f1f34c2cd0e9dcf2d55bc2708ea567c3c94b3f078dd5501eaaa. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BEN582200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3f0207bfc80b07507ed7c0e67d24c6425847cce18b48747e1d5fdc6da2f613. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLCK41091243.