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 0xc1d4b9180bca58bf2390e54c72aa60175d0b366508cd6bfbdbc8177c160e8f54. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca5a0f16-a64a-44b6-91f2-93c0e92b4951.json and https://artists.proofprofile.net/proofs/artist/ca5a0f16-a64a-44b6-91f2-93c0e92b4951.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 0x5508556af3f6bd7c4b21a14e56133e8b494cb0ce70333fdbc25750c18efbb8e1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GB8KE1101631.
UK Jungle Records Presents: UK Jungle Volume 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bf7daebddb1bcec8249a1f55c46af9f3640e1737ff04311a2233dd3d9688bf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCK41051135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af8eddb3d0e77db88d3d9e42b7ec13ce5ddee5429d9c74d7ccc9f9743a9c85. 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/NLCK41051136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c543ad46b6dbcdc7d1cc73ea19dd745bbe291ecc2cf8590dc0907f469a7b8a. 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/NLCK41051137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533d8a09e3368d9913667ac4cf34df3530060c942b0d698a7ef5771cf320a176. 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/NLCK41051139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5fc8242df36f40f7de64a3c0c55b3bd7ce944b05c5e6809c5c337c5edf280d. 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/NLCK41051140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d620c7696979485255235646c01795c576e7880e195265206f57fe75ad420. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLCK41051141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb4f9028d7ff141c5aa694d600501b8783cc94bc4e4d7964ae08917e9c400ae. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLCK41051142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c64a96942219a0bfaf7f9e5a78ca8067dee80d60d9048f9fc170537a2937d8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLCK41051143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc3007cde4630378d2f25bc8b12b3ffcc1eed4aeb73f85dac40cd6b39f30a7f. 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/NLCK41051145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd55ae0c1f27784aeecdac5415901294763a4cc71e5e8254eaaa35d72677eadc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6540832707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b389b744de06169db90218a4c116c0b01224be8b4f3c3238f2bd04f607187. 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/CH6540832709.
UK Jungle Records Presents: UK Jungle 001
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798044f3083d4a249f4cdfd201b79247b03b6c4dba68db892ba6448f9dd4e933. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/NLCK41049180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a1be480fc36dc831780888f024287200872e973b93922775da1cfc4660938b. 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/NLCK41049181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c724790f1838f42833623220b3bc19b3e675bbb330719d57c43b943af6d6f65. 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/NLCK41049182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ede6c341b14dbf37be08d8cab0404616f13c1eb69271d7433503ad540df2b9. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/NLCK41049183.