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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe4c97962de3020103c90c15d64a9b51f516f91089f13652e855a7225f02fcd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df249e2f-e23c-42e3-963a-bca0a9cf4ff3.json and https://artists.proofprofile.net/proofs/artist/df249e2f-e23c-42e3-963a-bca0a9cf4ff3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e74aea7ea327c5cb27e67417fe2a79a726f7b3ee9166fcc5fe8ad017498569c. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/QZHNC2233370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d092285d4fdbdf228b40c6f2b7bf940161389b88ec6c584dd037352eb38396. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL1AP1989730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10fe12a831c46689ad9b0f6f28b94a6f487320ef3a5b49c3a01d378dafff40e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:26:39Z), 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/NL1AP2023457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e93a26a4d5f835eaf871a6d40e64be847912848b4559bc9cde585c1c6e0e1a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL4NL2012846.
I'll Be Home for Christmas - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eb119847726159c068656494c44c75338cfb33e6d19430e53448cb40b9f246. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL4NL2012847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c8ffe311e9803b5aeea008053ba8a70029f0fd9745d5b94edc260b99e46264. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHN52417902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500bfd905ef3fccdebbf4177491a4504f9b103317bd620ad24e7e052a99b1396. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN52417903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6c4183e3784a31f4f1afc5855fe5342a6e10d3fe0f1724f7e7335cc640fd58. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:09:10Z), 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/QZHN52417904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac63610d733e011b33cb0d6e86f77df7e4909ded2d3e04e727af9ce5e7410b47. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTAX2470586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbf9c5ffe67b50832d548216996f54f4d5054c4e20c661d16c9a889e104c777. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZTAX2470587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea4e0e0004ac06134db9862c0185436d2821cd634af162d3c596231e2fa0386. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAX2470588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2610fdcbbd524b910dcaf64af63f0f9c450f441ad434d0c855d36a789fd95035. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:14:14Z), 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/QZTAX2470589.
Arcadia / Boys Like Flowers (Remixes) [Kam MacKalla Remix]