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 0x20daa2cf0da2b95d533e906d05dbb6968447b6af87d73bd47085fbcff3a229ba. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/351033f3-9727-450a-8d56-b713321fa0c5.json and https://artists.proofprofile.net/proofs/artist/351033f3-9727-450a-8d56-b713321fa0c5.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 0xb3dd1457f9705034e560434107378efcdf48ce7c2c5bcc01742bd3c9b8c395b7. 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/NLF711404375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96acf2591c7991ce2a76244d1ebca0ba06d991060f53918162819e6530728f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLF711402340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4772e20f761acbee822765c66ea6edaa7026d3e83fbcb839480ccad44ff1f9. 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/NLF711501158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfdf517534baff36ffd45dd504c3e85c4ddcddc53609422fb3b6b719b76005c. 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/NLF711503335.
Armada Deep House Selection, Vol. 9 (The Finest Deep House Tunes)
I Wish U Would - Martijn Ten Velden's Club Mix Revisited
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4fb0ba082fd1225b354f2594ac7c83591044e5a71f7e57118b775357d57ee9. 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/NLF711506925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd640a68b3d96b555277afb403e12f9922d2338bbd3f16e856b002febcf228faf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLF711506927.
Don't You Worry Child - Charming Horses Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4e0ee0208b174f9c481d1f52fdbecfd038795027804d325794e10ab4df55ac. 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/DEBL31502642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3203b41281704fbae0525b3b12b80d2f9740938a171868569815848407724920. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLF711505331.
Armada Deep House Selection, Vol. 9 (The Finest Deep House Tunes) [Extended Versions]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64f7c35f75263d0bfea112b205a151e39f5f694f9965607ea8e5700f7271c5c. 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/DEU670600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0c266232eefbee207cb2254233256fd055f266eedc70e801b19aa0f69df21. 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/RUAGT2403222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1adefd60e67533ab61cab1c455838e1e008115ee43e18e7543e5d89034080ea. 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/GBKCF1500422.
Resurrection - Axwell's Recut Club Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce91d4a86d57ad328b1ec24f74e4b69998981c80741ef60938fcec734c82804. 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/GBKCF1100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4736d944572b6881cc6ed625e96fa118a26782092f84967ffc1dfd17580524e1. 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/NLS241502561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfbfdf00ecf869ac40f913e361a8586f9373935d37eaf74fcd02bdd5d5b42b7. 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/NLF711701244.
Sokin (ANR143) **Spotlight: Blast From The Past**
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37edafafa82a260e1eef140b89d5588a551b48ef65d14b19e97fb25b3064ff4. 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/NLF711701260.
Best of WePLAY 2016 (compiled by Basti M)