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 0xacb3385aef2f46c2b95c01b8cd1d9742bd34d78cf11ba59f585f32cb83d85e1b. 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/4f054dbf-49f6-4556-9c8a-cb7ebc828b9c.json and https://artists.proofprofile.net/proofs/artist/4f054dbf-49f6-4556-9c8a-cb7ebc828b9c.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 0xf3876eebac364deb8db6ed727c8bb25ba818e0e2e5ecb400506f1c9c079c39cd. 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/GBEWA2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5459b698c84bd710aa36ebfda25474a3e1506e77a003688d19e50d0e898be7f8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBEWA2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90e4e6a09b686ab68836526280c9151f09517fbfc8875d14d28777e80725b6. 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/GBEWA2102881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12bec9566d515fd535c605c345c0b7d68b3b94607b9fcf26ac9ae9c543cc67. 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/GBEWA2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3876eebac364deb8db6ed727c8bb25ba818e0e2e5ecb400506f1c9c079c39cd. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBEWA2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e6b602f10d86fd1822eee307a94328410c4fe42940832b21f2faf150fc3bc7. 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/GBEWA2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90e4e6a09b686ab68836526280c9151f09517fbfc8875d14d28777e80725b6. 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/GBEWA2102881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90e4e6a09b686ab68836526280c9151f09517fbfc8875d14d28777e80725b6. 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/GBEWA2102881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948836a0e995b546b5f92af0fef63c52b0387be807174e165f503c5d72e2453. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBEWA2102886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e202bb45e649b954396a919872f08f89ffcc3bc83011c2ee3c04082f76ac73. 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/GBKQU2411673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea346050198ce6a61c1b90411e173f71a3cd90b0d793b01c9f7164e04614827. 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/NLF712400049.
ASOT 1155 - A State of Trance Episode 1155 [Including Live at Tomorrowland Belgium 2017 (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01677f5b6e90c7dad276e5fa5e4dc4c4c2b66ea21e3f3decd62e2528bc3d09cf. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLF712400290.
A State of Trance Radio Top 50 - 2024, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea346050198ce6a61c1b90411e173f71a3cd90b0d793b01c9f7164e04614827. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLF712400049.
ASOT 1156 - A State of Trance Episode 1156 [Including Live at Tomorrowland Belgium 2018 (Highlights) [A State Of Trance Stage]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d4151f39e3f3bb5814b7b2592153323cbac87fc9f61905fc49e95771b1879a. 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/NLF712400381.