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 0xa036a0375ceb22758b8bdaad9e5f0be1e42e10af0fca60a624d7b16cdc475753. 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/2cde92c9-6c6c-4f10-981f-dc8fd20d5ab2.json and https://artists.proofprofile.net/proofs/artist/2cde92c9-6c6c-4f10-981f-dc8fd20d5ab2.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 0xe8f8edd7b7c295ceb4c28b7074c9e370f9487d8d6d209b0a921cb4a0be9d9b61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLF711313847.
A State of Trance 650 - New Horizons (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657fe9b60556d304a897ae57fdd3a269bfee28e5071ad0f418a8b5c0fe47aa4. 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/GBHCD1001012.
Jump The Next Train - Kyau vs Albert Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87615c456d1af74337f6f886b44c08ee4f6a012b77f2faed74047a7cfde7df5e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLKN0500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a9a3b77348ea5692d9c4b438532640bd375e11d0ab9834fa13a9e4d25f54e. 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/GBLKN1090009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec5f227b78888f9ef400bca85550adc1b430e4ed800c6dd23514d5b9c485191. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBLKN0500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657fe9b60556d304a897ae57fdd3a269bfee28e5071ad0f418a8b5c0fe47aa4. 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/GBHCD1001012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4bcb39111660c9c1b60d23a05af673dcfba127a90b0ea2d03c775478dc43f7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLKN0500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e138a2e64b80e945a27a4971163922d712366b166b343cb012c84c4e2da1e0. 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/GBLKN0500052.
A State Of Trance Classics, Vol. 8 (The Full Unmixed Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc706e5db2bfac6766a6176575a1007774c2687cd3dffc696988f2477d57b65e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLKN0500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0b245ddf7ea95d608de7b8e6abc95d2560c4784f7a9602b48cb3c5a3b0fa89. 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/NLE710582951.
Seven Cities - Solarstone's Atlantis Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4aef215d3d8db06eb73f57d8ede1b0f01224eefa91414744cbdec1e8658c0b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBBCR9906115.
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