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 0xcfd7632b9db2e591663a62d199d588d843891f7bc83696d6342de189203fd164. 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/4505ea45-cf14-4514-b1b0-05e7cfbc1734.json and https://artists.proofprofile.net/proofs/artist/4505ea45-cf14-4514-b1b0-05e7cfbc1734.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 0xdb073d55b987e220031143a54a174c45032ec2aa19bc29f59286678c146918e9. 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/NLD682101034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4864366478912473f322bb70a7f902719a4e3e2e01689c28e4ec9224bb293f1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NLD682200628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b8c59691d4aaeb72171ab3b69d94397e43750dfdf43bad712fa1537a67d0c2. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/NLD682300389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95163f596a053a2716a3a975db874b0dad7ee050a7801a10204817710dea3313. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/NLD682301624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd49ae81c6e4cc168bce66929c6d5d72907147c0fe0503c372f3b7e72f68a5af. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NLD682400324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0a1b4b3a6d22ecfee3dce69a8540109bff365bdc7cfb9c45e13b427a0d4964. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/NLD682401649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2e4b36b5f38dd8895d31d4e6fa3579a204c5b2587a54035a8e4e57b03fa828. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/NLD682401654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d35a8a1a05927455f55e4cd6772b6bafecf58ef4ca9e9b727564f65968b2a7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLD682403028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f7abc45b6fa85f3fb10cc2f3140971f95d551e7de83dff399fa0e4f431f350. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/NLD682500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae97bb5f514ab725fa972cd61d8e6d3ec7844ebfcb56fccac7764bf30b83add. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NLD682500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28b06ecf803af8fec6546f24542b8d0881f60f76c6c79ffea21858faf21d4e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NLD682501069.
A State of Trance Radio Top 50 - 2023, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb246d7c162846ebb831ccdf089a64ea9144173d58c8dd7214b401f63a9756e35. 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/NLF712306045.
A State Of Trance, Ibiza 2022 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753c8bf11ff1fa33d2a2bf927324ac9a76abaad70498a87272a4015c12afb564. 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/NLF712206104.
FSOE 863 - Future Sound Of Egypt Episode 863
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f6f7fd7ee168fe83ea2c0040d40c231a779b1d8e9da6919664a04530387c0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UKRMQ2400766.
Under Your Ocean (ASOT 1208) [Tune Of The Week]
ASOT 1208 - A State of Trance Episode 1208 [Including Live at Ultra Europe 2019 (Highlights)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d41b04065945714a63cc16d451aebc511e5206ca7200e6e8f731e481b37cf. 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/NLF712500418.