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 0x0bc2f7d8a560300e3a191496044de8e001b837f648f7952dc27c7587cdb1088c. 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/ff7e2760-bb77-4531-945e-26433462bf65.json and https://artists.proofprofile.net/proofs/artist/ff7e2760-bb77-4531-945e-26433462bf65.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 0x20c37c1dcb7491331d4a43b0a991a0dcc987ee1731739ef8ac978964afc556e4. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/US83Z2327672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8ec55502502860036f3eef257d5b80574f4bbeab435714831c0aebbc4d2bb2. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/NLZ542301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7bf009d651f6db9b92bed8778be4112b4a26d0a6b0ffdb594c067378328409. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/US83Z2355274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904774523af7e23c439b386be62e4a0eef1439bf365c69373337d7f6f7bf4b2. 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/US83Z2355273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce46a26eb71db46afcc575f78de2fbb0f9818990272318130d4cb01f7dddd7d8. 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/US83Z2355272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa956316a7f792a722b0aeedea6a05d1823461c7280b07ed7daf7ea56e6dd4f96. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US83Z2469738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd682f9fbbbeb062aa60d72b450ff34023c913c5470232e93ba03a167fa813a8b. 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/US83Z2469737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d397b691b7dadfbf8a3614575d924c0d1944ae709453a90482b1a7a3906d80. 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/US83Z2477997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf1d82781bc422609535bfb1531edb625bf906ea69f7a61e78cc62d756f652. 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/US83Z2477998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894c337eed2fef66da25bce9138f19638d9f4e58095ae26c964fb7eb3a3e3276. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLZ542400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c1da604a189d1dd27b537f623b18af1af48b4be5558de5d2c6cff25f85e8e2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/NLZ542400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b4ac69a36b6dc14b01f6a26e03a8097c8c02634935bf56828bea914f906a0. 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/US83Z2484343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5fd75e9ef5727f3588b3e988072c7997f363c7a9c272d645c6712311123772. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLZ542400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe3fc3042519d853faf483c1c3d10360ad51c4b211b4d87db7f39e49648c86a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/NLZ542500390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddad638eec2cc7b34b8a602e52adc57245ce7f0f1c3ae45fd78488cca2e944b. 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/GBEWA2101375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0390ca9961ce43dd10754270fd5704b8ad22f35e9bd70a35457276b51d870b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBEWA2106706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca3a2ce3dba8a2e9d7d9d8313c5c0799bc3021c626f1e21952da72cebda70e. 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/GBEWA1910565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40ab8bb0dbe6a1b9249e8bd80b69b6a6708ef31b01c920cfd7a7415b36baa68. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GBEWA1910572.
A State Of Trance Year Mix 2019 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75865b38b8a44604e24207eb567f514baa4ba98d40440a4bbe747e2347d3718b. 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/NLF711912897.
A State Of Trance 2019 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04478c6dff8fe90ad7c610b6cf367d26ee0f9a5a9397fc40258e3a43228ad80c. 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/NLF711902849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da3c7b1f65135077da9a7d900f07288477189011cc07de6e410cf2d385d757. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLF711903204.
A State Of Trance Year Mix 2019 (Selected by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da3c7b1f65135077da9a7d900f07288477189011cc07de6e410cf2d385d757. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLF711903204.
ASOT 1015 - A State Of Trance Episode 1015 (Including A State Of Trance Showcase - Mix 023: Craig Connelly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47f871fd8bda26b7e1f4924d1f97d13336ce07f2ba921605a58ac844cc9ea66. 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/NLF712104465.
A State Of Trance, Ibiza 2020 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1809d75340bbadf9fc93a971f1a3efc51335b0e348ea80eb8e38975986b53a1. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/NLF712008715.
ASOT 1157 - A State of Trance Episode 1157 [Including Live at Ultra Music Festival Miami 2019 (A State Of Trance Stage) [Highlights]]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25873008b05afefa1a42aa79eb1f9304e3e749d4daf7b721fa055d880fa1eb05. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLF711903729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c8430defc984c2781d494f5f2b722b2f24498a09b325f05cce062ad55104d. 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/GBEWA2204058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d397b691b7dadfbf8a3614575d924c0d1944ae709453a90482b1a7a3906d80. 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/US83Z2477997.