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 0xe63b8b834eb11279829a584b22c12adfeeb46428ee2d0bd3752931eae79aa42b. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2c3b572-4701-4ada-8a33-522f09268746.json and https://artists.proofprofile.net/proofs/artist/b2c3b572-4701-4ada-8a33-522f09268746.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In meinem wilden Herzen - Das Rilke Projekt
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 0xba2762dba6ac99b3aaf5252671fbe7b33b5465d50c532af77d3882b9acb1aa84. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEE471000462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9546e6012200fd06b9c23062a3f6549a3a2b067344430f2d10d77b2cd45388b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEE471000463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5fea5e698ca264fee2de45320764f8731af9cd6957a933b964bb7c2e61442. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEE471000456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a49a4038eff65e431bc6f8c499b53d37f559143cd4108f3e0db10fc28f25914. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEE471000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbafc19a67653154458dd804398c24ee803612aa94d1a0b67dd544b69ab5ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEE471000458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2514266b8ba57612d961b62ab8b32e12092a80f46df1c81404f311fc9eaee80. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEE471000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e7a505611854a420cca4c124b4e76845fa0d5aba08122909ee5515e84b88e5. 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/DEE471000455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ca874a5bde1ec838818d00917ad44811ea20bbe67a25c0df1e7fd781186553. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEGA71400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202873dd1e67b62b2d3d02686db472f475bee97a7472669b4ba8380f74555383. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEGA71400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c15e4809d947a263529a21d1c66dec42b9d4ac9d5ae92a8306cd52a34dc333e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEGA71400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5642ce368249b70e1f518dd427d84bea1b0849d8e343a48adb5c0c624f2bdca. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USIM29700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157b757cb1f3779f05226ccd2e3a981825effa163c363c985b068cf1da7a1d8d. 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/USWH18701031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf63ae72147e02a8eccc5598519be1d812997f94e931865451d32b1c3c58aa19. 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/USWH18701142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb62941f0122d0a242702637b9701d1b4d814cb361ad628174a3ad5491db9650. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USWH19001116.
A Quiet Revolution: 30 Years Of Windham Hill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2c86f6c226ef10356453332125c2da298dc3367a71dc216e57f151e386e647. 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/USWH18701013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a70ee889491357fdef4b4461dea528a47f0b1034447cf4d86bcd3a088b4263. 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/USWH19301183.
The Romantics: Romantic Music of the 19th Century
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecd0d44f321186a263066400e5799b08e704a84fb5dc7a20f5245263bb51bf6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USWH19501091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb62941f0122d0a242702637b9701d1b4d814cb361ad628174a3ad5491db9650. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USWH19001116.