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 0x9a0f9af95c7a891af52cd29f48c5e5e3f2193a78771d82b14055d8ea7d336cb3. 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/90a229a8-88df-477e-96fc-571d2fb52ba7.json and https://artists.proofprofile.net/proofs/artist/90a229a8-88df-477e-96fc-571d2fb52ba7.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 0xd61fd7ff27b778e3959135f579a56b88bc42833915f02c9343f62eb917fa6f4f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEE861804286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c558f2c7bec8950b947d421347782bc0903983e19440dd20db585afed11605. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/DEE861804284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894f4d0e1516d968c816fed1f4b906d3fc05c46724c4c0d417e45fc4587fb069. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEE861804283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8dd40d6e3aad257ed3fedf4f39b47704ee0d561509cdf1401cd16886fd13f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEE861804285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a68f771da829df0b7965fe8bc942ec121f0babe0bb6d561acb28696b634d32. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEE861900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad0c3c1fa9cf1871f44670105e616d9de452056333cf7d11bb0b98fc63f0dfd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEE861900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c99da9caf819ae894892562bd503ad80d6498a1207d21fa86886e39952289. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/DEE861900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d837056db7c5d46b71f9d4a6383e39e2e3c8f5022bcff71287675d91a1e5a2b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEE861900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1fb3c8419a3aa5bffbed85756b390878226c6c0bd00c975229afe3b42ed402. 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/DEE861900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda09f550b9c1d2c6fa99caf8a0530d828d2a5d17276a99902ddea40134aa7bcf. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEKF22100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf452b712143547aec40218cafed7481ef88a37a193b823112832140fc3bc4dd2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ322100244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b5c3e0859bb7684711dcd47b4c93402f203edb09b2f4d733020fb5ad239dce. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEQ322100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b3810bf4bc8cb23a2a7b38a4542bcd474cef57806945e7e3d968ea3a0ee8e8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEQ322100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6b018f593e62fd45ad72a8cdd57313c3fcdc0af58b48f3040b7d8ec3012fe3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEQ322100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bcd912b31849fcd857fe410938c2dbc9f401a691de015e5fabf6a28b6e29ec. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEQ322100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5465c2583481f235699fcd7a488a23bca5f62cf10e7315f3156d7dee7a0dd44e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEQ322100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ec934894719c47bec79ed0ef2021432ad4fdf6d14873071a4ca624260f9eeb. 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/DEQ322100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a6c32a2e2cca30602f65deb5dcbfee2a5a1e2967ccff9be79bfc95f6803fd7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEQ322100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae41e7baa4f22ca67c311c1509af2e9daa00a0ef76fe4bc02b3dfeadc3265a0a. 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/DEQ322100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888770aec99e1c9f2511fb1c5b5bc50797dfacb23af631786f30f8a73af4e174. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEKF22100875.
Mein Osten (aus "Sing meinen Song, Vol. 10")
Mutprobe (aus "Sing meinen Song, Vol. 10")
Marlboro Light (aus "Sing meinen Song, Vol. 10")
Alli Neumann bei Sing meinen Song, Vol. 10
Pass auf sie auf (Safe) (aus "Sing meinen Song, Vol. 10")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d95dfbdd708b2695b9fc6e34f965362ea9f38d9541f7d4ba72a9516519caa9. 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/DETO32300054.
Wenn du lebst (aus "Sing meinen Song, Vol. 10")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d1d087f49560415fab3b7fbc958cccca7aca719a1f8e4a2a6d7d04064001c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DETO32300057.
Wenn Du uns brauchst (aus "Die Drei !!!")
Wenn Du uns brauchst - aus "Die Drei !!!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8c236d86b9d246869708a93390d7b8af3b543fefcfb4b1907ba3a288079c84. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12328192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa53e6f598cba3593928bd39f8926de5f40e2e65ce9a8c67f3ffcfaf04540a08. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DEKF22301059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea455ec92715b169438025a5b3b1ad06eb9ac7a1047391e926b2ea15486b5ef. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEKF22301058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb12301df12a122b2777d9b50603994615c2c2b5dbdb226ea85eae3dec592ea5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEKF22301061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5e71ec2d4b41f60e881a62d71b1cd2ac5bf81c62faff5eb17c888839da8e0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEKF22301062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe013ed3e01ba2b67682fc1cf703a1c772b6cb00afa063e94fe46880e18515012. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEKF22301063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7937220670dc93bf66f4ab0d29bde660c8db91e4df9ccca71bf33cd69106c19. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEKF22301064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c83c3535c639c4b64a223c1ec9c830e98141a3dfd92e7774dbf44c82f582365. 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/DEKF22301066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258dffb979480db708b5f91ab0c70f7a218da7493de90ee369f0176668a13126. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEA612500318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad86846c6b1d0dd4ee8cf0911a50e98180bf8a735fe26b50a34d43c6924d12b8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DETO32300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc309dc7c3fc03936bf890010c4e5d559dc8900762c8bbab374bd75da35716. 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/DEXZ81900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1bf98a0f0f0e7a4d8dc6742eab44768c965eac01b0a1323eb112f0dc0cf953. 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/DEUM72113196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31fb031575674a0c307a8e163b446d86da945812893714627228dd60a4f749a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DELV41900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0ae779c52166412d7413ae49465cf9cab2602088c5fe9578523219ee0830e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DELV42000435.
Orchideen (aus "Sing meinen Song, Vol. 10")
Johannes Oerding bei Sing meinen Song, Vol.10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b763f60e2b7837bc1163153b681f2924b66a481419cdddd8f6d9ee0ae2a6ac. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DETO32300064.