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 0x5c73e6bf400a57df1f1facf50702eb18f892763cd4b323ce1a503cd9762193ba. 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/1750485d-189c-4933-acab-fabaaa3d240f.json and https://artists.proofprofile.net/proofs/artist/1750485d-189c-4933-acab-fabaaa3d240f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Sehnsucht nach Licht (ungekürzt) [Roman]
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 0xc96bd977ffe743d5f90899b7517e2938ae48396f9785f313227fe51fe5d31a8b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11eadfd8a8bf2a449bbb2e905a3fedee9dc8c4853fa54ef99d823ce38b0a890. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DE1JS0568676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b306b86df1529357da5c89d95d862de9e496aea96a91b7c2aa13b51707679a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DE1JS0568677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bcc6d3aadedd4e7f7bf554c6a7a4dba365af12527d32c958f69609a3e5a993. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DE1JS0568678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc292018007ac3dbf9a9d42e95439fdaea7fdd14bcabcfb7ffaccd0cdbd3bceaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee57c152ca5d5a8453a0e88db76c26c87736e5e1d2b41cba75ac9a26cb0f6f4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e81e92a4ff3a7d8531b0b1c7234c8bdc2f1f7ddaee082517e06e17d415ba8. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DE1JS0568682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f5aad7a262a95e31b2586e8097c27232bfd657c8f8754d43297c929e0ecfeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf00ca5b359698d54709af5c88090dd98dda53a3264ec8fdf499f85a8f5a0a2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DE1JS0568684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7a88debd57a5fc43a1ef9bc4d005cb5d8f3f8f1732349f6546e186a9d4c72. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391fe9e312415f918c434deefbba8f84e0f03f90c6649e6f9ce5c15e3064ec6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1JS0568686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a92ef286c30b23f3a647ff67261369d626cd9ca45b34e96da9188336cf78935. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf767ea78937400fd12f0ec3a231538cdb140ec2942d61468495385a60c3ec1a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce583a68d0ff33183812f899e2c5bacfa43829dae8a78b9ab6f40fc33e98f946. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00b02762b9e8f7274fc4b07cce319543acf6e48e991a216517a1fee78bc1c71. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1JS0568690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98911541718fd6b1f6148596af398e6493591cafea4034cfade2dd1208ca256. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972d57fdb7be048a75bd6de435bc5789dded9697a85f955b0691a69695f463a2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DE1JS0568695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10470d30a0c03e94bc229a1ea9b1c576748c9637d1173d98bafbc8d9a6af0d3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e32573a8e392993eb49c93530b895399e4b13aed99d656ac082cb4e50cf2e48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3380cb8e5ad7aae13a95ee0e4c0d3f98599d96b2998dd960bb6a9ab6c27d925f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87a4799b795631d0873ff97dc8527252e52f9b004d8a7d5327e7dd1121f2b2a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DE1JS0568701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17ee882a12b104bfc0b3afc04e2f470fbc2d43d1a2ba0727461a45512af0ff9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d8abe008d43b2aca0acdefebf43a83974ef172e400c636cd2071935791209d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ba3ca30e1ccba7edae87ca3ac8028b9f1e096c1ea13e401162f6a174ad024. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DE1JS0568707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac7a0c14cf85c01866c01d6798e3a721f9fcb5bdfbbeddd132c3f8c5e0bf200. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86f28b48626c6bd7315ddee50e07e6ab3149841b730d848e27e99ed80fbe38d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DE1JS0568711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a234b7142137159016e4ad89b30b07275ddead229ea4bbaced55801810726. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1JS0568716.