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 0xce3fba189314d1229220009821ee2b83c1feedbe28736369ffa4cc7bb41a93ab. 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/55f7ab8a-3995-4740-b225-f88968b02378.json and https://artists.proofprofile.net/proofs/artist/55f7ab8a-3995-4740-b225-f88968b02378.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 0xda937ff75c045a7aa980bdceee5e0ba6c72f098e53cac0ce590ffab68045327b. 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/DEA312400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306b8e99938e5308104a4f02c387341c69081481ad29d1fb9803da079cf6ec0c. 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/DEA312400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2754f7da377b34e8a316dd758b92bd1945ce92206895453256858f201634a3. 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/DEA312400231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa9cc5b3445a5c812ed633d80a7a93beab9d33f8142a13a5cb865774d2630f6. 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/DEA312400964.
All The Dreams I Share (The Vocal Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32249f93f031af2a4fad7de1685fa36d152498abbf513bee39769a9799b0fb17. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:19:34Z), 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/DEA312301140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e031010f4b623f0eff01729b7c7ec56cdf64ba1ca35cf15e34457ecc9dbfbb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA312300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68f72ceb66e482aafd54a1e2b63612d450cbfeedf21609797a72036df940f75. 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/DEHM81901299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267884998aeeaddce47c413a399e065f208d5332c7278be5293f5ebaaf3fea8e. 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/CH6542149308.
Am Anfang war der TechnoClub - Biografie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97513dca825224be1e2be08af264f9758b1ac12e8d66a19feb0ccce0a1f8f55. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USA561385507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52ff2e47f30807d093d88e7de901686788947c3fc5157c6fe1c6b6756f5762. 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/USA560873785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75183f6f3a56ff93f43811191d6a84cb2e0ab7a4ca65f439040b6a6677a203bc. 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/USA370577663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522fd56e8fc916521444f386ae93aaa5e13ac0e24ac4493df5db92a7d50ff22b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA312401222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7571e79d87881c5b63b9d0bfca66152a323a5f237925482db2681f156cfa89c8. 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/DEA312401211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124c5d2cdb6f85d135056a3b1901ed8d51dcc45940e2235110a3be552f08b35b. 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/DEA312401181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f38f92301442b6a571f1d327797e9923ae6c4faf987e7e9909e868ef8fef7d. 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/DEA312401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93982beae49f0ccfe1899a4d45b9b697b8228e4246ddab9404873edad606f15. 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/DEA312401017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b5c8f6acf53444d9a7fd2083a59fe9fb9628dbf4e1b56c1d57cc2b82999ae4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA312400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f48f170b4604f3aabd558e6e8747c5e0675f9bc160fd5125389e804e29b8f0c. 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/DEA312400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be41da0e1284b625d8766ee3cf51b0671ecf1083fa964f455208e2829d245f9. 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/DEA312400575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5395b9e5e96dc1a7070b43c258832eb53ad10b012f2149ad3146463a533b1542. 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/DEA312400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf3c3282b993491cc85ea1b19a6b0d01f5081d940002629961dde850505bf6e. 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/DEA312400218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c24f5cf02244fe7d5f75a68ed979235aff411394fc7208a0b0f7f28db370a1f. 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/DEQ692400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe596e83bdec12194df41c5b1e872d1c74282a4ba8c7a929a596d85e8d76e61ff. 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/DEA312400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca42ac82d75e79a45ec61e5e88c3f55cf47cda6313e988abb5c2ca5eebc778d. 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/DEA312400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd984f5a4b2ac881712a4e0df3a19619b6c01fba692dc1ae6feff87c85717c671. 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/DEMA61906944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b2a68978113334e1a85046a1fc9bae599c300193693372f76f93861b4f493. 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/DEA312301229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbbf03bcad2a326958655e2e5d2d26d39a2ef54402c1869f56a8c9d6e3fa861. 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/DEA312301215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a226523d9de03e16468aec486713088f4a879fe7df12de288653228bbaedf4. 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/DEA312301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bcfa6c25880bcd8533661d9edd1cafbe39a628529010fdf54805a356a05812. 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/DEN120205260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc099032848d831a8ad56f201b33c7def8c0b96368618161359e23700c33220. 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/DEPI82221026.