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 0x3636a1ae602c22495e2c028042480ee02b6218fc504cadd464857d39724e9928. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b84f065d-77b1-4df9-9070-b136483eff52.json and https://artists.proofprofile.net/proofs/artist/b84f065d-77b1-4df9-9070-b136483eff52.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 0x46d718dd69336995eabca2260f599c231c30f3e38453c1383823db7e1e7ff110. 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/QMBZ91920418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdb9b4ff1c03c312ecd233ac63a77c94fcf9bf9d15c4907ed7d13a573c14d38. 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/QMBZ91920421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b3d5a73ad41876fba3e126cb11f82f8a4c2e2a9facefc96940b6a9342b336e. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:48Z), 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/QMBZ91920423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76c9b32b3bc7f7d00d872464f4750a35255834e43fdb37b982e808e83e1907. 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/QMBZ91920425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7509b095dac2c2d13d45f6323b10c9bce25e29811f384d0a788931f63a4b6287. 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/QMBZ91920429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87be3ba40bd9417b203b256704fe9b104defe144d0044563ece828208111149. 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/DEZ651351821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44caa9484f20955f79fa16ab12c457cc7a03792a9b3cf27f27bebb00e3f464b6. 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/DEZ651351825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70d0f9e45974e2e79d3b0177982e673a50edfea5e1c24a3fa4d8a28e61e8b4f. 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/DEZ651351831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933ec1cdb088f62d79538c2a4bf2469b94ac738c4673da2945cefe4644681ba5. 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/DEZ651335596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd831d47c77aff251ee0068b376125d79c697461289f09a211c118b1f1ca9e74c. 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/DEZ651335597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d9ddadf34e7343f4a4c4b3b15f2d8300af6d145e7a36576d4ef157e3a22a7. 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/DEQ121745765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba74af39f9d361c611ce36b1029f36cc4f783dca21b6ed9a2ba97ed3f69398b2. 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/DEQ121745770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c9106a959ca83411267c6adfefbb71fcacb2510a44ba106932ad8762074cca. 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/DEQ121745775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f733c6262b5307779feb1c482153a89cdeda00d105dba7b445f44fc7ee527. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM4TX1899272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7128d71e8261821436d95c4d71bffb214aac1923fb1429e5d3f08e560e9c734. 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/QM4TX1899274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51541302bca3bc761dff50af6831db65749a25440eb45de649899567b8f5b1ed. 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/QM4TX1899275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8336c8ab5176244243e35d4539eb89b6a6ffa849bc1bada53777d654045e3f5f. 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/QM4TX1899277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d09990979893ea9fdaf9906964d32839ca81a54665b007462fa206bc6af94a9. 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/QM4TX1899283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc526015115ed826f6540551d29cd177373f63c30e09f60ce63651d144b77f7a8. 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/DEZC62119828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8b37e0d379497447b96c8809f453ab44d40f2db25cf23a6ece838b7aee4916. 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/DEZ651354115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee428f6001ae94faa4b9a47dcf0ce287c6b3e245a5207b0c16f5df35d8444a. 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/DEZ651354118.
Ein Formel1-Start ist eine Wnn-Wnn-Situation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6228bc4519e66fdacbf30c52e317bb3f638a31c00cb4945d53b030b530308d. 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/DEA621400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dfa758f41161b23899bb9ce6b21ad942db71f4e775a8564b8bec6610cf695a. 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/DEA621400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a69cda589ffd5e466494313b90a6528550c7c208c46a11a3b8f749aa61eec2. 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/DEA621400202.