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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6e830953305b1b270badc55e8a847a2d950e5a466b750c1808e01852f08de8. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0ce3d64-a779-408c-aa62-ba8be55236b8.json and https://artists.proofprofile.net/proofs/artist/a0ce3d64-a779-408c-aa62-ba8be55236b8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f55e534189b458bca518cef47cd0aab183026fd4ceec5eba3a67f093e3a239. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLFP2460178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ca6a5a3c92f6f4fcad63d977f0c60baa6e204a738c8bce7c160dc5d3901e73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2460179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296042085ab81ee648a3728ab2b944807eba2ee52b8f876b7aed1787b5d34216. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22359605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42ee81813683e721c439eab36d1838935e04479780aaf8d0c4600b369584272. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22359609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccd8b58213c5325bbb0df7389c8bd2699dd9314ddc9487a0a21c046a4c6c8b7. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UKXN22359606.
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 0x0ead80b241c449dec97e5deea720a6ca123ce8f3635e73da82ab1f102fa7b166. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/UKXN22359607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ec3d340d3f1bc31a0637c840edaa608a050532caf8d1d0302dc8397bbe54a4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/UKXN22359608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbce297036c7471058af2ff33c5fd89f777f0e5de8d8c66913194347d7afc22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22355257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb86f557184862a4fe16d0c77effec40eb0426476817741c949bc69051ac3030. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/UKXN22355258.
Tanz nur für mich candellight - Candlelight Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597da90881ddefcc2f97f7c333f0b5ab6352e3ef1dc282ba90a51d41a220039b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UKXN22355259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a5c1fe0362885cbb9f062be25b8f41fda3203a86437d9fea3d631284c1134. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UKXN22355261.
Beguine für Beginner - Musikschulen Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abfd0b296523b3528338b7e3ea49580bca5d5b6e816c62359532b0ca136dd9b. 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/UKXN22323558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ed375bf721a11275b74a0d18283e2a95617e635424afba49aa135a52c955b8. 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/UKXN22323554.
Beguine für Beginner - Tanzschulen Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad3ad432be4da7054acda55f0d07fa7f48942aa240b7c6e02d2f796f4d16ad. 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/UKXN22323556.
Beguine für Beginner - Unplugged Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1925717258a8ed0eddd3c55d4c3f098a04c9fa82da7547fce0dae7fe4f1237. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UKXN22323557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7d82a4cf312b733c3495a9bbc37f830ed3681f948e4a163bbca74a69461b9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22319310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f895a88c7f949ae2f0f8ba64d6a52330676a0c56d981330235c27ebfacae7b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKXN22319313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e530a8bd05180f16c7b0a99338d452b945f7d8dc4c9cf8fc3b78b1b364feb25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22319314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c2a72224ba3526898302ca07070b82d436850aa27cd640376b106199b58481. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/UKXN22319311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ba27bd499535d1df8c147641379000968224b371d04f9fb133af0d3858990. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/UKXN22319312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d629648cb5ea9a5cabf1a822373d471b6e964e74f04c6035c1257ec0de9238. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKXN22304963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81b213c717f0348d9d49b0a337caca0d0153c2d6e1da3fb1f05610871891670. 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/UKXN22304964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b537520f327d5fb110b05b4b1fe1c52d0f6af5e3b4958b22585ae5e70397005. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/UKXN22304965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548d7134e0721ef8377f267ac6d2069cb901d5e7bb47294001166bbeffb32a8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UKXN22304967.