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 0x426dd0a4b0e45a9366531840d08747792882d656e090fe18461c1afbfa509de8. 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/94d93b27-5a1c-4475-9233-703002e1d82e.json and https://artists.proofprofile.net/proofs/artist/94d93b27-5a1c-4475-9233-703002e1d82e.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 0xfea3ecdaacc3d5a92f63cfdd7b4bb9da1469b6b88db4af94af85e7f3f13530b3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWR2397254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b68fdbc1c50279a216e8af2ebc8c914f8f13a68b070744664a658119480830. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAX2355213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f14d8f4f2032b31725ca684d9879a6f3d6438e0a759df7e362d97c3fa0afe2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTAX2355492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3981e43593666290183531ba2ad0ab23ba087bab67c5d17d236b4408e0fa2aa. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTAX2355497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c49a97c3fb0a76b3449dd3ffb561f7e0dbfb94ecbeaf85f7be6eba709bdf90a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTB72317465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4745a6aa53e8f8d6fe00b03434ec7357546da35a0fc8935509c0d9352e53b2. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZES52461076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe087b4b9225b3155459468d0f3163b05767085674a3a8b2456c693304b1b1e77. 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/QZES92490663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5e9789c1da75ca3277f62eea0b845aaf7ada171395d8de74c092075e8dbc23. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES92490670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30d2a439a0b3b977f117705efd19db7c25ad420296c3d30f2773f7d2cc0326d. 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/QZHN92479997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac67ce26d519637902fae3c2e15c1503732d23c776a50c4df221a18a66eb10. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZK6P2485915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea81230105f722d53a82d90618c09e3465655b5c08d5403233621280f4bb1a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWQ2482413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db66080922a10cd4dc04ec9d03872840ca76bfee281e58e702c6237749a6af8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTAT2405660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1772d65e0be457a3bd74509db2f24b2d25d52af63a4fdf7c270ab98759e2232. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZTB22419989.
Mi Motivo (Para Angi De Parte Del Flako)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab4639cc554ca1b48855d101488112218c9d6d0fd3e809a30220b5a2e0d825e. 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/QZWFH2425726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0265bcb8bb06b5c5aae82886948db9dacc7d4490aff131000f9684c707cb14f1. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZZ762413404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1becac09443d9ae3bb8c4d0276c6c13c4e6d4e6caaa8f76391e1ad03460a6e. 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/QZZ7L2430277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916be66bf9b5b3a8d58a49590cfeeff575467d261a0238a745ef85faa0036b0a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZZ7T2474930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e6e38cccfe13cc383d7a623c4ef047a420b69bcb1ff331733243bb46fb2e66. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZZ7V2464712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f75af5f58ce998e1fb01645fe46d3acf4b7a2408388d7eeb684882ba5e11caf. 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/QZFYX2500253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e7d27cbec3ddae7efbb6912fb0b09bf4f82c9541622ef8a1b708fe2e9293bd. 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/QZDA42593389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5077cf225e1a476d57c16143aa4a14eea59cd39c5d0b2ebb5d9da5540913cf02. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZES92556104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098d799d086c228f46b7e6cb82fd112c9cf788f206a8f7ed76437cb6c4df03fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN52508308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ee30418aabc73670bfdb717a88436030b4dfb6585736ccf09a4d710843dad. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZHN52598863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56906c4ed4091e7bb0714dd82f3ed6ffc6eaea627dc9790fc89900f055591639. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZK6Q2563869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad9b1415a9296d3a4d12790c8fab8f8324e699493aa98f92e79f1582249d0eb. 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/QZK6H2577836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b013c439bbbdb23c057495fa8347139674feff8aaedc4641d4f2a242359b2fb. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZMEM2526314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f59b2dc15a2ac9530d12d7c91a1915db1ecc4eb08d99a509cb78a5fb0fb30c2. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWR2558323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47cd26af5f1da97e77ae94135f17d71f9db13dbdc21cb2a64c508bb0e54e83f. 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/QZNWR2557210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ad1af49610c7de21d47f4e9e428f31487b788109ddd5e968f9e167aba44579. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNWV2520021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24243dcd5f9c050ca8e4123bfe4161d4d6949b68bdc5d9a420f4a79888413454. 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/QZNWZ2503856.