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 0xc70c9ba9d22c177fe1546d66e3be0b328e7d322fb3f8dffd03aeae3b10d8cfda. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b117ef36-c088-4f27-8c03-cf82d8a1498a.json and https://artists.proofprofile.net/proofs/artist/b117ef36-c088-4f27-8c03-cf82d8a1498a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elvis Suomeksi - 250 ikimuistoista laulua
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 0xc306fddc4bdf675e9b277f16ff2d0cb8822ec7f4045a9d0c93aa452be13bad2f. 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/FIFMF1241470.
Elvis Suomeksi - 100 ikimuistoista laulua
Beatles Suomeksi - 100 ikimuistoista laulua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb02ca692614a8ab0052e05bb386840be40b5a3a07af001d95496fde7aae4e32. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIFSC6500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eed7ab180ff569d6e72cbc261614fd0be978e036da72766b5cd9cbac3a34ce. 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/FIFMF1232310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e77e5256f1fbd1d0e896ea51168c833909acd57aa1c116fd142f6ed44f2342. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FIFMF1232083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dce9260d01b6005dfb05fbcf06f4d9bff0313b5ae50aa7b4beb88fdd3329a9. 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/FIFMF1232034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8eb957a2c34bc538b1e466f614252ae1ec68d34dbc9fe54c25085576ef59e. 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/FIFMF1232092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce31863ed0a795f85a29e07dec36f938b65ef6ce8d60069049c9faee2bbfdc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FIEMS9800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf200b6e22e0184482b2b318df9516612a060c0e2904d6cc6b43e3cf305e7fac. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FIEMS8500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42f792d64f41db67ec7ea5294ea6c6fcbc070d906e881f50b1f7a092dc33307. 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/FIEMS8400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bff012e7dd10e3187cd953a2ef3689e374fe0aed6c0b43cd228229373bbe45. 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/FIEMS9101700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dce9260d01b6005dfb05fbcf06f4d9bff0313b5ae50aa7b4beb88fdd3329a9. 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/FIFMF1232034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e16d8ecc80202f2ecf455a572a78cc2939d6fd3a6eca1d1a057cb54af30b032. 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/FIEMS9101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50844029637245e3693aea7deb6ae68c95d7b2ffc1cdd959c52b1efd99c4a0f. 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/FIEMS9114800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958530b079607c42886480bbbd1f80f332ad70040ca0e9298766875e91e63833. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIEMS9105000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beed261c4e0f8eae8ead5b1185991cf8171e503fa44ac4b5f2ea27bbdc38db7. 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/FIGRF2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc933b3e56e49e5ea1d91ec7bf17cf530e87a2167b5db7d5f6e448da838fc0e21. 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/FIGRF2000027.
Rannan tavernassa kerran (-Una lacrima sul viso-)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb771873889c33576bb7c7076f75f491a1f4641caa2350f8019f2648124306756. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FIBMB9400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ea0308a8eba5f44370605820fbd56cee2db466769325654c9c39c60f07c5b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FIBMB9400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3cb1e7944e4f2ba086d3950135d26ffe8c6b74f89643367cea669397bbf5b1. 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/FIBMB9400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753fce1a280cb509e37deee9551fd37013c1383a5fa583bdfa3486f454fbcde7. 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/FIBMB9400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1628a79acfc08d962efacdd0dd1506f93d761f3ea77883b701f24f68f1cbcaa5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIBMB9400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39b95c5d4395ae0f85f641c4215e4de5c6a8e8f44414d329338bb3a8cd9e146. 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/FIFMF1232373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4420d5e2207b3c59b094e6a3941c92639af11df334a9817d3eb081ec9c66146. 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/FIFMF1232380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78c5ca5e3a93c2ad2933d2029263af0f878ed4aeb39b8cfc00d7716d26948cc. 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/FIBMB8200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc5fbbcaeef810476ba51510e1d62e9757e8501412518b69904a6f48f2db77b. 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/FIFMF9600151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1898f5c072220f2548d1923011b692e1bd6f4025462962bc8429b7c5792268c. 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/FIWDD2400001.