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 0xf59be9a9f8292575bbf57d51d479dc3b4573bdfc07be2d5cc801280adeaea765. 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/65e50009-bf8f-4a92-930d-8198f8882e05.json and https://artists.proofprofile.net/proofs/artist/65e50009-bf8f-4a92-930d-8198f8882e05.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 0x6c8da1d9c7494d6424d5e744b923043b86e7651b04d4b1dbfc4a493e2d92ca49. 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/USAT22223200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9fdd40650f46cbd410e59d05bc0eeec0ab7f5facb489de9a75e7e3b5bd087d. 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/USAT22221871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea04e9f02c6ec88dd4f1cea23c09864b143671493a3cebfaa51b12fc93303b8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZQAY2310763.
Rental Cars (RADARADA) - Sped Up Version
Rental Cars (RADARADA) [Sped Up Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe504921ffd0d49be456e203b2ccdd2205e01217447a69b36160f1306c39b41ea. 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/USAT22308021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8da1d9c7494d6424d5e744b923043b86e7651b04d4b1dbfc4a493e2d92ca49. 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/USAT22223200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5762e25810895216e5190ee888d6da225eae863c5a9d35f351b6fc1aaa073d4. 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/QZVFR2301563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5d0b49bbb8ddbfbd5f8d97af4469e8599717f02c933ab0ac2d0c2c68a0e8b. 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/QZTLA2388519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f5f089c40b6e9c629b35b1fcb6add23818388ae2494ce665bbd7327fe1c0c8. 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/QZMWW2376660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ccd54fabe1be298ca7bf18be62e789ba0c607bec3ecf8ce5a60877e65c4f4b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USAT22314202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaa254bbcbfce0df67d52232a12785f18bd6d9b79bb62555d0f6dfa6c5095e1. 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/QZTAY2462094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7a9b1324dbe730b026ba677a7f361b478f6be6c2ae070e5b63db8ecae27533. 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/QZTAY2462096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2706a57d98de4b11f62e8faceb115ce48460c6a765afc8822b3f5a19802e72. 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/CA5KR2504941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4bb89508173ae81856cd7e513c1c1c725e8db20e95df25c7ba3bc366a00ba. 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/QZES62499876.