100px|right|Duron logo Duron is a line of budget x86-compatible microprocessors manufactured by AMD and released on June 19, 2000. Duron was intended to be a lower-cost offering to complement AMD's t
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 0xd763dd6c892b818981fe4e94a16a40b89dd894a815a59592b3e09058aef3a6fa. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cbdb4f8-a6ea-4f96-8502-38caf24c2bfc.json and https://artists.proofprofile.net/proofs/artist/5cbdb4f8-a6ea-4f96-8502-38caf24c2bfc.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 0x46d94dff7628fc8854701b5435113ef74150e76fd57b76b6d8a7db9511090436. 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/NLNM32303025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55715124ec6606d2109375df9580c876070c6eb8d1d6605e2c90ef1e57ecc889. 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/NLNM32303026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8c9b639caa85ca15e7117ac57ff21fb9c25385aa0388cd3dbff50e58b9b6fd. 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/NLNM32303038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4272cd33422560d3b6a824d3867f15261e49b035447e3efab03bbff36befa9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLNM32303035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b03b71695623b564dbb2bdddac6f69942d286cde1ae5f84bd903f96f16bbef. 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/NLNM32303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594aab6475e59fc38179e65d1c004abda33f084254d2d829798bb3893bb7c379. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLNM32303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d94dff7628fc8854701b5435113ef74150e76fd57b76b6d8a7db9511090436. 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/NLNM32303025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c470a7186687d90f65bed0aa0b1da0b1681ddd2d98d29ea34cbb447a9d5ec. 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/NLNM32303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6f3efe2f047d67233f690252d1e196b7dbce8c713b2895a7bea0d14b8de50. 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/NLNM32303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d507306b0fc467d4fbd33db980ba6ef0a5ba78a36b6c6a5d5e52b35d3114d. 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/NLNM32303028.