1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9d847ab7af91b6b54e862f551923a9c8c72ed76a31ffd5e4651c1031e15e99bd. 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/45a2a9ef-56f6-4ec9-91b5-117baf118dfe.json and https://artists.proofprofile.net/proofs/artist/45a2a9ef-56f6-4ec9-91b5-117baf118dfe.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 → block OTSBitcoinBlock must exist at that height 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 0x14de5a4989939a44ac404bbb2cc3aa26cdce2cf1ff2d979a74c587eaa13ae803. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN72185357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0946855ff81f3e0c5ac8c7ce81f276f302f1fbe37253acb80db9d6975fdb80. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN92145814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8445320b6a2172b070607cac9a2e30780bcfae1610b16356bced606e1beb8fb7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN92145815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5582b933277743c290f4950a02e28fa28649d1d5ef2e34e9b0725b2eb5ac3bf8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN92145816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fdf89d68e8598d50a905ffd9a847aa034f69e0a847682ce8488216138b635e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZK6L2141426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe24fe885e5079dab3ad5940cc0f875ccb8f309a26fc201ca22bba986adede3e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZK6L2141428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517887f4563cb4818e3349a93603c479fdd878465ecf5546679d304c80aff0e2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZK6L2141429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c34ec725f98d137f29ff675e24287bed9ca60ef04f2733109166ce76e9ca07. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEP2127831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc2aa7513ac7f415339e5a26b3cd82716a671a333353a310afb16b51c5ef346. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEP2127832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e7e64b9625d5e7a6a4dea85415d50d10184a302d491d1cd4fa6c969c586b1f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEP2127833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd909387169e362514dda247023d41c9a71f67c72b3bb1d2ca738db1cdcf10062. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:16:55Z), 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/QZMEP2127834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef914af11c213e92a5c67c5f6c1513e1d72fd1df3429de168f5b373dff801c1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZMEP2167081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fe7f3b510874c5fc0aeb2c59c40725e52fe90f9e8a69889d82126aa629f630. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWV2119715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7bbeec90dea4f1c5f68800a016c0de8417c67054b44b281ac8e92cc373b19c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWV2119716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec1e9c17365e6b9d1e401aebd36fb675ae041a94a6884ace7b1c427bfdad86a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:34:58Z), 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/QZNWV2119717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e1abbc5e11409851a90713a3a0526bf973a8b9bfd285c53f819e3e37059d0a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWV2119718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d538fa80200a8e892703b8e554bbe95342fbabd384e8666082a2f7138a432a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:53Z), 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/QZNWV2119719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0ef62a7b1a51a88b71f9dd336e6d4ea01d7fbf8f3950191118e77f523f68b7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:57Z), 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/QZDA82264234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8278973cfdeffebbe6c25d87c57db11f332f0cb2729279a7c32a1ffa31432ca. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES62258256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189a5bab1ad0a5e2dad3fe1e1077aa3358c7af069bec0100dd9b33384920e19d. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZHN32249759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf9f5946a5d3d7fc1a808c154fc1a7eab32de1a4ca65e557bdf8be54e60c8e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN72262633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40675ab3a942ce26bfee641c385c301106fe3f7962cf7683b37ba3002160fb94. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNC2272016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bab84263310731313accbefcfb9452edd4534854a20b6f1ef7f18d676ff0fe7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTAU2284102.