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 0x1e63efbd88216c86c40670926fbf82a9aabbc6fbc9ce9801ba888bc029aaa437. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7956000f-d54b-4e13-bee3-602854f975f9.json and https://artists.proofprofile.net/proofs/artist/7956000f-d54b-4e13-bee3-602854f975f9.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 0xee58e7c52d767e3302664c2b28c6fbf0bb8ea14d52a512f338ab57834ec802e5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMEU31811223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe449124b31a733f90dc50f20910013ed879ddbe6cc5e20d99f8d76d893375280. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:03Z), 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/DELJ81937237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355fe24d9ed7797e51cbc49cc4ce1bb318c9ee34ba1dc87d240a87e1f6a0aeba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DELJ81937240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2f8d9e1d53fd221187f08b56c39069be428bb82f2faa2298f7381986a6fda. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DELJ81937245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b99549bad8968d16f4dee71405ae167f7e9c15b42762a4760ecbd5494bf811b. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DELJ82051600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbe26c7121dbaab6dcb7714aa01acfcf654f461e950846e9fdf26236747f05. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DELJ82051601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d406d560b7621970f295ad991226646098e3c86adbb6b1080e0d136560a251. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DELJ82051604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddaca2441bd8614097032d33d5fb3de870137298cf3bd9d3b0fa7bfa36a19cf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZC62114195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7506d88f73564e1bf6a51a3b348b77a2701abb92324067d33fba9d64e78b255b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:17Z), 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/DEZC62329607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf970be5a55412161225a3995bcb00246ee48d6bb983a37f7c25df42a08f611. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:23Z), 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/DEZC62329608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6fcaba6d30a54ce1940dc08c03e8dd30f7599ae7e2349a36648f5906b74f6e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZC62329609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a36f10dd100ca8110452cb657d5fa5c3c578e4698df559807faf2a9f8381560. 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/DEZC62329610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa455ed55989c002271a31affad1f1ecf314a0382361f57179cd12a0a3c49f34. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DEZC62329611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaba3db329779584adcdde6153c4ab1d807af70bbac747f89c2b3117f3306f4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZC62329612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172d7e5d8ef0dcd389624a895feb67f86cfa531770aa5e91ccb315538c330b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZC62431185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f0c9273f05653a2df0aefc5314595ea46aa5e899ac27d5a5987c398e34f05d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEZC62431188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a3889c9cb0287011ef2b4b404c8c99567bc5dad5ba30359ce651c1bbfbefe2. 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/DEZC62431189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6421bb82e3be1d20543b165a08ff39bd499839efddf0e7da7e63e53d233b9b0c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEZC62431190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cfee0b0d8b763a47e6b16d80711ddb47964ebc1ed3ab2b22cc3fe421ce3d9c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEZC62431191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3249aede68e284cd6adcfc33629cfab94a7fb03e98faa41f35c32496486db4. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEZC62431192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0344e665b01270298d005409d300786911d0ef1af85fffcfec3e879dde485880. 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/DEZC62431193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8413455f41b2ea9fa80baa77dedca87437c21107e0d3e6227a58f27d016a467. 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/DEZC62431194.