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 0x3897cff3e0786f2c8fddf4e855e3a8d272330694f902cfc66d84d1ecc022b090. 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/92ee8e5c-6dd7-4d3c-a44c-5621e48a5e6f.json and https://artists.proofprofile.net/proofs/artist/92ee8e5c-6dd7-4d3c-a44c-5621e48a5e6f.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 0x4ffd470c7c49a7853fce814413abc95fbbd5adb48e848044d736d6314a02a23b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BCP1L2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f70dbde74759fbd781c3bd4efed3327004d4891284ac9dc7425bb9396d89cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRUV72300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11924b78363fec62ca40ee3a979efaf438ab582e7e801dd639e5f4cf8b842a8. 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/BRUM72301396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fef3e7e299f7f4ff3030c6de914e8374dc40e765e4fbf1c6a259342f7fe7dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRUM72301399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a7c66f7b96bb2b1a079d60b74c51cbbaa1449f93dfb0ddd6034c847bff8c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRUM72402684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb62b61cc04a4593768c7aefb129b8e7745761e27a9a529982fbba573f100a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:21Z), 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/BRUM72402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d266459e62a809153396f56e62b7e84248b326b92cd7ab3c360024c00d9847. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:56:50Z), 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/BRUM72402673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a7c66f7b96bb2b1a079d60b74c51cbbaa1449f93dfb0ddd6034c847bff8c4. 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/BRUM72402684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf956ec4b7a6203d865adf7952c2f69c77d3b5c60fdba54710e95825daf85214. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRUM72402678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803f146f988b2cf7358ae46ae158c1e677194dbed368f4b941b1075980a5a4ac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUM72402677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf7a1c21d88ab89bbbc25c5ab99132c4627cd5776570ec745e60b4c503305b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRUM72402683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c25de3a6095f62201cfb73d654167fbf429676637281e0d0fdb9f418aed1ce. 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/BRUM72402681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1e3786b50fd1f50ac781998b53971529827976c439cf5a3f0a6b6506677b04. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRUM72402680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce4f749a4a2bc1001ab6274bc4e5db137a33d61e304d599f19e73bbf5856a0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:24Z), 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/BRUM72402679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a33af0fa4b07c3ffa380b33c10a598af595446bcbfa39ecf09127e0bbc1d7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:40Z), 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/BRUM72402682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13101f7a666d0c61a85a86a252be417526ea7f7ed410c738d8730872b67f28fc. 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/BRYA52300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd85b20bb6a954ce5ffc7f81ce9138f04c29ba1e1796f2933bd0fff3c586819e. 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/BRSME2201622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e898e31683a4035d713a9106b77f3c072ad621400c809008012f5f81bae2b9f. 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/BK2RV2400006.