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 0x14807cfaa7729a446e63e57e3bbe15e34a953be76b11fd0b9516468ad6ad31bb. 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/836c5cf8-8ccc-46f4-b61c-a80766357233.json and https://artists.proofprofile.net/proofs/artist/836c5cf8-8ccc-46f4-b61c-a80766357233.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 0xff5060bc657fa02a1464b45715a9bcd7d737fb787f4664d7bf67299a23e86e94. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SKAM22000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9acb6b390a7e3ded36a838879da250775b6750b2b7dc91bf13a9a8c37062d9. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SKAM22000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49693159d5dfdfe01729c9ea12514a964dbd42f51e81276bcc6b0c04046722be. 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/SKAM22000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085660e776f0c3c0f419d275ccd96328a9158efa396919f6d078dde85fd7159f. 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/SKAM22000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aee64a056e5bb1282814a9cb382fb3ebb68545228377736eb7e8895562c4ce7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SKAM22000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059ffdfcaa60be4b7941b8799a05b9a459fc24b03018d1978deb9e39a97ae20c. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SKAM22000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcfdcb9d74cf55fe19f208a36ffc233fcd5b455f00cc681c44191613a6d76c8. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/SKAM22000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f9094e1beed0326af6f0666b4b3f2df09987612bce2afc1f00ad9f27e31a48. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SKAM22100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0ab62c43896179da1b28465980967fe022a58cc00ba0b3b0c52aceb0524984. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SKAM22100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef6a60444d80ddf7524975b8db58738ff54d40f6100e8264e333a704051d19. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:55Z), 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/SKAM22100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432acceee07db40b99199fd76c19959a6891d3a3eed6412dba31443494a4a16. 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/SKAM22100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa290b9bdc8e07aa0932776aef18e3b6e8a3363018cb61e5a3359e1c57b0f9ddc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SKAM22100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb794601f171223fe47f4c5819358c1e2a36f7828089a8556f535ef07b9e7bcc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SKAM22100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b52529329d711e7ba4b704cc260c1104552bbff8eaddd29eb84c113cf7f5fb. 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/SKAM22100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc977e8ac1e2ce53ec5c62c425800a7fdd9a44d2bf89a1ae2a655d9b6ce50e5c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SKAM22300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081bcdc22361a8f616de09c61bdbc8f5a06b1dd80c5006fb5a0c372b24b47b6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SKAM22400103.