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 0x9b6ced4ab175e4fd494f59d661929ffdf0c8bbede1007b7138c7a69077001b33. 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/3a57a73e-c496-4278-bafb-882b86a1034d.json and https://artists.proofprofile.net/proofs/artist/3a57a73e-c496-4278-bafb-882b86a1034d.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 0xefd06f4816c18cf5178ad6478bcce81ff36a16de135e97adeca922205d01062f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY41747409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdacb23c5ca3877b5ab1f1d9b61fad7b1fce759c33f4a316360a8efa75d29d6. 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/USDY41747411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487971ce869eef2527f66d33b1201abec9d9bceca07c4f2792165d68149b8304. 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/USDY41747412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5b9fff9bc3bee73cfa5c494c5c485c91f7fbcdf88a5e72f2312b0dffbfe32b. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:52:16Z), 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/USDY41747413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca401dfe88f06b839f93b703f3f96f19b33661726b8a0d16b1dba53baae9ce9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USDY41747414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceffde8a4f79efa65b24ad6e173434eeab3192571e77b1cda529d76e3d278a73. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USDY41747415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8432e5ae10ea935bcb6514978c0c7f7bf2ae64d349a4a5d6b70512b57e7ac1cf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:29:13Z), 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/QMFMG1310115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bbbc0919d672826d035e1dd32a8a4588b1cd1fbf24a8e1e1c2ecc57a95f492. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:01Z), 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/QMFMG1310116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0e33139baf061f57d64e138b17ebdeb4545e33441508f6109634dede3baec1. 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/QMFMG1310118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866349a09d04350cb5da6fb77f0abeb1969b8fbc8b6409d5af2d639861059773. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:52Z), 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/QMFMG1310119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda13f53551beeb25240e2995efca8df370d4676b513017b6f14a37144fc8c4b. 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/QMFMG1310120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfd9051b0237986b426f552963206af4fc585f3e669e44c8974e4671cb1d81d. 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/QMFMG1310124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ead9b840cefd03d92114890bf18c6a0fb6ed6228301ae0d4d21665e4e8c980a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:13Z), 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/USDY41747417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ff6451ecfc29997fed38fb794b831dd5097cecf463e3b6adcad912c5ad5bb4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARPEJ1450125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d85fee3e65176758c65645d2dba58d037de88c351458cbe5c6ca33bf81cd1d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARPEJ1450126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595b0992cc73d6d1fd5b3ade620c065389f2c1bc7dfc4854f2e675429483897b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ARPEJ1450128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7992ea180f38b8ff969a9f4278f517dc905e5e1d180aa267ff8c875d691fb64. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:42Z), 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/ARPEJ1450130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680e945d0b1aa6cda4e987db102ef31185ce4258ce7e65c4310e2ccbb6411259. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARPEJ1450131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa2a048f76d74f8141ec82b8e353928606368b9694df3da2927a43ce80bb05. 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/USHM81820043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc53f934bdc34c1a3f86d81d5441e32457c5ccfddd47d4b7f250f6aed821df. 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/USHM81820044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e1d3dfcff61bebc5a4fcfc415c7b46103d57977e2d08a3e7233e5fc38e933a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USL4R2474082.