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 0xba63ec20e9fef25b14d30f053c8c586a022592f0b7bd45bab91d90c2a86cf659. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/852efed7-487a-4d91-ac14-79e42633ac5c.json and https://artists.proofprofile.net/proofs/artist/852efed7-487a-4d91-ac14-79e42633ac5c.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 0x496594fb35c1612df10fa1d7d42c4fa3e33dd4d20cde9129ac4a9f2929ad54b5. 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/ATDQ92460003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cece9715c85b8e9829fc9f70d887045ff88f889181658e921887751cbbaa22b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATDQ92460004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322873c3a802fca84e87e0f296ae308e9e5ba587cc0e53d43a6eee2410cf236c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATDQ92460007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969343ee9c137cd4314ef82378b8fda2618952126665fc8005cb77bb3d52d0e3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATDQ92460008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865213587bf297dd39a985133ae430c078be0fa2b91676f0f887d7e68f6f7f5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATDQ92460009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb90fc9353214cf4d64b8ad1c245545f2760bc8cd1463d8825c50634ef7f1f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATDQ92460010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bcba096243957737c51b6051faff30c52e446ba301cb05ab0bdf3176452a2c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATDQ92160001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb73656d2100d02f2c2a4cc2d4bc02d45d5ebe866fe3a13b01a4b0b906105b28. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ATDQ92160002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6361e28f66e4b1f5fa6f3801001636dd7252ed4fa4b1bd6fe16a27ccd0c3f106. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATDQ92160003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32caef563bc28fc7b2ce000da6034a29746dc94e9e0d4149ff0539e7d4b1e20. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ATDQ92460012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496594fb35c1612df10fa1d7d42c4fa3e33dd4d20cde9129ac4a9f2929ad54b5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATDQ92460003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b7c1e0b43f8fc2aee8dc797f88fbd34533a6416d74a962c13c583d3386ac4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATDQ92360001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da352467b3742ab1e3cad7181f042b0a08b0188b70d22a4adfd559dca4d8b7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATDQ92160013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb73656d2100d02f2c2a4cc2d4bc02d45d5ebe866fe3a13b01a4b0b906105b28. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ATDQ92160002.
Schlafzimmerblick (B.Visible Sonic 808 Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bc20aa4fae06fff71885d2c188fa8b386fa04e431bb06ebae0775dd0479526. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ATDQ91720005.