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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c595fdabe2d915cfeee979f31d5cea52859bc25ce5be9af41b3ae7e621c7a1c. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0238096-3c59-4ba8-82da-f4e076d44106.json and https://artists.proofprofile.net/proofs/artist/b0238096-3c59-4ba8-82da-f4e076d44106.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929884bf2aed4edcb1f9f2c9c6fbc1ef425cd90f1223961632fc8a36bf2a1ace. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZFZ62178794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d37f44192a5bab0cf4bd2be138beb942a06b40712df3ccf40f5f4a5d687747. 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/QZFZ52186812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154309b6d43510cc8a5b48b040e08c035128872512ea9dba21dc5f5901d88ee9. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZDA42111454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be29d04bf603c1684aeba719e5fa812e574a4be40737b8c11b408770260f9c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZHNA2192331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa664dbfb44ce425606ca50dd1097a3813d6e2c47d48362f461fe13868d8a3c2. 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/QZNWW2172626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cb4943b83f68d025d20637bbdce0b72c0b297bbcb0a0457eec0be7abf0ea86. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZFYZ2215300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670900b25b19f403310e478d4e170e9875b04b02120f6576d6ec18b2905bc69f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZES62221695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fd4726d17b1c76b68d4bb040467f89cba38cdb855aeb7cd97f7c3eee0bcd7d. 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/QZMEN2275613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4293b868efd2a2c69f9bf8f9956daf9d689c8da762776839be4cc5ea21e4ebfc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZFYY2346490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9712eba567664f714edfc565a42f866b9e2508dbe4753094d60d46ea7dd1097c. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/QZHNC2313171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f673709231f8c5f6d09b0058a8dd5f5ba1af2c4e646a8d82f1a4e0b3cb2a596. 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/QZTAS2320806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a70d32b86ba8983f5b785251a8e009e814b2c9d5a6a1de40e29a617f15b10e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTAW2472722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb6e76944dbfe4676be29b68ff26d54fbecc62113bff86d385e477252ac482. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZK6H2521378.
No Están Preparados (Di Bowns y Demonik NS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f39cfa8925b94543f2f0739e8ce80f61d6b15410bd3a8e7bf789c55dd06812. 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/QZRP42577193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1236e11fd088fc8951a7da9d5ec259951516ffaf01de4a4fecfbf77ba39eefe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ782525223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e74aa52caed6dc2f0c758f3812129986f2cdc0480eb92a47e7d5c5253d9adf. 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/QZZ7L2527720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d46f98ff2e8419588b5dc44a834761bbf8feefb1da45f02ea715fbacbc7f3b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QT3FF2577061.