300px|thumb|upright=1.5|alt=Two 3U CubeSats|Two CubeSats orbiting around Earth after being deployed from the ISS Kibō module's Small Satellite Orbital Deployer A satellite or an artificial satellite
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 0x8000502bfdcb060863300f43b205b59b203b9385bda2c4e26e668228e7692d5a. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54f35f58-71aa-47fd-9f89-478bf3c7b27c.json and https://artists.proofprofile.net/proofs/artist/54f35f58-71aa-47fd-9f89-478bf3c7b27c.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 0xf813746b5609a823d75063674ab930803693a624b05ade8be22de73444a15329. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QM4DW1627064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd5501f1e538fcad7308626281ec71e6a429bac95489c7543f9ff1358a43e3. 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/NZRI11901661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a47539cf96849a6e57448aa91969abbd56a9b9ca55cb66b0e4d2cdad5cd297d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NZRI11901662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621adde4890aa94c86a199413d225c63b5a3cdf524884827d030ead83348d25f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NZRI11901663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002098301019d08a0637995c3e422be2ee951e47606333a4a907f584d3d404af. 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/NZRI11901664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e38503ff0834632751ea927e5f79876d1e9c9ed1b438e9614ab54f1c42387. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/NZRI11901665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9574c87c6eecf56f7540b69b50f4d008b3dd81ba67be59233f8e9ac8fbac7eb6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/NZRI11901671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2158f0665e4beb44d813fc0e49ffb7ceb617f7f6b1a0fbc32669b9e5d3b0a2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHN42242837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3550db6c0ccbffc0b57d7300721275732b61e261dd79bac8ccb90ca129f645dc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWV2411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c720ad2806972c675c6539b8797acd88c1cd9f393f0cafe19b90964cc831cae. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNWW2453192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b49597c0d8f9f2be7bf87a4b689af0bfdbd96392b22f80ce67e1742fdd6a472. 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/QZNWW2499116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3550db6c0ccbffc0b57d7300721275732b61e261dd79bac8ccb90ca129f645dc. 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/QZNWV2411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b49597c0d8f9f2be7bf87a4b689af0bfdbd96392b22f80ce67e1742fdd6a472. 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/QZNWW2499116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527abf902cf438633c99b9160d3c8cc441370c798db320cadec5212eb0b908d4. 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/QZNWY2433579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0054e0126eac0b09137b3e4b37ffbd9a7380e604c60e0b7a0bf8732be60429f7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWY2433580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c720ad2806972c675c6539b8797acd88c1cd9f393f0cafe19b90964cc831cae. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWW2453192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c656e0df58f8f745cdc8419d73a994582f4169f726c72727a5b5141dc5fae9b. 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/QZNWY2433581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b94947e7c9b6468768c72d19c25779a2822190fb154eadcec632cac6fdf18b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWY2433582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea4e26df979e33b139f16a9f80b423b94fff6e41af3b1ae228fec157436f8b4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWY2433583.