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 0xf1bd5d12fb6d2a2ea7b9ae035539ae0399d61bf10c6c1b94aa03a03121ccd482. 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/2f804f7c-9660-488c-bea2-d3cc8f22b62a.json and https://artists.proofprofile.net/proofs/artist/2f804f7c-9660-488c-bea2-d3cc8f22b62a.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 0x8c28112559406bf32d54c4fe84f17c08d847378bdf63415891bcb2141aabb28f. 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/TCADX1876091.
Blowhole of Sorrow, Lend Me Your Ears, Drink from These Eyes These Salt-Tasting Tears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723903ed5a58e87faae574f2ff9c21e4bf022ad7caf2fc8b56e5e40ad9b21595. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADX1876092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf981460550692600a48e45f5be8ad051e3c520801420907f7f554f628dfb28f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:27:48Z), 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/TCADX1876093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd344a604dbaaed0bf3919a92efc7b7ae5a8942865f5987fc092d2d4f56ca6934. 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/TCACC1487199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47650461deb33731c46073147b099519c6d6ff68fb6565eb5c123b68f8990f. 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/TCACC1487200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b28e0a9eaf37f6fbb535311a03dd0877375db7336af8dd02a8084af26816d0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:04Z), 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/TCACC1487201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa113a843c65188dee4bf906ba3a709929de703389672db6aa93795f2d30cc540. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACC1487202.
Dinner and a Movie on a Post-Apocalyptic Earth: 12 Bottle Caps, Successfully Repopulating the Human Race: Priceless
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4925986a295f81cae60d0aae74466a87d4565e9e126df77368800580c79c712. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCACC1487203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762d87aadc0f6f9eec089b7e84c905068dd1b3fd6768b407af0dd30bedbba5c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCACC1487155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74fad3a7adc6b2cd7c0ddbff76df192f98da89a849d58d4faf1871bd3592095. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCACC1487165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd403510e1d99df003614266f99a51680ec23f402f37b571b405539b576e3b. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TCACC1487168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64891fc4568a8e1fbeec780b71a6a1a7d6be96c9ef48785da4b9aff45c17727e. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCACC1487169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304eb6575d19d29a11432053d62f58df9ffa349a57abfbc0877e39d0cdb1b903. 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/TCACC1487170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc12eba5e2d6b05e76890ac0013bea908b6886a9842f03f51160b5c50bb94c8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCACC1487171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b94e373733e40dce59daaecc0ec8f0e41b4d56ce336e31461b7677021758217. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCACC1487172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dcacbce2b6ee1072bcd1ec72328b1ea8a0973d67dd91abb5170fb900b2feab. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACC1487173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc043152abd1328f10c9a8a9618e44f48ff9cd3dc7fe5958345bd3caf02a2d8d4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTAS2354982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52bc78ff6026223a9a4d52be31a117f6285c5f477828f84ac483fc738844a26. 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/QZNWY2378458.