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 0xfb46486a1a66e62a3ce1c54253780b0678f0624273ae2ce2a7dd2a8d510ff362. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/682ac333-0d4f-4e1b-b080-ef084ea7498f.json and https://artists.proofprofile.net/proofs/artist/682ac333-0d4f-4e1b-b080-ef084ea7498f.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 0xc3430980dffb661ff55e2707530c2b97c583f1a64567247ec6316a1fa5370123. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DGA072224339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04da4adf410fb3239d59a43ced54fd9dc8c52ff8d74a0fcd824f9f33cbb61f4a. 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/DGA062238647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb521415bb43abf488d8c240f47d0876afa2a6a19d85af7e5841fbd1f4c81dc. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DGA062238653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe23f072ff67855df8a85ed4bc99d29ac46bd417d4eb3cce7bec915280a09cb6. 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/DGA082200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac90c83cccafd4251ff56795ba25fa74082373b899ae40a630cc64eac1e3203. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA062366388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1177ea0c3ae25a19d227150f13cae51bc51e75abdabcee31f5a93374e0487f. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/DGA0R2304074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357ea91bf30319993ec7214a75e4dac8494c8f6df5feb4c834ce776261f909c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA0R2304075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaf320b3a99ff8a741f52c3619473da3d0b26330622541f7c5969e17cc07fbd. 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/FR59R2468785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab51388315f8a03a935f4917555defb366c39be2652ec1e81a29688143a22bd4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FRX872406966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e26ea7ab2c9ed032dee6eb611b1e3b31e0cf5c3a39fae463cd2be101320453d. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DGA062432650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe137c571883279fa24f694d4c1dc42bc67ef3b4e2f59a8c26ebc72558612c8a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/EGA3L2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732fe153cfcca36c3352befaf955bb5d0a011eae865be072fb3b922273a704c7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/EGA3L2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaacc687991e08345246abfefb19ff95f2c74911e4ab564060d49944014fba73. 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/EGA3L2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcff380a4ea52087434911a5f8cf32e9bd4b22333aaa5c7acf69aaae52818d3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/EGA3L2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7490767f7d9bb255c2f007ab5871bc3918369e346c4647b4cc52df73ba4b57da. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:48:57Z), 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/EGA3L2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3503dbcb10a640d90b503b1c90e9f9e43c23ca853c21d29b449333c58bba8bf. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/EGA3L2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a20510b98d8932a1990b41fb79d2cb051162ef398a4a6defdd0b9ee21ddbe4. 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/EGA3L2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cd6865ef7fe0a262fb4e9443f331fda0ded3d0537c71540f67df14805b1ec. 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/EGA3L2400019.