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 0xc0780111fdf15542a7b6b24ddaec9757da7ce5ce5ece4ba8e3e25abfd6c0b6b7. 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/52fd3c31-e7c2-4e91-a58f-92568da6d295.json and https://artists.proofprofile.net/proofs/artist/52fd3c31-e7c2-4e91-a58f-92568da6d295.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 0xad64efede2cb2ac7b87817a7f234c48550706f27300b899233c9507f823fb2ee. 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/GBLFP1883766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b6274e48d91e232c296f58ef8c0542d8b2e504eab295fa8c2f0710f0adabf2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBLFP1953105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872caa7c708724d83542583af5d47001afc656e94d9662c45f298ace62ab16c6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/MXD782002733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008851aaf0ea38e4d65f638eba15e312dc96162f7f5a1d96c03a78350e3aa3a4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXD782002736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838ae3d613cad965bb8baa525f1f7c77ea1b713390ef93ecc5f3ac063fdfadc3. 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/MXD782003172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb821fbf64d8382567de274a8748e2cd556f96afb276f1664bc18fe6c6d649. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QM6MZ2183282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460ef4239b6a473c25795e52de839214cabc6cfe82188fb325772a8204b0dd4. 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/QM6MZ2183031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523bf2df710a78b4ccf93209547db00fb2792360c043d2cca2f757ffd4030ec. 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/QM4TX2353141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70052f9a9d37e1a0483726e0bf9ba02d4f1df73bbdd9d0d0bf6c787d389defd5. 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/QM6MZ2316391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8e6d7a951565314649f5a70605c510e287de4a37a0fb98fae7a81fccdfe9f6. 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/QM7282383451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925ec276e1a07555422f3ce603e28bff45f2e3c6d17e2ec51f74f375f522c5a9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM7282383539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70052f9a9d37e1a0483726e0bf9ba02d4f1df73bbdd9d0d0bf6c787d389defd5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM6MZ2316391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf73f51750ec832d8a735aef42711eee8398219949fdd0b6e04d2e757bd2b409. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMFMF2305471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ba3bf2cf7f72d64b6f679affc7ee3794a2345a435852bb662d19282d50827a. 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/QM6MZ2316434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523bf2df710a78b4ccf93209547db00fb2792360c043d2cca2f757ffd4030ec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TX2353141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b13c7d97b8faded5c17460f8b2479128c640a4f89bf58d53ee38f2090fdb90. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QMFMF2305446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8e6d7a951565314649f5a70605c510e287de4a37a0fb98fae7a81fccdfe9f6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM7282383451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443593db42b34f9994846723441ce482456e0cb71c5875aefba95266e34a6a0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:23:29Z), 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/QM7282383679.