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 0x75e60122a9bebf0633a7b98e601270545cd88939f0bf32a29ec22358a2b0fd06. 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/f24bb054-dff1-4816-ac92-5b73b50554eb.json and https://artists.proofprofile.net/proofs/artist/f24bb054-dff1-4816-ac92-5b73b50554eb.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 0x82105cbdda096df6479208935b403185fbab83c85b4543a7079e4a4e43b8abb2. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZARB1893450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc32a6afbe422b978d767f546200b88cebba5948f2851cb48c2f9ad688586ae2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITC942004284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb84fd389c40e0c24c4d40ec88a152222d8ea599af8cd143a6f2a38d5b16fd6e. 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/ITC942004286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96129285a0a30ed71207d752a894e918ebd330e6b8d4b1706819c8db04dc2c8a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:24Z), 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/ITC942004287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd347124b631f0047aa15a1922f6953629891f013c877df1e44b6f6da27459a1a. 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/ITC942004288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6e92c177fba939cb6a289343486a47c98e4a09ab825dfdaf758a1ed3ff58c3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:20:33Z), 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/ITC942004289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc7edb0657e3261f620ccb1a6340554c0b7e25ac6e1c5ac08909f6db618e90. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCADR1847334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eab2b4b5b6a8d035fa91d31f7d8b905bad2fbd8c1eccce754980fee9d00b97. 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/ITC941925575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a23e0b94697c8e8748b57562e233b5b7d888fa21bfe3001a1f2c257a6b3236e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:24:21Z), 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/QZHN42106766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e9a1b43688657fcc4ef981d2447e2d502c6997b62990e30e452b5b8ae9b483. 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/QZHNB2185073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0013c7f9f080e75b0c38306d179b27998b02edd73b8f09674773d7adade2e92. 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/ITA3O2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3845975602af6f780211f14d24601b595ff65176339970420f68f3bf1c3cb58. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:55Z), 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/ITA3O2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6205e4bfe05fab969298c24762266d71234432f1e1fe469f836796e9318db7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITA3O2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18260e7e6efa89c91fa312332ade3e313468a95796146ef48a1ae0c7b785197e. 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/ITA3O2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3046bfc190cc188172b520036bc6dbe66ef2b4456ecafd3229cf1b1b7958876. 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/ITA3O2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686a8ea7824f98160b269b5ae19f6712edbe52a9c797ad690f8f5631cb420413. 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/ITA3O2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9190c4d45bb72d17263e4963034013091e73d031db8df748e1f443ecd3acdc9e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:22:42Z), 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/ITA3O2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69539926649413451a99cd4dbde39c7647923a858fdd1282a03f9a887c4442a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAER2071781.