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 0xcccfee1faf4a8d49e945b0722ecd89a2223876c968999b9d823ff24b9020bd86. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fe78fec-ab2a-4497-bf7f-88b7ca1636c7.json and https://artists.proofprofile.net/proofs/artist/6fe78fec-ab2a-4497-bf7f-88b7ca1636c7.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 0x478f8daac93ae83fb8a39bb3fa50a07cc7c7e7e900db5300941496737b720bf7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2d4773f6f357d5fbb932daf82a3c09df2a20ab6ec17509753aa7cc1508cb6b. 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/GB8KE2500498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35c5ce4005c8986b54e8b6238cba929584eee7c022788de3458e472be7d9dd9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2500496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dca5a057dfc3eb60c36046ed2089051276005be27de6b7ef5c0eb7eea527e6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2420719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361afd5975514c3137fcf7fe1078214225c5f6069c7140b08c06d9ee4f686df5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB8KE2413718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5044699231441ddae7b8756459d17f3dae8b1a646d0f37cf52e6a56e09712c51. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GB8KE2413719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5591eaf3a9763a3094c8edd0ae30d4a7999c24bac56d8ab90fff4ff4b0b841. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GB8KE2407832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a35bf1ba37bb676014391fc038363d4ba14254051e8b33c35e24fce9a163752. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH5562300385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6ec0e76c9be4e5b67da33e8799440218d76a2c602c7d356179842f40c305a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK42220688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a3807a1a4f2b9e231a290423c862be6a0130ac5ec5093abba2b057baecfb6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK42220696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ad41b2bb50d63b8bfd2f9147e3677f312d77b32424b89a6fbb89487fcc40b0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEYOK2433443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397acd76f88f1a4a1724377f2662c06acf6242df41d9cc1fecb049b60e30ec0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYOK2433444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd96524b78686137e16a253362ee0b5f9047d6a926f831ebdf6f767b955e7595. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2502127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad5a12bc9b28a870c26bc977780a37ad53177989f526b44e8dab63e723b020d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2502129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f04d64c9be330d409390782353eff628583b97bd4939ce81a3fa735ee41f552. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE2502130.