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 0xf3e04bfa67074aa0c1425fc48aa6b3bbc2087d1e4ad1c91d58e182798048b87a. 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/57305079-12de-49c8-bd5e-faf3228a7857.json and https://artists.proofprofile.net/proofs/artist/57305079-12de-49c8-bd5e-faf3228a7857.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 0x62dedcd823dab238c153e93321eaff6f5e059bd070717f81de13c3173d2fc967. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLV62200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5b562a86ac385acaae19c28acb93db292a5f73ddf652556b8d2f1ae095aaaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL6TC2404002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf424d72759b4fea99ccce4d1338f5cd7935ad9a386f0817d6a59976cad351fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2457134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6462e8c395cc026f2d0760fb8fd8cea8cc7879db5de428df2ca0753343a3da01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2441693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ea7f76e29f7889c4d634357b3cf04c4af25ddeaede846fc89b4ec3272cd159. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2432817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d40249b82f48559764804a22d002523b7aacec770405064b837c5f34d93fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL7EN2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7b693a91e3561c9a5064841e08699a7c5eeee900250ee9cc511e49c3febca7. 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/NL7EN2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca80970d7079c24a1f2f42a45a1dca04a9d0bb3c3bdce7ecf5d5ef1ee3d60f1. 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/NL7EN2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9344a8784f9b41f1c57ff405da9d70e0a04e54ea6cdac56e7f8f196f7c1b9dcf. 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/NL7EN2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de91206a626f2966cbccca318e242299fd089376dbc05ce7734b494b84aa8ce. 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/NL7EN2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b09df3d5226e889e298063dfc6c1ce93a0ec8e65d2674dd81a82c20874970. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL7EN2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c80d5ac0ee54fa0713981462e2efd3860ec08550faca2dd861dcebcb30ec9f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL7EN2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76275e2987fce3f11de04be211cdd2412283aa19149e3db80ad32cbd9c4d8e01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL7EN2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0089e95fb87a59ddf6878472a53ef5468b25ef7eda9fa27832a8e2bca0616d91. 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/NL7EN2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e5134a1d06b34478224d84a23434fac21c9b94db97c60d2fc797a4de3ce45. 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/NL7EN2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035f7184e6f4f60bf3b9e08c64e44abb89c8977fe34d63eb9ef7b83ef2dc6d9. 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/NL7EN2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c75fdd218fc4f3641e195d907291f70677454141bbd81b8880521923bb6290. 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/NL7EN2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3a8be4dc2e67429c0f9d80ebf224daa0327ec40fd1fe6cd7b894d6dd11e814. 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/NL7EN2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b15686f88522a26a9b196388303b73e46e22100a821aefefa7bb2a623d182. 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/NL7EN2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78db63a6cd5796c890e8e55631f15dd35abf71ae164b5d565c75411c23067a0c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL7EN2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3663ece29bd30ad32c964ffdc73eac63a3ce14fdb9c6ab674d1be9b3c8b651. 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/NL7EN2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f8734253ec6862db888654071b1cbe972cd1befdbc625cd040ddc53d162bab. 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/NL7EN2200034.