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 0x542cf4e18f558e5376a5ad99e0085add68809f8830400a3464a7588ab8cff6c2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07f13b73-0681-4812-86bf-57374ee3e4bf.json and https://artists.proofprofile.net/proofs/artist/07f13b73-0681-4812-86bf-57374ee3e4bf.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 0x663f38568521e12758502ff6dd9296a9793c10ef7396a644e807e0c7a95ccb37. 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/ITG271800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf297506eeb425f2f2f830fad4ca55a04d1046c6c1b0ed91e7fe58f8092a1ddef. 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/ITG271800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33601109eda8246c339b65c99ca39d5aea67ec92e22f7025d65d45bfad129eb9. 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/ITG271800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042805a4a841209c1fea65b6b475e0e9ec3a417ec4d53fc1a205579f9812d101. 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/ITG271800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1a998a81c4b0f88a83ab71dd39ad380f658a45a58435221636e557169e0ce6. 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/ITG271800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6627374ef4312dd82847a9c8277e6df1967549befbc7d4c6a85609b6ef6e3. 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/ITG271800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3979a1283a12db4dd53bb135265ec859096f890e7494623e47a0eecfc77b373. 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/ITG271800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e59b299e1c8e3439d726bbc07671b655d5c593b6a3afd8ef32542d331238b0b. 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/ITG271800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb450e9b0d9e0d7e672658537a2c34c25d31ce12985f84487c9afbec2b0191502. 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/ITG271800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3d054e4816ec7f6cc7eb8ad3c26dd2b9793fdcd3fefb46c3f8f737e4a13ff1. 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/ITG271800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5c7fd7a0ab67a0b09529b39e9743968089c862d36911dc2ca381a7041e548c. 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/ITG271800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34400e54d703e701625e271ba11c063e6dc52ed520fc2411799360550281af2e. 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/ITG271900329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72090a4a887f327a07db5384a80d48693b5357f8c688544f6e932e08d56546ba. 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/ITG271900330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e2b16524e8afa7b3d77787c8d770c48e5e5992e44beeeaabe349a8f1f478ba. 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/ITG271900331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499eb7a685931acf56e682803e33b78c2c7fe8f56ec42aabf78b96290dc3902. 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/ITG271900332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33601109eda8246c339b65c99ca39d5aea67ec92e22f7025d65d45bfad129eb9. 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/ITG271800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6627374ef4312dd82847a9c8277e6df1967549befbc7d4c6a85609b6ef6e3. 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/ITG271800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf297506eeb425f2f2f830fad4ca55a04d1046c6c1b0ed91e7fe58f8092a1ddef. 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/ITG271800164.