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 0xa6cfdc9fcddf6dc9871a47b1094df580de7c9d281b36d29613c7710f01e55828. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4afd2ad-b69b-4ab6-a9dd-dfa4fd6d8470.json and https://artists.proofprofile.net/proofs/artist/c4afd2ad-b69b-4ab6-a9dd-dfa4fd6d8470.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 0x42b2a07d74d58c7baada9cad5b282ac780217f12caf732f009d612fa358d6da8. 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/JPG102200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1279cd1f45eedad4f454a2dd254772224966b4db2013678e8c514b53a11acf9. 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/JPG102100984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d95ea1fae38ae857920218ac917b54bef7ff238d344da0a37439c7bc5603c1. 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/JPG102200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd5b2de9daf631b7eae97c3338fdef45b4c5d8057f84f3c436bca8d618a668. 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/JPG102301340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9df46f1fbc1cefa5d3aadc01956927e3506790f5b840f646309862468b81e3. 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/JPG102301341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c3020d3d5d335ed1228b54b2e21c43656cc08958384fd31079c34d4e527868. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG102300941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83621e0989046848e5913424bc5c5cc5657e45fdbc3b2ff44e1f3b1cc5d70c39. 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/JPG102300942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3993f08515fa53b765336bd054be4c7b8c80b81ca52316b204c466df45dbae. 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/JPG102300785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a090e82a94f81dccea718dc1d5638a23fe9f615b57a5e379ec51b1ee9eb0a9. 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/JPG102500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f1a1020e9ebe04c91852bb6be02e2c9dcb146f18cba77e4e0e343820fd9976. 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/JPG102500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae921f3603f3f2ecdc8244444459178d6918d5a1e19ab73e6be3450b7e5ce7b. 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/JPG102500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648ea4dcb5becb6368365f04db9b6b74e97ae9b212164c72fa0653beb9344277. 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/JPG102500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ffc44966ee4df97c0a32f5340855892851bc0a520b73bdeac840b7efd9649f. 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/JPG102500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed283382516c56ee3bc16fea029cf166ef0d7cbd7fafe3c1f610585f8dd594e9. 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/JPG102500315.