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 0x13e236616c44d8b850addcece16b58887bc5f482bf638837d567704aabca950d. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b560c30e-b64c-4719-860b-7f3abe658c41.json and https://artists.proofprofile.net/proofs/artist/b560c30e-b64c-4719-860b-7f3abe658c41.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 0x489091093a77a494d92575a5c31554af0bc98f49cff85606b13e3c1cbbc97aa7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZC62409743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe86e83ccb00a3f557fb9dca2f1a93b23c5d16f635fcf869a3ecab8f3dbee7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/DEZC62583366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2b4cef96f777bdc49c2501b6a8742b06a91795a0a59bb7dd496e83add7f5d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZC62580960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1867333c08dac6ac3926559925f163983da72d58c134e8cfce6aa07061a46881. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEZC62580961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f63ddbfe6d2988ac7fb0768d9baa77e74c5544609516a4e076a820d32c19208. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEZC62580962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fe5f1821cbf6782f199a30596e503ad7e92699f0d39fa034d197d01e1a76b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZC62580963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699ff6f3a26605f073f308971cc76b5f712216dbbcc1db440b22fbfe1a23ed09. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:06Z), 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/DEZC62580964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14606b3e711a3f88b6c4f15f3e254656cd5aec112f45cb3a279010c520e3787c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEZC62580965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67cc79290d7b1c3245adcdfc20c423f2c4af6da4bac8d5e363cc0d4078b08fa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZC62580966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414f7475c46ca44281d24a3cc177faf9c12622f31d37c3f071710e3dbef0168. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEZC62580967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d96a987bfc9805a68bdcbb5e795468fcdac0e553b87606596f83a3c13a1cbd. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:52Z), 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/DEZC62580968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ad9249a339f617d03d4206283dddfe48b9cb6a50c03176485218897be9860. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62580969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae943a171b59b45f0adbafa1d9a12a7bcc14dc449d50058c6402402549ca6554. 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/DEZC62580970.