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 0xac50d914e37b06caa91005a5eab9b9e44fac8985efaefef669b4f5b443b00c3e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb502334-64ce-4260-b94f-35c9c81ce53f.json and https://artists.proofprofile.net/proofs/artist/cb502334-64ce-4260-b94f-35c9c81ce53f.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 0x6e67351cfbbf77c0fb33c5f9e8bd4045cb67dcbdc7570cbc5a2752f80813d290. 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/QZWFJ2322847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d0953aec7e8ffc92e30540c9a778f335be86f5146c6665839a2e14dfb01fb1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFJ2322858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d669aec15b41c9447942a7ea16ac3f9a8077afcf1bf25bf989e97996b143a0f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFJ2338421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0941220f6e17ab00aba461e5aef92d2f6338726be200527dc1bb3cdc5df695ca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ32418217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c46f2dfca0160c332aad20d7ce5758963d6302c5b43b2c6fb8b255177228464. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZFZ32418228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5dba10effc06b7681f7f6cc6f83ed688068eb63755e6d55108104ae87dbdda. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ32418215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd9cfbe366d9b62f3bbe70671daab35ec96fd0baf768ec3ebdd3c18af8d2e43. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ32418224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf47c92fe4d9dc7cc3b154a8beb396a3f74d41d4df974c0c7f96ff7d7460f86. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZFZ32418211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b246bcfcddb6ce3441c87a741717580bf67c362d5d51d7213fcb478514df88. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZFZ32418225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066ae318355b50c0cf0d6629c55840c7e01a533620054f45a653022aee5ad191. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZFZ32418213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf11308c1c305de7d3acf403236036e2c406c0320aee5638a30cb89412d0b99b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ32418223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf695e692b92a0f166a9517152bf9134af8d2f462b7f47eb039f89f1a2822958f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:53:46Z), 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/QZFZ32418226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d3a92c542868e662aead2e6c8fad743283d4a108c99f13de0f0fd7e55dfcd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWQ2415167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab7d4fcc3593abbc8d281aa91873dafbce5502fa9086b9910afec1901d175a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2415188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd507ecd2332a74479d7a04d105714563841d75e8e65226e1da6dc0d07ff2b7b0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:05:41Z), 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/QZNWQ2415187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9ad9ef2843c1ce4981e3a856da5fd85f8b37b55ed125c17bf71fc7a2bb7a9e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWQ2415193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f514a57bfb3d0334d22e7c78fb7204cbeee983a148ec3a3730b30a25dad00d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNWQ2415183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e98673563440396af130ddc089bde85a02008a3aac3e07c34bb57cb1f9095. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:15Z), 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/QZNWQ2415170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebc5b1c99c0633eac72e0abde2d99d37842804a889bd894b2eb46738796602b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWQ2412747.