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 0xfe31cf85bb2da4e186d27c10e8076eeb021e7c93372cb94a10662b7ffce4eb55. 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/3ced9e07-d4c2-4594-ba23-f08a14e7e567.json and https://artists.proofprofile.net/proofs/artist/3ced9e07-d4c2-4594-ba23-f08a14e7e567.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 0x859f0eadcfc94cb4126d37237dab332926c629f2f00fd2104b8aa3d19a599eb1. 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/DELJ81607875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511ef119389dc9fdbf8980da80f174b7a540f550762c32407efcf25029fc570. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEWE31800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ef1d054c1c4fde6bb1ffb2b92e7a2eb0d1d8117dbb07e04edbb6e153d38b01. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEWE32100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9feb4d0620fd57773e80d8481618f79f14e12e1c4bba71e9a51a9ce7242b8e5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:33:50Z), 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/DEWE32000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f9b82ff84951ac346d3d2bfdd07815cdced463d5c70b825158a03b620fae94. 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/DEWE32200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf888519bdeaf639d1e66658ed6fd9b0c53f38e57c5c08c6b11a49c12065f8130. 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/DEWE32200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37611847d49696d40d7d96e40f2898f028ea0bd6ddeeea723af96a157f89ea9f. 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/DEWE32300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925412b1e6413d8262d560cd3b2606334e0fc7556030cb2537ee6333cb779709. 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/DEWE32300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072bf9a9477c5b1707e8d9682998ff5007d2d76c464278a70c9d29c7b4f2e75. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEWE32300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6956630cefe41d08eb9337dee110bf19274f24ea08a93d066944fea17a2c6bcc. 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/DEWE32300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a819de052269ac5f8c78afa01584a93dcb3cde5247863ea02ae61d817cb5d0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEWE32300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25af17e09c969db89987bc1196406891b0bcc082630d99f4f1496a1e1713e693. 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/DEWE32400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749d2c66f51eee39cb21389a07d09eb37b1fb5b718cbe5fbdbe5808c6882472. 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/DEWE32400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8303328c379cf97fbfb750ed8e0260ef167fc325d717e86d02261faf64aec1ed. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEWE32400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cfb66f9408e2503b18e95b0d49b3dd403e201d153675dd66d08375a5e7c66e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEWE32400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca207b3cb6a04b698086dfec5c4aa8946456c6903f644859050c524801e158. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZC62508075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7d61c62bd8571a8ca8d07f6dd83ebc537be9edbc99c706559687d15ef3b56a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEZC62513350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5e074e6153d23507a30fddcd65a54784431b5b76e4021a6b42f224521c5aeb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH7812357775.