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 0x8cb3a1f898e69a1ae2633deb92718123d40ecd18706601aefc11cee33851eebb. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a11219a-9531-4152-9e0f-e70c44aa6085.json and https://artists.proofprofile.net/proofs/artist/3a11219a-9531-4152-9e0f-e70c44aa6085.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 0x6580ed2f08e6c850b233c49a212ecc8fed83d1752f2882212b8b8dad130c3399. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:33:01Z), 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/AEA140504583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212883198d90694305f949c562aea45f9d94dd2175ae40fb31deb13fcc41244b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:56Z), 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/AEA140504582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac41c3a1a794ce782f7ab5c601ef32e9ea1329c4c9a90046246560cb1d75756. 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/AEA140504581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f787c44a82035e36524c75fac4ffab65bd17e69914cd4d79e05150f791f9284. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AEA140504580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3271dba636c65ea2e12f9aec2415b12f0a52a931c8b5a126eca0438718c32343. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/AEA140504579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b5061f6680b1361117eba57bbb5fd28f1165600e08a2de74587b3235c6ede6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AEA140504576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e29d02a64466ff2d440e8e1fb1cfb07f748112d6964d54d5554ae998d2483c1. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/AEA140504575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd34ce0a8fa780c77077fbc13503d02cb68d0d0e3dac7ef2aef0165df2760e77. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:03Z), 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/AEA140504573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4ab778f03a7d04aa1ec1742c9ab7eacf26f2c05abdbb3cb82e4c630c9b6ea2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AEA140504571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797001f86c32d864e6c71cb8618d6bbc0a7a3f1689bca0750bbe4bdf89190a03. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AEA140504570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1d9c469cf5eef26866e5d2e34dc3a541daf9ab6077412bb37dee16f0f64160. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:59Z), 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/AEA141856513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4910debc317aa9c96b2c9ebfaec4410793f17a4e34595fb78ec0bb30e96ee61b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AEA141856512.