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 0x44c56b9631d82868a9453919421dc22a6f0aedb75573092d2c3a50b6b23be653. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47210fae-4b5d-443f-8c14-cae56d2bde0b.json and https://artists.proofprofile.net/proofs/artist/47210fae-4b5d-443f-8c14-cae56d2bde0b.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 0xd157dfd102d4b90be62e28f1a4f64b21e4ea736da3335c4ff2b945a129b78cfb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROGRS2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae4930af5f97d594aef02cf94844bc374029485dc12fd739b8bd12df37c7c2a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ROGRS2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538ec09580ae630b5fcfe2c156dec874ee6c5ce4d309122264d31841c60d967c. 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/ROGRS2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82d35dbcd379a0852765b50fca82053d3dca9e2910849a22e93294b4d4e43f6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ROGRA2400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb0c98353864a7a32ef510a68d0abf32edce49ba4bd29cd6f2f1c04d774f360. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ROGRS2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ab573f32dd9fb9ad154f30d84285964083ae5f9e1e7809a48a0e68fd9e8498. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ROGRS2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb0c98353864a7a32ef510a68d0abf32edce49ba4bd29cd6f2f1c04d774f360. 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/ROGRS2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d72507abb752ae5009955d76340ea655e2647e3ccf4028398f83f808ad775a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ROGRS2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbad5122ee49aa6fed70c4e146f204b7ba7026d3f21cfe3a72e074f598f8d210. 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/ROGRS2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3155fb517a86d0d299f6cd036f4f79ec84684f401ef6588491683b6f1fcbc2. 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/ROGRS2500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428c26218501955af20ba40f8b0ee7e805370e315d95d285530282335e11703. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ROUM72400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c834750289ef47a84bdd64d57d96ed54e27f18f47619ee4acf53429bb917dc. 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/ROGRS2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608979523bee16fedba3ad1ba1e8faf8c9e7d8b82f928f007d9cf7c04ecc907e. 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/ROGRS2400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d239e2ed4cb9bd44b7c91ea894e0d54fb6737e49c959b81959c97389a77f8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ROGRS2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c834750289ef47a84bdd64d57d96ed54e27f18f47619ee4acf53429bb917dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ROGRS2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608979523bee16fedba3ad1ba1e8faf8c9e7d8b82f928f007d9cf7c04ecc907e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROGRS2400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb72a1a257da4200cc1f1ece9863329b982f9bd8de413ab468ac25c7c1ad5afb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ROGRS2300088.