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 0xa46cd070eebc93a29f94e646bcb9529040510529a8e10b963913cdd406397fa4. 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/be1d1eb3-b29a-46fa-bc09-d8627d86c595.json and https://artists.proofprofile.net/proofs/artist/be1d1eb3-b29a-46fa-bc09-d8627d86c595.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 0x1493fdc6e163c7ded5d786164ffaf3d871c11a51717e262ccfee706ea95457f0. 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/KRA341766892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c54fcc34b60326c686698b1cdd3d53e056d733d05792824231b03672b3efa2. 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/KRA340910417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a69f9f587a334cb0368e42e8e9c6924d264ddb116a728b69ceea50eb4dae48. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/KRA340910419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7183ecf7a5dee8474cdd6539ecd10de883a670c599077d847cad2e7d6bea6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/KRA340910422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc01a50287b89f6a5edd1de37e68d0741e2290d3134de44db2aebd002cc40775. 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/KRA340910426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70b12f6ca709440ce168e5641e7745b16ce8fce8353ce0276a7faa6ab4cf336. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/KRA340910418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a69f9f587a334cb0368e42e8e9c6924d264ddb116a728b69ceea50eb4dae48. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:44Z), 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/KRA340910419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb244afa93a63128cdee69bba3053299b309a2d55a0d7250db7a01e0a34951437. 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/KRA341211471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ca5ea4c6fd8ba98eb3a37ba7528ae71bb53433adf8c28333e7bee9850d799c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:38:05Z), 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/KRA341211472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a068fd4886fb75c7152f45088797fdc37619429fd77f7bdc0eea77a1cbf534. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:23Z), 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/KRA340910415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69341159b624fac09237082f955a26276e786562f2ddea81c8f995a18675ec9a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRD451800321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2828d2b087d271e80221ac227e63a3d8363323c4b01d1c35116e6df859f8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:02:22Z), 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/KRA340910413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf248856b68b36f6ec9f6b916d04ca8b1d3ce227a6d216268ec17a95750c43409. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/KRY661300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1681ad6e17938a6195a95cc33e0fa0f52642c775c6fc95f7852c4389bf82d63c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/KRY661300718.