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 0x7af5fa376922defd4b137f475908b5ee0bcb60a18411a700b2cf8448916a1b23. 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/59ae73a2-dbc1-4a33-a0c7-4591fb85c7d2.json and https://artists.proofprofile.net/proofs/artist/59ae73a2-dbc1-4a33-a0c7-4591fb85c7d2.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 0x91f2431d5828e78cab0b4cb4ec4f8f4efaadaf98a793ac0ad70a2cb40d09732b. 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/PLB179500325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6a04089483b4a934128d9cda80f8efe3c8051cdc1428afa1f3b3c26b276921. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/PLB179500329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0e0b963270fe4e48b7956e774ef5cc28db8e525f960347511476f08e08eac3. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/PLB171301729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3559922f0d8953409ad479fd513f4f1d8e737fb0366f629b6fd31971ea516e. 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/PLB171301743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0bfccc24406546c73c607153944fc5375f641fb7c5012d8401cb6d2d80c731. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:03:45Z), 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/PLE781300474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebd422dda25c5a22118f12b520d39182d1ae0f5eb45a16649c1fc06a2ebed3. 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/PLE781300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21599f330f99c7a50116447271437903b190aa9e6f7c803609c3803da9e5be6. 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/PLE781300479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a702720c4bd14fffe2f78926213136ad7bb0603062c1144c3197274619579e6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:39:51Z), 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/PLE781300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e591f32dc0e08e27186853b19205d4ecde46762b7ea90d8e0ff21088dc4481. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/PLE781300481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1580970cb02dc900b5c66b21606f2429b36f3cfe7140b56fea0a11b34c6ebc02. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/PLE781300484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6967a0641499b1ce6f93cc90a0ea364db27d9af74c621c1ca6d7ad868fb4fab3. 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/PLE781300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1320e98500b13d5ec9ea5543df946dc457a7c81eb6d263e54ab947b885b930. 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/PLE781300492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebbf6ee0eb053d33f6ce2b8ac5e32d7ed6810a38b581a10b42b4cb00d322a57. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:53Z), 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/PLB822400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebbf6ee0eb053d33f6ce2b8ac5e32d7ed6810a38b581a10b42b4cb00d322a57. 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/PLB822400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf4ece84ffb345e599d41236186cb8f070c31d46f2d52f285156279636b1412. 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/PLB822400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48865ca90044e02c6330fd9d890902c11651e4b5c91bf8dd9a56c807a9475266. 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/PLB822400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0431c83e3e96fe16a77b0e9be6400820cc0a9c3f431ef9b920d6a0d63885094. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:44:46Z), 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/PLB822400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749f6f3bff50bdde96785e9ba1840a08bbf00097d9b077b53d68e0a209d640f7. 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/PLB822400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186789a5c419c9a8f2e9198d82f2274d5ec9537554fc7d641c68d5a74ac9435e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:27Z), 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/PLB822400265.