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 0x2c6f879e4af4c433a98f2f2d26bcbb24f68fc42f0402f94450add7f89c923fa8. 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/e63a3c7f-d826-493c-a2db-bf39059a0d11.json and https://artists.proofprofile.net/proofs/artist/e63a3c7f-d826-493c-a2db-bf39059a0d11.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 0x683dcc70942e15f6c58884c1ef09a996341b3c114f724feb5dbda913aadb2137. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZHZ62241135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8065254d06dbf4714a74fe1324ea02bcc2f905be1ba12b0cee4236bee6b9f5a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXIV82293245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a208c245fcf7c8efccd4b122bb110741bca1bbbbc0baf7752cf4a0e42f9b35. 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/QZHZ42240476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5422c05d60cebb5df6684ac872bef18a8f84fce4a6ab9f139ae0063d45e8ad. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG2318643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6600fbe90225e2330bc8078424e896215f48d6418446cdc3f7fc160a0629fa1. 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/QZ5FN2511926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3d0843b8b36cbe7d65ea3c94524a6635056c19178e9657f9d6085d0b0a0136. 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/QZWV32466035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399aec61c1b9d064dbd2c6d1e5a2112882cead526efa606c2a7c5cfad7b1e87c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJZ2412061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1ba90c6aa94af1032fe2ff0f1c4812b4ea7500dd0963efb0f4ba432ba474d1. 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/QZNJV2282850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e5eb09a17f81ff679f9b3cd4b2da73038f357ab98447c8ad07d9f4e8949f6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTVM2205460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd40bc5015790a796392e35d0057fb0782594fd797a2b6cee3b879140d7e82. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJZ2241233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87926bcb4019563bea3f85b2184d2b466caee1082afec8cb52981466055cb42e. 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/QZNJZ2241234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faaa9e90948ec9e3d6f8b0524148d4ae565f99e18e7e4fae79786b785d6b022. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJZ2241235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5e745888584780362591d29a9642707d13b3be86f9179301f111b67f58d20. 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/QZNJZ2241236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68c693c4913fcaafa89299e90711320238d2d330697df1a8a75e91053a1751d. 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/QZNJZ2241238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978dd4a99251b99265df42c499cc7ae0611204ecee45e1694bf6ad9fffed6a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJZ2241239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efb83dfba984514b083e4bcd538cdec64b7c8c1b95157c15473120f5e617384. 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/QZNJZ2241240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6c22179dc0af31164beb095eb4712039956bb8840baacc5f8d131a57ab3113. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZNJZ2241237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39b1d4f506cc321e1390e57e0b684c747f6ee9cf899a7ecf86793462550a99. 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/QZNJV2241771.