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 0x75683f1b025195bca4eda7acb40351018f8e981ad44bba2a287d574cfab8d667. 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/b2968230-a383-422e-9962-559c27cc19ab.json and https://artists.proofprofile.net/proofs/artist/b2968230-a383-422e-9962-559c27cc19ab.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 0x6f212fd9c77b7925d3f79fc5f3cbb67a29e718b498c875631a826c20607efb06. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2P1847552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29844584e05417deedd92dd18d7387771e0617d34f8138c8124825c6260f8adc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU5796738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b114f27c27b6d944c463578488e1344c95242d28c71f75a3991d06c6d8478a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:10:17Z), 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/USA2P1896116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9beeddf97e94ad8e31c0c7be501336be0d1d926082c67b05dd5ca5a60b23af. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:44Z), 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/QM4TX1993147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909966bb3647f63e14a1fbd0de4addf302dcf0c520464242bb2c603a3039151d. 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/TCAEG1946311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1af74603604758ce50abc7f5f4deb4e8ff00e7cfd9ffa25f9049f540f53807. 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/GB2LD2410437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd743b9795dd2cfde536fe2753ccee027c7467d2cc32e27fe275844c4a07a5c6e. 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/GB2LD2410438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaf22948c5e79fb92a463b386e9832f8f2726d0f76acf48291551eeaf96b852. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB2LD1900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5856961d248a71c44684a0d04effb9470265d38625667e80eee7c7b4ad3c1f. 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/QZHN41977467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c81b96651d139e0a168d7ca0614524f0cb25c5875327ba8fe030330edac2d6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZK6N1974626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb09754d975936feef04b69f18085796b793010b23ddb6cf58c3aedacb3e57b2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBSMU7603503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4453c7671678800ab6aa4d2fff4d5aa2638cbd28d89f1900d4dde2255e7594e6. 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/QZDA62007287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a0f50db728b322d525cb5a5801c09eb61d4d744ee72af3a73888feec431ac. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:05:00Z), 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/QZES82074366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d47d08ca92a1c4d91d78cc1874c802ff6de5369682ea310ee79d6355923ec0a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZMEP2062269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a7ad6442a7ae9ac0d09ba86a5f23e55a6e75c12bfe8b2ba0722b3b8aff5d6. 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/QZNWQ2005209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b0bb1c17ea1df8f3c330834d3d4904c06efc3f9c104c37f6fc6d6c9aafa244. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:27Z), 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/QZPLR2105835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da0894c678048728ffd76da072337695490cfedcca0929d9aefcb164a8e946. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:25:25Z), 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/QZHN62210529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e2163cdb89e59c61d919800f5d5a9b81a6a0dbcd8f52de52857a418eb2c7b2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHN82274287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e5645b1be8655b3071b463ef2119a0d35b2a37606e6c3887b191e7383039e9. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZK6G2224129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc3b979ea289c5df612416c125dc845ec9e0f21524bafe4424e535dc4704974. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZTBA2391996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b2b634640e712c3f067effea6b69499ef8a2c359110f775162b6ba13808f98. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:24Z), 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/QZWFK2399082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7423d74ab3f04acdc589f9b0e1490374576e58038111d2a0dc3911f03ca9a51. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:41:59Z), 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/QZMEM2407772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04150b3f6cdb3c6c3c7ad43a41e5eaf9dc369024fa4dc0a8db679fe7c63b4a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWS2409266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70744ea61b8613c96d4b1fa5bea19e903cccfec4b63f9ea7c62f3f6feb93755. 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/TCAED1965498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f061c3decd36dee5393898dc0606a886af2d9169af2feac860051afef164e. 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/GB2LD1800823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaf22948c5e79fb92a463b386e9832f8f2726d0f76acf48291551eeaf96b852. 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/GB2LD1900240.