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 0x308a8f8d7dfc17930e8c0ed179068afd3f4d88754cec89a603bb8640fc94c09c. 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/60da4f15-5f02-4c2c-9d09-d391cebb20e6.json and https://artists.proofprofile.net/proofs/artist/60da4f15-5f02-4c2c-9d09-d391cebb20e6.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 0x5f82c1ac79bf4b7d91bf416a8450d062b5abd06477245f9c889a17ec65078aaf. 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/QZK6N2262969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b26a09d4b9dd12d30edb1457154070c2b9ef708bb7079a03b88e0c8e3855ae2. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:20:57Z), 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/QZNWR2279385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe678c31e650e0b89689f23423b1f1b350276ed280afb5e90233f0c2060abb61. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWY2222979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35c69a71b90bef79468bfebf68b723749bd7162ed24d67543754cd633626a74. 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/QZHN32311032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63e4c91efba2ccfc3a057868ff9a3c96e543d56f90e3a7f2c8e681571bedc7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/EGA1K2402932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efa580a66fe1419b5202e1e91d9b06b669185c04d41cec86272982b496c725. 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/QZES92442285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b0caaa27c95a199a734e850697009519c48397be48f9b8f3ebc40b60eaaaa5. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZK6F2495638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b85c8ff974091ba75891f9f7dc8e0dffc6789a934d05b16492f1134f026b916. 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/QZNWR2452075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc1f2863d7df94907d5b111924c036e4a3d7553978924115c3041fde39f2c30. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:21Z), 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/QZNWV2432946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1fc9abba29adef5b753c72d557bddb9ece233c7a89715a9c331229433e90aa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWV2485096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4982697a02a9761362a478c84ff79da82abe35f1c09e4dbd4cba72cb7b3b1eb8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/EGA1K2402937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2786b1cbc647f106cae65a7a2e7e06679f892890975077213538d3e065a5ccb4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/EGA1K2402936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4922eff055117354c2c6847a4d293f878995a388c9c0edb6316a5d6e6af34279. 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/EGA1K2402940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d893a7202ebca620a6263e9c754c940aadc7a1434a2a12e7a74469044f6f72. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/EGA1K2403063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d893a7202ebca620a6263e9c754c940aadc7a1434a2a12e7a74469044f6f72. 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/EGA1K2403063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab1c817e81ececfb53fa7a3021baa1c1714dd3ff324e667605f2f9ae36beda8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:27Z), 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/EGA1K2403224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f547cdb406a9daad11c3b5bd4b2b55784e51cb7f7c17520b1a87dce4a89476f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/EGA1K2403335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b6cc0309ec44e053beb6d1ecca25d7aeef171c8918cbd4567f55c16815e88. 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/EGA1K2500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa816745cef7fd4f804cd56e3c4e75eb2640ee9ece8f51dfd96e8d1c3f73e5f60. 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/EGA1K2500726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466f8613c5b6e39160a8002e361c1e4b8d507920a9de172437929a5cafe2b1fa. 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/EGA1K2500872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b8794f1cb325928cbb78b473b96c4d20ec9d29ffa4655f5ddec8262bc21069. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/EGA1K2500987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f04e908045ddf960e70729dc0722f2782a0654a8e8e6269e53c3d122aff01c. 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/EGA1K2501141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c84970cfc78f78fb30ffba7701cf20ab382c1fe8ece13c7a8e6ea74275edd82. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/EGA1K2501207.