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 0x4369ae755867c9a31349dc14eb95b177fedd18e2508b4f8238a2bd5ec3849846. 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/0a6b0069-0f7e-462e-8be9-b81928f51792.json and https://artists.proofprofile.net/proofs/artist/0a6b0069-0f7e-462e-8be9-b81928f51792.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 0x8673a269be1801625d2d69e79a8e3101ee364c12083ad6a16bbd62dd6d52ce57. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUIXE1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2e6adb87bf395874a4502bf9a84d7e73c80d03b47a5819d6276982984fe6f9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:37Z), 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/AUIXE1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048bbd72847bb3a35c638ef138d79e783e691b4046d0cc5a3525bc7b4378db3e. 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/AUIXE1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c89e251d405f08fa8647e90063298f2fe04d3d7a615ced5d7689c28f7d4a49. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:40Z), 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/AUIXE1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c34de23d8e525ef47d27507d08ad9527bcd97914e0469f71a94baaadfa7940. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUIXE1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1005d1d6be99eacaad921d09b5067e73c1543520d9531c8eed5edd6e97287fc6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/AUIXE1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf384dc6e3ac5ce9a2c26c54e06509147cc8a0e2bb2121a7fd5d2bd54e8906ce. 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/AUIXE1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c89e251d405f08fa8647e90063298f2fe04d3d7a615ced5d7689c28f7d4a49. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AUIXE1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e1f0a8ad33ab511597db6b3c8b7e4e2716d24e1a36232a84a1dbe13c010a1e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUIXE1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c34de23d8e525ef47d27507d08ad9527bcd97914e0469f71a94baaadfa7940. 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/AUIXE1400013.
Eat Your Food (from “At home with the kids”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dec123a84a9b344128e025bdaec8df45cb5f2c57ee4070dadbdfe17c1c2ecd3. 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/USAT22005402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32a113f2a1187bcfa64bd450f6d25f77a75f9f7f4d9704006247bcb53790e72. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:23Z), 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/USAT22101482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13cb742b043f6498d62ee0d142c82cdb1268bb42d80d9c8d6d1096853aadf1. 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/USAT22100914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc34411fce86b3b3a18de94d985ab78a77b5d0e7cfc0825be6afe94b4f74b30. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USAT22101481.
Have Yourself A Merry Little Christmas (feat. Missy Higgins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cbe0ed37f1a3df715b4e1812073e44557a08efb2a66538f6f267ca88daced2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:12Z), 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/USAT22104837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de6cf47472a9e684025463685ff818563dc4475d24de780cf28f01f5fce9c7d. 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/USAT22105330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb52d317956eeaa439cf5cd0da2df08a3eba1644325e596e6e8edd950fc00445. 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/USAT22105331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefefb7d31a9cf8d590d3e5bd8b8a72097302bbaa0755fbc3efc6b0f1ccc7ed2. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USAT22105332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3110d5fbf41492f480e58a9ef115293447758b863765cdd549f1447b7231ada9. 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/USAT22105333.
Don't Wish Me Merry Christmas Til I'm Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37628261a738f2fabc38672b228a2ea718bb051b37db82db4d2db7dbaf46edf7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYY2461529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff7ccf267aa99c91bbdcf6312dc77def51c46a75041572cef8837d04d53fdd7. 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/QZTB92354884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9695792135efb0daca8754f4d4030e6b5c38acd8ad5ca99fce9eb00fa1ba3315. 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/QZMEN2473487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9695792135efb0daca8754f4d4030e6b5c38acd8ad5ca99fce9eb00fa1ba3315. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEN2473487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171d7841191a0ff300fe1c6d7e3f4572a8bc1254efb6f8d6225049391387fb7f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZTB82411972.
Merry Christmas & Happy Holidays, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1fee8d859d6cc5417cad270804c15c275cf300be60ae6a3fe1cbf4807ca02d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT21810523.
Tina Arena (Greatest Hits & Interpretations)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff54c4893da1f4e5625b7350354049109839f019ee2389072878d6cd1214f3e4. 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/AUUM71700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef50bae8c417a271a90af9d72a64dbd568dbfc259e5d03b5970bd2df6b93ffb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT22104996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b9ef45f004cac7b5d5c45ccce2b07527231efe57c9d1ee9254cfebd3fecce. 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/CAUM72400088.