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 0x8753e7d04544797439a25b33cbadfc88dae31ebf3b9aa746b204a2e9ad19f11e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d7d60ee-4833-429e-86bc-bd4de4859808.json and https://artists.proofprofile.net/proofs/artist/9d7d60ee-4833-429e-86bc-bd4de4859808.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 0x317813edb4daea7ba31c31aa12bf21de5cf910bd1a6924379b0d43ab1fc40998. 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/FRX202058414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6ddea1928a6a04f7f84423f3dfd37e50a7b24bc878dd9102501856f5c546a. 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/FRX202058415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a9b63fe4b8f2fa1a57da732aa892139bb60e00020f71041735bc6652740b2. 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/FRX202058416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f340d7cf9fc027e75c42bf30e07aaf2366d31e884723a237afafa08ba1ae350. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/ITA642300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3646b9baf555ed443c19cbc7d0f2031addaa3a1c539625781847bf190d79a98. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEG932300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab837adc7f123d9eae029e85dfec416d4577c27c98ff7c8e99231f959179e7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEG932300382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3646b9baf555ed443c19cbc7d0f2031addaa3a1c539625781847bf190d79a98. 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/DEG932300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b31bf60cc77be3b13919063ae3039a22b29534bd7a4d6da8ad4687562603ec1. 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/DEG932203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84361abc478a991305de59c2fc3ed86fb124fd33dd8bfb5b17d2ad78be69acb. 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/DEG932203183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b362acf21096abc4c74241e04651d0d088dfedd74b7dc3b3dd74a21a9e39184. 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/DEG932203181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6bf875fd6631c3cfb068ee58e07e5d177fc05033ec731e7308108fcc7c07b6. 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/DEG932203182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b31bf60cc77be3b13919063ae3039a22b29534bd7a4d6da8ad4687562603ec1. 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/DEG932203184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171b04b5a3a5c5bb9122a8ab49319e24fe314984bbdb0d9b2c8dca9295c4ef4. 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/FR2X42148131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74efb4ebae9570a8c5014bdb5f096a623b09bfe471c74ccc06fd0f2b09ee2676. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR2X42148132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159472d3fb2eb2958b824d9cd2f6ea8829dac7c9734de38131de10995af0cdc7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLEF82000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8e3e9321ff3b030187471fd5a86aff03496c583715929f3267f10f51cef504. 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/NLEF82000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e117c18849f4fa590e37e02f0b6477854cd969811b05cd32603e2155b29c9cd. 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/NLEF82000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54a23583bc1aa0322aabcff4768b2b22406c03493db5bf9026feace91a54f2d. 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/FR96X1945528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b13c2ca8ab7bd10dfa83c593e93e7392cc7509ea9f0d8d88f3e185bae088f58. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR96X1945529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed05cfca585601293f827105dfb31a558d107af396d569f74f0429a4780a7bf. 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/FR96X1945530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1800377462899067c56041be2f3e889116ffebaf4f81c870953d670c2462491. 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/GBMJG2332089.