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 0x7e0dd88078e2045ec001bd31e51cb915c6dd5cb4452fa1fbaba6115d20a263e6. 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/c13342d5-96ac-454d-b58f-0184426c6032.json and https://artists.proofprofile.net/proofs/artist/c13342d5-96ac-454d-b58f-0184426c6032.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 0xd57a29674fbc19ed96af82f35dd313fffe1f47b413bc801c22bdca608b7703b9. 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/KSA002401108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f00b7e89d0b0ff6390dbdc514483be0c4a25b81ae403c53928ed5bbf7bbe59. 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/KSA002400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06191691ee0447dc08766a4a332c02256b8e6a683a871ad8ff01142aad82c7db. 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/KSA002400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61724f101b5b6bb07ddd009585f2e6785ee5b1420d4c146af082c77c9a468a15. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KSA002303421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb011972b7533ced477f039b6568f2abfbb9013e21c849d6867ac613237ccd27d. 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/KRB472301823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb6244f4b2168eef44b487247d264d79aeac4151d326d216cbf4e3d6b72dde5. 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/KRB472301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ffc245d34f0f1bf052c948bebb305bbfbcc27b03c1c1ac3c6cddb707eb9dc0. 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/KRB472301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb394be3ec85c6b798e41f14a5b935ca4c77f8f6d67ab28f1a5a7e65f6b52a462. 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/KRB472300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff2a4b1927ee9e6de563f49828fa17943464fbfd62ae356963228c8b500555. 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/KRB472300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3c5ae19726e61a44d83854f7349635ddadebdaeb5177e50c71347999508bd6. 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/KRB472202198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a8895b1cf7ee86b0ebabf886df771845a485d5f599cbfb341816e9bfa9abaa. 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/KRB472202199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b39fc2bfe4ee98a8683bb70fa53fd5d96314d8cd4ac4515d3e595756232ea5. 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/KRB472201895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238fc10dbfb45d55d9e451ad827924b01e45aa18ee0f2700320ee6e29ebd322b. 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/KRB472201475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecf7677772ec366dbcba3f843b22fcb7e63e8f04e15b5f6e6baa1a6b39881df. 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/KRB472201166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0f5dddc2228dd33705ebd5e8cc88f6933add0566ae1549e8db6ceba5a788a8. 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/KRB472200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c285aea7abfbd2cdbfe5d17cbc36b3e16f0dbd2a0bcf605423cc94a9f6d8b8a. 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/KRZ291939851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f64c19a10a05db70bbe87576706ac82cd9a3d10b7562295ed26be4b95cdc378. 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/KRZ291939852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0af890f8e6a691f2ea08ace4dd9850a56954bd9716d63724df02b768b649b54. 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/KRZ291939853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0914e0cf38b86039810ad2a700bc3ae5258df45ea0dcfaca13cd17cd587ee058. 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/KRZ291939854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808aa11066274894e5295cc90d6ac858478b8990481271437458101a7f3de961. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/KRZ291939855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6cf9903a21edf4489e375b282e5bf32382f80abd7f460e474ee82f42b7dae. 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/KRMIM1809676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5771af165af32b9b5c344336eff8a6a9e74cb8cef722e6a3296ae9fd69892182. 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/KRMIM1807128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65a7e4eff95ed5bb8a055bb29a5a4efa4677f22018bf60b823f3adf1f8cc6fa. 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/KRMIM1804748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2047291f346754a9b7597541bdf7d92aa45cbc9cce2782a6610853322e2f975. 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/KRMIM1801394.