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 0x54a81477c823ff7385359391b9e6d413bcbf04d343a9dd93f389b9ec985ee60f. 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/c22f1c4e-e715-4c8f-913f-410c5ec9ea71.json and https://artists.proofprofile.net/proofs/artist/c22f1c4e-e715-4c8f-913f-410c5ec9ea71.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 0x4488a1bd50021d7f1663403af5c9b00e2f97fcb97a4aa3bc797ec846a04d135c. 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/QZDA41942304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077d92bbb2a43d3535c99350482ac4df533265870d38d8e873102f84cb497005. 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/QZDA41993131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5deec12474de7ee7b72b8597bc4ad049c21ec59168a2c907063ea1d3bc7326b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYY1932054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0764fa86ca5761d130b8b46d214402376ce02590df8c37f808f5cf4889bec7b. 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/QZFYY1955315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8209a45d57eef5d0ffa17751e0dec6a43254aac78341824d1b03e8e0fbe328. 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/TCAEQ2039953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3773d267cee9ebb6c03f96eeb7216b1fa44a68a90dd58722d63a4187906d0. 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/QZGLS1944384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136e3e75386e37cedd0a6c74cc65134acde2ab214669bb557ba3b1062869ddd. 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/QZHZ51933872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82ab43cf67e5b7bb5dde09bd55beed04366224aaceb99b2260d6f989820cea4. 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/QZHZ51970508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ea6fdc76045c1d1d434d0642f29c99bcecee3aedd2b56935a25746564e22f. 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/QZHZ51970509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd8ac15389d34278948789265ce517c896ceb4cf937f9be35605fbdd80c7d4. 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/QZHZ51970510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f137c80acd79bff2ee6f36bf8a81ee4ee304c01c0f73008ffe2f75075c18fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ51970511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c531f3c3d6329d9f7a519ab183a010b858896753da2627bea4863906e2a3d22. 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/QZHZ51970513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb069885939a8d16219b3b2084f9cf058baecba650b2553d2cfa9197989f828. 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/QZHZ51970514.
Mission (feat. Soda Boy, Fntxy, Cozy Cuz & Yoga Fire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3773d267cee9ebb6c03f96eeb7216b1fa44a68a90dd58722d63a4187906d0. 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/QZGLS1944384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27492ffa3b75ecd21fd3b76352e5d4a13d66a8818cfff3ba0c4c43a3aa37de00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMBZ92156019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b17743ce36d938deea035e7b164c36445048fa64e6bc46384e257552d7eefd. 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/QZMZ92181299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa78dc01a35f3afadac623525904a40cd844b7e89ff791a39414edd337dda5c. 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/QZNJV2493669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9c553db920ff322ac9c4499229918ff6d3a73c7d5cd29e4ad0552363ef5d5f. 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/QZGLS2029428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07577728960bc417b2c071abc1cdb88eeacd77f7bf231fd4897cc2daef667642. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ51970512.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d03969936ff932305b9cc7a259aea82b8fd893f0eb1a80c50ddd3a7b5266c33. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ51970515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd5c931e1f188b994d536d7154e6d807be5093e103312124d95bf147bb34a4c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ62084036.