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 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 0x60f62ba5b4ba1384f29522b87272c7d99b8c741f3fef0fa62ad393e837f9d182. 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/6fbb586e-f817-4f43-bb6f-d4e1e903cef2.json and https://artists.proofprofile.net/proofs/artist/6fbb586e-f817-4f43-bb6f-d4e1e903cef2.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 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 0x56c59c60e5348edd69fc39ebce3bc6eef45f0e02588e317300b3536b86b47790. 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/QM84B2381001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19af7f7b5fabbd77b4c5ebddb5f08801866c4b94a411afa0c8d8fc72a573c048. 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/QM84B2381002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e1afc432e5843878454bbfe3b7f58ba46d3d9102a8457f6bf2d400bcf9fa71. 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/QM84B2381003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6005ec0f8b92ebd4af8b318e2e1bc4918de4cb3517b2746abf4c78f92d8f7b. 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/QM84B2381004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c76274a1629e7bec609838e75d858305049ac856591f6103e0e079c89cb7a8. 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/QM84B2381005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4163a8156e45fee68cbce94480fc60576b4fde6bd2ca5a6d9e89b02ac057f. 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/QM84B2381006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3cdb4a9bece1e7fda6318a50d65c5c98affe8fcb451b9dc9aa7855738b2773. 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/QM84B2381007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f9a98b150385f61bb185753406f06ac527f5fa71fdb09171f48b9b077284a6. 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/UK6822120589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fb28e3c9af00029976e365eb27bc466c5e4aa5d6212e05a6a0d385ba43647. 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/UK6822120590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ecae3adfc4a5de3bf66ae506bf3739ac0c8f195ba8db9eef7572e8f30a6bea. 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/UK6822120591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152d5b2198e853ca6bb12a6f99a2474b470e5c256987ab86cf4ff3ae9a935b77. 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/UK6822120592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180ef0938e4eacc66212106df6d7fdd7731da17e68dc234d272501e327b0b2b. 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/UK6822120593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83742e88c49c1877c27d2c0690ee8708623342fd2210dd762edccb7e27b54a0f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UK6822120594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89276678dd419a42b6f05d7fbc4e72ac0dca0d64ce0f0dbb6ab3477e89b4feb7. 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/UK6822120595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96919d6775b70d5ab32285359c83f2a8b440a8ab3428776d31b4e443867177. 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/UK6822120596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24701f1ed931c988a72bd3b25bd738d9d315fc4275c7de3df9e0a9bb703a7d8f. 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/UK6822120597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e1c3a2fe248ee0bf99a6bf1b18233834695143dc4301b1e0780ba7d43b3ae. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/UKEKP1800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12104a34ecd0a82dbde700f248b2eb239986b4009d111a65e2ab554f4dadeca6. 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/UKEKP1800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aad79a3fe31ead30cbd219ccb9a611528769f0aeb8f06e40b1cff3a2e97c58e. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/UKEKP1800059.
The Dream Keeper (feat. Cherise Adams-Burnett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968a9d3f7ac57f7d96bf85c03260cd7a4663503558ed90fea0bdc44c613d6b7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/UKEKP1800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd51bb2ebfc375f02003dbd40b00ab5e9d8ce6e0067cbc2eaa00d5eb4a6bb3. 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/UKEKP1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40093c6ee797e25cb78f50962bb12a1f8226f3fa50986aac09e5be5580cd0fb5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKEKP1800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d6f485832c48db62ebbdd11f5a36e599425de112e93e4f5c15b8d4e32eb140. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKEKP1800063.
Interplanetary Migration (feat. Mr Ekow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0368d520e6bef76b1a35c850b4fe00bb2576cdbb61fbfb06e235c3a4d0e47ee. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UKEKP1800064.