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 0xde5a62bb84e6df12498e47ff95560549fdf411c6468e3fd08bb59cdbf0048d46. 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/eaeb7a62-938f-4337-b13f-14a37ff48d7e.json and https://artists.proofprofile.net/proofs/artist/eaeb7a62-938f-4337-b13f-14a37ff48d7e.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 0x9392e4388fae84e94aa09e67e3aaef5c2277e62d7d71ffa788bda83a01c0cee5. 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/QZHN82596256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c9d02fd6e81e4ae77af54af99e9429083b6b208e7c6a55e2f3dd5e6180b841. 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/DGA0P2445746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20d3ec9b7c7aeee9ea1be366d8dffab79589065beb9ba4ef8af5239b917258. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA0P2445747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0007b639aa4c5908d7342b40fdb2f6f6530c9a869b781af37dec714e4aab4b. 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/DGA0P2445748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12094f448141f92953d58fe9c9f0161e9695936bc0fd52acc2f8b10444d41fb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0L2452922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12094f448141f92953d58fe9c9f0161e9695936bc0fd52acc2f8b10444d41fb3. 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/DGA0L2452922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a47ea61f693505db8176f51d3637d84d852a510c270d4a7a4db90761ac8e8ff. 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/INC622301185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437c1918f9093e7b6ca5584521024f05fcf84525bc97e33945881f7abe19cea2. 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/INJ221906508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2568409e2efe751f3624f335de6cd8650bff37500081da83779b472c62cb5f0. 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/FRX872259451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36affa3816db9d736bfc91211580a116689b2075b5989c2d420d6d9c0f17db8b. 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/IND712214229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9d23f9be8189d476bae6cbace45440f3d6e1043de32ce756d8eecfa77c8c67. 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/IND712211299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7610675585e5e1316bd3d44e0a373ab696a6e4e1206f6a27baba01eb8751d762. 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/IND712211300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ad06df482238b51ab0ef989c24353e4d8a55682cc87df453727db96e78a78. 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/IND712211301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0efc6897fb249fe82e7a4aa014609c7cda7f84376c1ac92cbe7003f2b08c50. 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/IND712110813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2524de96024386b551c6ad7b3522481fa3fad236cb08abc2572f845780c7b0. 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/IND712110626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa689e9ebcd9b708bd102f63f524b3c42d341f9b1a0c46fd27fedc6512b2ff80a. 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/INN612100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2859089d5c8dc9804f5a7627e4e2193f88d9305296d7080900492608c585408a. 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/IND712110177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8690e9d8b142a122895830d243a1cdf06733c27bbcab505df92b7de7a5a84f8a. 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/IND712110135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed69e511ac5ace3f2cf7e4b65032b12f7d9c382c02cabbed9170224bfe1309d. 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/IND712110075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12163fad8f738b468247318aa88cc0544758b395fd21a7fc69388dcc77b85089. 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/INU252102232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4644d0a84bde7a57e411e94f8b6d71c1afb16c3ed530362a85d37da7ec1475. 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/INP532000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3512f23057e8c76c77d64a5a2d4df6d25a3ecc02355b2f7472afaff0578f12. 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/INE181709922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04347c0c7112287ddc85341209ee43371913cfed63ea8d985e6ccc1f451b4d82. 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/INE181709921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb23f02465a94d9981cede70df624952a12a380ddf2c186c9f051eebca64b721. 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/INE181709973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d35a23c5b19cea4c9dd115ec0726bb1ea39d4e7a701a636b7727c4da8be4ac. 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/INE181709915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe764b73a5cb303f9524a30f385177a3707f714fc69aa6dd1097c53038bc2b7c6. 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/UKJ8H1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1b6065d1675ddb372aea5fcdb579f72b17ff8bbda6fcfc06ae7ee01c356a7. 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/INM432100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe529ce32ec0557c55e3401fe60331bacac05ea33004d4302f16d421067917e24. 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/INM432100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338fb5cdd6aab5f80ba515c2ce262f4d594a1fe87ae65280206049363aba73e8. 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/INM432100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf16af3ae0c558c008376b54591ca16b032cada9dc2d0aa2294510a79182f06. 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/INM432100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d92929140c904da33af655884a7bc873e240b06e9c99cbe3af1be4ea178783. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKJ8H2004766.