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 0x13034177b7245d2de3e14e4d27ca5d350fb24c5bf445b1713c89c675f46fd1e1. 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/34d39d8b-61c0-44b7-8f22-d8182c2c2f78.json and https://artists.proofprofile.net/proofs/artist/34d39d8b-61c0-44b7-8f22-d8182c2c2f78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Allegro - Kamilo Sanclemente & Juan Pablo Torrez Remix
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 0x75235263958cb0031f0ff99821ba3a1a19963e57a11734e45c312bc364b97d55. 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/US83Z2353213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c0579b623e6f06517dd0a9c83571518af129583b5d7171741990f72ecdd87f. 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/US83Z2302440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6161dfaf41a963860c90c4e23f06141944962143471dc25272b5695d24fd1. 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/US83Z2308924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4446a323bcbdb0658e5834a79c12307f3448378954d3d8047e64d174dd453f. 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/NLD682500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a88b76330f187faa342de1f3ce75a138902a11c9aad1a731558108abba8d2. 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/DGA0Q2488498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a47ee3b42765db53758465712163aae755b5b05a647e55596d9b3a4cfc8bca7. 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/GBLV62402953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0ff576fe051bc751b539447955e9e73d2079154adf05e88601ed945cbb7c0a. 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/GBLV62402954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd12c26811937cc67c9071aa4a2920774e6ab1ae85355c1856a25c2906cdbf69. 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/GBLV62402955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373dad1495c644a48119bf844d5f09a6a4051b46dc44fbd6e943caf9824a8202. 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/GBLV62402950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6760748c714a32a3c74b51c97ec92a3c144d0b72809eea2531856f744a1164c. 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/GBLV62402951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed71ed773af1588b6c7322390f12c28a963ea73901b9c83275f8f9279eabec. 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/GBLV62402952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb20a8b6e73d71e660e4092001a00f3529ee566450043cf2f8aa6c8d30fe993. 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/GBLV62404150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182619b1db5cfccc853b63f1354f8cf83fda18c547b1f33e84047696b6b883be. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2416615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c382b9339c8461b55f4319f90ba8870c16beac1cac278b701c8bbe90674b10a. 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/US83Z2473443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ee9223a40a68fe2bec2184d63b6a16514e1a9397130b1fb3f5b853d5d092a5. 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/US83Z2459522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec71161b167f6f7e47511002f308a8d809c6c27417a5c48af11b78524fca1f5. 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/US83Z2459525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573474f307de1d59e4a98f3fc53c5ea4f5a40cca87219ce1857a89bc3d983c81. 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/US83Z2345958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1036d8e1d5706137706bea2fe99fd256cf6ce9014e2ad1929f0a6643a2b5ef. 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/US83Z2345961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774522a6185fe7997f43d4b96b650b83c4b15d276b96d00def51afe8f9901778. 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/US83Z2337689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde4a81be6f5761186cd56fb50e0d2f45f15dddae79d7f6b9381e332f9c99bec. 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/US83Z2337688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a3d78a94ee371e7a47d98daa843ca5cab808d759ff704b967c596107d6865b. 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/DGA062315659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ae12c958ed7d23e634dc21eeefecbf00441a62b4a1a668d80077c29e762dbd. 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/US83Z2319179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8a571368839fae6459e600345e698c5a80e321a421a5ac756b924354de3b7. 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/US83Z2310195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e6161dfaf41a963860c90c4e23f06141944962143471dc25272b5695d24fd1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2308924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c0579b623e6f06517dd0a9c83571518af129583b5d7171741990f72ecdd87f. 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/US83Z2302440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed183f366ced4e1f4b5140490362f864f297341b03e186d8deafbe9620857a31. 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/US83Z2226295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc03884fccbb0e67d7e8116926b31562e08c0dfe93d24da225861b964678a8cf. 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/US83Z2226638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17323e5eeec2305dbfad133873759f9a00dee8a082511a19da1ee6b26f5be53b. 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/US83Z2220744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7127d6117f87275a369469d84a0a828b080911126e94e0d1e587bb7ca9ab0ae. 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/US83Z2144863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c150eee83ad8ffdf01180baab1ffb24902d18e6d2229748bf6ea3cb8a0e092. 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/US83Z2143657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f43d410cc04acbad327f13ed0eaad6d9c1e1c8685c3d9f8469072deb4773ef5. 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/DEY032502904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc208f0767757ef6e46012b492104a249e0f6c7224383aeae216120623658646. 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/DEY032502905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabb83e15deafadf94a4e455f660ac5a305defcbdb49072ea51af71b57175b48. 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/DEY032502906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8be018fbdb5d84197e199914a98338ffead46eb86c0b75a74406c8f90088bf. 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/GBLV62215706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2788ad1ba51f849da50f4762f525a734b034118288d4a2c62e6b8cd050dbfe6c. 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/GBLV62215714.