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 0x692ce603242ca9ea3550b0175133d694340b3182f5bb8dcf026a2df61691f633. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c68411fa-a29a-44cb-921f-22439c54a093.json and https://artists.proofprofile.net/proofs/artist/c68411fa-a29a-44cb-921f-22439c54a093.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 0x5f403b77acf3a00318fb855cd53eaabf2ac422cc0fab4dc48930b9e0506253b8. 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/QMKDP2300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a657404f16e2360f2fb7623663915c0eac27a4b63650aa4ea2a391cae858558. 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/QMKDP2300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9279d00c745eac73bdcb07e0007b7f21d4746d21062326ba4d04d8c48003e. 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/QMKDP2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52986f42fcefdf091fb4106bc67fbb7560252499a9ac54dda46ddba9531e72. 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/QMKDP2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f771e58a56bb5be1b5e92419fdf8af80943f99ab6773bb19a1af18f783f4c15. 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/QMKDP2300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2964af19dc49b230ae9eea430ac68b6f53bb79c6785becdefdf02d75bcfacfb. 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/QMKDP2300226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b419ad11fb37da0e6358d3a6c316943127eb537368fc1c0e6ff94bde629bb2. 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/QMKDP2300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f29a12b6d9cf3f03c58d859007e38fc85a797fdc04215f33750eccc9722c0a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:53Z), 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/QMKDP2300228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276a6e365d12d02c7686f008b8e9176db1ea1b6ab57029e521e0c48b09368c61. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMKDP2300229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f771e58a56bb5be1b5e92419fdf8af80943f99ab6773bb19a1af18f783f4c15. 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/QMKDP2300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b419ad11fb37da0e6358d3a6c316943127eb537368fc1c0e6ff94bde629bb2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:25:35Z), 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/QMKDP2300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52986f42fcefdf091fb4106bc67fbb7560252499a9ac54dda46ddba9531e72. 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/QMKDP2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b80587eca2093aabfeec72ac27c3b6b44e9fec8cce49c68b0cab7ea744cc347. 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/QMKDP2000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb890672bc13fa157538ef9f30ed849808b314e8aeb2fcaa4f6fefce0e721351. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMKDP2000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bec6dd35d0be5a043cfc5125bab2ccf99b9323acac32be767dba7196ebb7d4c. 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/QMKDP2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dafc12018c8369c1fe89ed7777354a3405c4266d791dd661287e09dc48bc25. 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/QMKDP2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da030d0379dd252442e747bff6268dee5edf666ac38e1a56b9966bbc5cccf86. 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/QMKDP2000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dafc12018c8369c1fe89ed7777354a3405c4266d791dd661287e09dc48bc25. 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/QMKDP2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb890672bc13fa157538ef9f30ed849808b314e8aeb2fcaa4f6fefce0e721351. 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/QMKDP2000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835f29f1451b956e8fc7e8b9b4e8352bee2db240859e785cc70f6c60e0f9eef6. 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/QMKDP1900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4b6f282abb2b436e701a0d5b9f195696094da18f9540fb7155231dc9733459. 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/QMKDP1900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c2e8e78cd4c737297977c688727d2a843bf038999cded10e9849a41a94ec0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:59:42Z), 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/QMKDP1900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf215d8432ab7daaef2ad998a360b212f2a6e8d1a761d160138c303242cc0fde9. 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/QMKDP1900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebe470274566d65c384f5963c4c63fa361e8592f217ba84246a204fefaa8b51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:37Z), 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/QMKDP1900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c2e8e78cd4c737297977c688727d2a843bf038999cded10e9849a41a94ec0a. 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/QMKDP1900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebe470274566d65c384f5963c4c63fa361e8592f217ba84246a204fefaa8b51. 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/QMKDP1900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eecf089c1e0102b16d7695ff04ae56ccfa3ab79beb3b2958a6ffe1476d986a7. 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/QMPKX1869990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8879a3cd532493520cf4b2fece7c46d6d0e019dca03d469b50561205357b189. 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/QMPKX1869991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eb6d6cd4d91b6fba276ffe544100ff3258fcd330892eba8d93ce8742cccf94. 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/QMPKX1869992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9536bf008e7e0279b8477b9d8253ca6c1ea5397a313e62a45ed71a8908d7e78e. 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/QMPKX1869994.