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 0x721ea5d31ddc8fa8c6e15151f13df5d99b895499afcb053aa834277a78b943e4. 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/e7c808d7-7f66-4fcc-940c-74e97100c9a4.json and https://artists.proofprofile.net/proofs/artist/e7c808d7-7f66-4fcc-940c-74e97100c9a4.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 0x9b2d043b1ad72acb08646581dbe8fec789e95f4d315f89615bebc9b4901910eb. 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/FR10S1790400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39757679db3fefe7df163f463cd7baee9c8c0c181a59a7085f2cc89ffefc4c0b. 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/FR10S1790401.
Instructions for Time Travel - Recue Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6d34be81fddb1ece12fb86013fbf5d03721b1c0ac26a55b260be1d182a643. 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/FR10S1790402.
Heart as a River - The Road up North Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e736e671482480c7b4833d44aa62e6d25ae5ed184a33314ec0a587955347e. 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/FR10S1790403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb579452eb1e2ad550d61bbf8739d545dd45d0e4bb12db6e5a01aeba87ec3fcf. 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/FR10S1790404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4a1daf1a2854c200c0881e39b04a9f265b3380cd3d567f9cf33312acaad8b1. 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/FR10S1790405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88145d3e24b2e8d96541c725e8b141cc0120aa09b8aa4a916709506ef2aba0d3. 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/FR10S1790406.
Instructions for Time Travel - Deru Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9432ed0ba29b1adf632dbdf54df6457fac59623899432debb0e30446a4ecbc99. 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/FR10S1790408.
Heart as a River - Perera Elsewhere Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992fffdf92d4b4068d38b5a473a3999638cdce3132f79f7000ab74eeaaf9d55. 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/FR10S1790409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da95bd7980515cb8ed230e5604aa0bf5043b0bc6b2d1876a4847212d016a6d3. 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/FR10S1790410.
Heart as a River - Christian Löffler Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfcb22759ea0e009a3631fac751e3763956f51016043e41884a3508b107686b. 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/FR10S1790411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacf2184e6221cdafce0e35ec46dc8be094e9412e20f61fac85db86ff1608a98. 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/FR10S1790412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e020e9e3b3242205e1b153f2f7fc78cafbddf8305415f53310c8627ad6a21c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR10S1790413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea1922e77148fce0545833dc63dbcbea326a7d6b6be6da1bf9eba28e049fa05. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/FR10S1790407.
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 0xb45f53aff606cd86b4634ad60f12a8b6e531ff0c8c88fa8a3e175da35ff09e47. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR10S1790414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3db3122f425a4b4968395a6138a0bead70c0e3c5659109ecb9cde0aacb6b7. 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/FR59R1668579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f2b53e9658b1de802e5a79681739c3f65d4d9cfd094aecb83e345bd580e46. 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/FR59R1668581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cd2252e72436ab58d76a43b984c220d4d2521ec82d1fadbe288f5e65c7e9e3. 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/FR59R1668582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee51c8b50b3fcdae8954e37271315046fac51f92f40d95f2d1947ace4dc4f9. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/FR59R1668580.