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 0xaca23c78296e012733d36ab2daa759c118f90500d6a482f4148ba61ed4b6189c. 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/ba082f5a-2822-48c9-9afd-9049d2970282.json and https://artists.proofprofile.net/proofs/artist/ba082f5a-2822-48c9-9afd-9049d2970282.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 0x6c533c6bb070893e2f70d92b9fc4841bb6a7665348ce394801b24c4d58b3557b. 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/FIUM72100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c12e72a82070b1f618f1eeb0a0c8fe1616b0c9d5772ba67f0550e9c703b844. 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/FIUM72100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02324a2ac73126e8066ed7a112c7891f155d0e11a80e83aeac92e1b14b4a9068. 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/FIUM72100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d90f8a82e3502fdadcb0f367b667e1c5e59e9a8538b09e23611412eeb40c61. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIUM72100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055a1d7d424f97d443c66991058741f559716e2751a3e4497a9c6d3509dacac. 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/FIUM72100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc145ee0af8963c244ec56458e387458bfa96b8d1adb4ded08e1fc10b9186d3f3. 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/FIUM72100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba06f29f5939249626374f7ff7a652db6f9d39c3eed6608ab2a1e09a0a86d46a. 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/FIUM72100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206fdeda3d40aedd6971008a899db2142c746af81e7a09bd599ba16fa29b9147. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/FIUM72100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfabe2987bf81042817caa7979efc48c1d01625b53601133b980b59b432a4fe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/EEOY32300001.
MEIE SÜÜ (feat. villemdrillem, Maris Pihlap & Mattias Tirmaste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832b10ed94f15b8dfb01f36de87546f483497d5996d4caf25738ae42db61b54. 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/EEOY32200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1105d4b6629720fd2fbdf42fd8cccc8672723583955d4810d8d36b7482b7707. 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/QZK6K2093233.
SUCKA SHIT (feat. Leis, kewin, beebi, villemdrillem & pluuto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15208acdd47b6d3f170facea1ec19020c44c51f534bd45cd797cd7823bda160a. 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/FIBAR2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496571afbe0710222d1629616dc646a8551573986d2c0b76820d7c43f78a6fd9. 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/QZTB22255223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdc8589700243ea8372adebd2b16c52d6d64f86145e54fd55fd5f3979de2fc6. 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/FIUM72200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079304a20670444c3eeecdb2340df8d9386bf6b21d4c9466a39f1d52849fd9d. 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/EEBF52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02324a2ac73126e8066ed7a112c7891f155d0e11a80e83aeac92e1b14b4a9068. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FIUM72100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfabe2987bf81042817caa7979efc48c1d01625b53601133b980b59b432a4fe. 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/EEOY32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832b10ed94f15b8dfb01f36de87546f483497d5996d4caf25738ae42db61b54. 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/EEOY32200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda2fbc23bcd378872a514b62635228ab285d96f540fda35fba95f90e81845d0. 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/EEBO32400002.