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 0xe701205ed7488cfd5dd63f16f079b2ecceb5643f5dbf1198fbd342878713d21c. 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/1bff4af7-0e14-4566-ac90-9392836b6455.json and https://artists.proofprofile.net/proofs/artist/1bff4af7-0e14-4566-ac90-9392836b6455.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 0x5e50c0ea5d5e7e65f560ed5938b63649130d1815ad31e5294e082d336615d09e. 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/QM4TX2426599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8386967d59479a850f41a0d31e688abb8140cd7516a97dd45cdd359af2f0ac72. 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/QM6MZ2426492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e50c0ea5d5e7e65f560ed5938b63649130d1815ad31e5294e082d336615d09e. 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/QM4TX2426599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8800a26bf2ec13edb6ec65d9d98274ceb515545fa578f65ee5be3b142ad4d1. 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/QM6MZ2426495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc707d5781aa45214ac2d6d1d88844be018f2ab9002ecfb78908f2327ec6a6925. 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/QM6MZ2426496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66f2a9966a068f7eb32af04c2abc88e4f4ecca7ff8dc52b57fca508ba9551f4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM6MZ2426497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b0b20c00e61e2a513d63bcded4c434057d9c7f20c671d90d55682bb559baf. 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/QMFME2378832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e320ec6d088b2d5708e4105164f2f1cb36489fc5d8e46d423d3a8dcdd6b065. 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/USZXT2352002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36505e361d8bfc69a5b90d6eef82c37d05b324a141b1170e22edd78ef9d798cf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USZXT2352059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b764dcdacdfc24d67e7da2c67a5a6427ebb819040514cd8fb9dd6e8841f133. 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/USZXT2352060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7155eb654fff39a872cd9e157196b6cb2ac634106b6c644f48b9e6f1a62e2c3a. 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/DEVY92100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9391ed2baf1de40c45728d4d9a35c7fa160befa0676047b15ac843908c89a8. 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/DEVY92100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52243763c9e17962eda1d809721b7b5d29a05ccefc41b394621ca25468021e25. 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/DEVY92200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04a1de53c7388cca8dbba4e52a7b2a3aeb413b9f81c5c62f9c8e00b8306f56. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEVY92200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c4e4d27b9799b54690582e0026258c968d03a4b3407616903d61572ec22eef. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEVY92200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed4f7bffed76b6ea5114a628ca7e2054cc13ef49343f78be69c2ebe95f54dd0. 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/DEVY92200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf565d6ee1e0c13cccb8de62b122f08459812e3321709e951a6cad72fcc35e79a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEVY92200170.
Room To Jack - Red Eye's Occupant's Life On Mars Revision
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0376d9dc8bab50e5e28f9ce44675db3dca42e3a8eb369e4c6c2f47d9489bf23. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEVY92200171.