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 0xcca2fba32b84d58805228a77756ca9c04f0c851b82e96f71197260fab5de6db9. 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/fb8e7fd3-caec-46cb-a2b2-5a7c50a02faa.json and https://artists.proofprofile.net/proofs/artist/fb8e7fd3-caec-46cb-a2b2-5a7c50a02faa.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 0xe63cac95648ed7423b4599d308adcca8f2c4fff5318918b957143a90defdea99. 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/CA5KR2319715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eaa5e1bd5396a2a35b82eb5962f0df0530b1378d0486a13f7fedc249fc0feb. 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/USQX92000707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b613f565ad82ae21ec79432ece0d9999ed82c361f010f523e0b5530e07ef8a2. 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/CA6D21600279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a25991b3be24dffafd648bb8c022f25d34f489badd8d476993d606ac04e5cc. 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/CA6D21600394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b613f565ad82ae21ec79432ece0d9999ed82c361f010f523e0b5530e07ef8a2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CA6D21600279.
Goodbyes (feat. Method Man) - Dirty Audio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67bc98477511df80c40f1cbb2b976faa22cb7cecc26cbe9ef1586b305ace88d. 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/USAT21811591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa0c89ec21f74a6783f58a9ae9cc1113c1e88e1655e56b396730e355de9421e. 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/CA6D22000350.
Mean It (feat. Wrabel) - Dirty Audio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e863871da98fcf19a5c2421613da5677540de0bbb94baabc598dc35880de84. 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/USAT22001757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd100249629ee2966ccf09e02022ea593a9186f8caf0772de282633a3253ef79. 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/USA2P2414714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7a8b4d3eede5584de5164c3550ee8fece9f8e20b22cb40f726f53257d451b. 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/USA2P2428323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f459a13a8afb2a5731a6071be3c0bceb2c0d5cc1349cb7acc16153b1a190afe. 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/USQY51766097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b83ec971abe3726797bb838fdd7ed625434a9969885a02da011f036e92d39d. 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/USA2P2246634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f37c9e4f4ac487c5045764fbe45cbc647b284bf641d05dad8b928d085c09c. 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/QZS7J2337241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4882f4406f3adab6be7a7d7795c9a2fa95f4f39b07f464bdd36e82b16009e32. 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/NL5WB2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf9b400358177bac3a3c590c34d0943716306bbccc6a5c143be3672ec328155. 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/CA6D21700255.
LUCKY (feat. Tay Money) - Dirty Audio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2800ab3b17d4027a5a6f1eefac0a9726dbfe74cecf43feb693a976482fcb00b0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USAT22001345.
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 0x2008580b646f182410f28180a8c56fe1fa791b682c06ff8cda03e1aca9e8c9ed. 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/QZTLA2304584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721ba6e098c073c1afb04142598c55fb3ca80daac6cccc1bb40b414b210a7385. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USDM31300377.