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 0xa6c4dac740bb84a8df498c347b1c9c795c58b81c3a547c95fec00f39d497173f. 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/64ed67c7-fa4d-4326-8c40-81b50eeda243.json and https://artists.proofprofile.net/proofs/artist/64ed67c7-fa4d-4326-8c40-81b50eeda243.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 0xdd03fc5190a901497dfd5762392b8a99ddf8de395ee3333e83b9932dd68c3c01. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZN882559619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d1457030ac6323e74c3403e8cd61e62e80e1b86e6a6d197b34bff9f1bb3d2d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZN882559466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a8ab93878c03e1a81fa0f1f1cd54ab904ca0a8d9a7743ff87cde43dc0be19. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWDW2537858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3c20181a40a735d31260da43a7e0c7afaa138d6922259e9d7d563e453906e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWDW2558612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a8ab93878c03e1a81fa0f1f1cd54ab904ca0a8d9a7743ff87cde43dc0be19. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWDW2537858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738a7bcd30ff2ba9b5a1112580602f9c7ceaa17e3c4c7983afa9f4d08fa506dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDW2558614.
New Piano 2 (feat. Kaytee NA, DJ Kwamzy, Nevrr49)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb03aa2e3e4bc6dfc4a015c33fa2a5efddb9e6eebfe5aab2f6976346449dc3. 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/ZA56E2315479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa0cf3d9102c1091d509ac9e93473f5e5f041763eeda1aaad0f0452b932d8ad. 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/ZA56E2527228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87afa8dfdf21f2e93fdbf05d1d101402d4e7ad1f74ec72b51fdb81354bf86d5. 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/ZA56E2527229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ca234ec01bf83473970071b344144b69b694ff2cf447f86ca50136df36ad9b. 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/ZA56E2527233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb69d0d61c1fab1797c8e24bd7eea429d066e044fa5e90934c729a2f8d3d15fd. 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/ZA56E2527234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27145b8ad5cda9e11cbd13f4baaca3f9257b3e04137c01018a153566831b3f7c. 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/ZA56E2420199.
AmaConsole (feat. LeeMcKrazy, Philharmonic & Bontle RSA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad42fc373cce0fe8a262eed6d0854b3621d305a0b87c0b31db08e66b4bb116f. 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/ZA56E2420200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450b36c850dc86d8eaf55abe216f8b2ef5c76d2635d0a49170dba8e48fe9e5f4. 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/ZA56E2420201.
Nando's (feat. Scotts Maphuma, Sizwe Alakine & Thesiix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d9a20971faf210895899e74317d5fc04da5d22011a3885708252011f45db7. 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/ZA56E2420202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d9c95def01dbdc791265fc57fc0cdec11af1ab8b380963882d909be60182e. 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/ZA56E2420203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b47cff604d48c3476faaab2b72b2f030b9595d688eb6e1795ae62cbae122a1c. 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/ZA56E2420207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5078f0b6524af0f29516f9d44261352a4f74a39610b853a6477cbe996ddaab. 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/ZA56E2420212.