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 0xc186bdff45c8d0705e36c1e5a2591f6f851dc1f2aa8bba3ef0e2f609aa4700e7. 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/2a3f7d0e-fb1a-40ca-ba74-6c2c79b80461.json and https://artists.proofprofile.net/proofs/artist/2a3f7d0e-fb1a-40ca-ba74-6c2c79b80461.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 0x22c17f1894818d4a0704dd82c7115b3853f7e862d7912e02f683b8cbf2062e06. 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/QZMEQ2478598.
Awukhuzeki (feat. Rory Diamonds & Shaunmusiq)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565a3babf4780ccfc64d4945217aa0698700743eb04d715a9c92bb44351123e0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ZBN532400047.
Budda Messiah (feat. Xduppy, Mbuxx, Ftears, Thatohatsi & CowBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d0686f05e5e949cf9981004214af6372c90f49a020846b92231cce22a3cef. 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/ZBN532400048.
Uthando (feat. Bontle Smith, Scotts Maphuma & Shaunmusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6201ad243fbbc1c0f4b6976e053809256b7aa0de97ad6a93765f482925548b2. 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/ZBN532400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492c33bc1244adfd7414e4cdf955d41118badb87a0cde1381f004f580cfcec33. 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/ZBN532400050.
Gone (feat. Rishbeats, Cooper SA & Thatohatsi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5756f490f1971d99645cdf635fded99dd2e5fc8a0c052c3d1deb57b52d3f1d9. 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/ZBN532400051.
Grootman (feat. Scotts Maphuma & Shaunmusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779221fcd930c64085730c611ddb54b43ed95c0ea8f038391dd6601e9e900cf. 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/ZBN532400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad7364eb9e63b2d2837f7f4139d75b73f855d6162884547e01293b6e955cf5c. 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/ZACZ82300124.
Isaka (feat. LeeMckrazy, Scotts Maphuma & Stady K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef40b01e49284a42a9ceaf15cf69f99bf0b75fb9b804a5fa175e473f9df8b6ca. 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/ZA41S2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b6454c08738937a5486467bde00e79050675b9ab37ede6b783f8de4505ca6. 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/ZACZ82300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e80be8e09ebfde238387b2e3981e3475dcaf8cf1bccb4c41e266b0a090a78a. 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/ZACZ82300039.
Summer Body (feat. Sipho Something, Commander7014, Lassgroove, Phoenix, LeeMcKrazy, Stompiiey, CowBoii & Scotts Maphuma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43543da2af45c2d2e414755627f6db02f67039527edd80bc838871e8cbde662f. 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/ZBN532400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f09e4cf8fe3d2699b7b25c5851f14c10940f43127b4271fc7e2843b7d1c746. 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/QZNWX2251992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823dab3be9839c546de861b5b7f7f09c2aa7f9150950089a01189297f1ccbf50. 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/QZFZ72271725.