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 0xd9b67d23b6f82632e657578807021b78c08994e7f8e049f234ba7c9d92122595. 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/dad905b8-f503-4d19-8ba1-c23e01abe010.json and https://artists.proofprofile.net/proofs/artist/dad905b8-f503-4d19-8ba1-c23e01abe010.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 0xe4aaf69a63c0ac4cb4903410aecfd50458426d42212b2cb92c29a862fdddc926. 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/ZB88P2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c976d19935a7cfeed3efc9447ce435215709b7e0c64ee6783220e597014236. 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/ZB88P2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc275ec9b22afa5fd625bc16a76cd75fdbc227d45c53c43092ccbe8f5188ea3f. 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/ZB88P2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03a11dd5fa0c78f397798863b086e60b1131a2b45089ab8566819a028ef297. 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/ZB88P2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e0b701d4065165e1287ed30adc57d14da8c777a53d9cfb7fbe16ac61f17ca0. 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/ZB88P2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5b45c8f65741a50e737450c0bc93682b26dc1808d3d3f51d33870aedac78d7. 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/ZB88P2100043.
Time To Time (feat. Nkulee501 & Skroef 28)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb23cb7b33ec24a07490ac0d146123f8427d741fda41930c25ca83b770b08046. 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/ZB88P2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed7c27a1e86a970d849c2ebf93c6aaaa7f316ac75145bc3f934ecabce09212. 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/ZB88P2100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbfe44d97f95c041cc687ab6483969e7c30a5ab867cd18ec0245a613f5ba7dd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:30Z), 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/ZB88P2100069.
51 Issa Lot (feat. Nkulee501 & Skroef 28)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50726da7a35417dd8529c384d28bd6ca8a0bcc9e7989eed01727e032288266e. 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/ZB88P2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86cbc1cc8e0ee41d33589985c6c8c8acf1ea91af21daca40677c01770df0369. 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/ZB88P2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefffa0cdaf5d6dcec9027b5217d9acaf3c3cc213e04a1115b5dfc4417994ba48. 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/ZB88P2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf596e93298f00eaf163fd02ff935bcf42f88eed14074ec71bbd6c58a293cb71e. 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/ZB88P2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8601e4f4eb07a17019cdb6fdadccc09de95c2944ada12c44551546e2c892e8. 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/ZB88P2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8965d9451538fc9594e8677e5c49ac3d07b7d8a214add3802a45948f62f8f689. 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/ZB88P2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df1a5d14ae2c053b4e1a9d2d2a6fdf5245bad206e84cbc74619161bd96f5e1. 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/ZB88P2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f23d6f96eb8f4fbff8ec26ef9db8d9de2b597fcbcf7e7ff2e54c45d7378f6. 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/ZB88P2100063.
Tech Love (feat. Deeper Phil & XolisoulMF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec58f0ade8638069039df7b1e3ee40813b2f974f938ff175851e0c26cbc8785. 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/ZB88P2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f60aa98805f8c047ac9a75f333d7c5cbdeffaea3b5529428de4ed949bb16a97. 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/ZB88P2100035.
Swimming (feat. Deeper Phil & XolisoulMF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23a8bf4a45bfbf08c15e8de1115fab98dce59b3ff818e7435d6ceb6c26ff86. 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/ZB88P2100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d82cfa4b886fa85be355c2ae60ae1d33581e17664dac2215a69d0c442330a. 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/ZB88P2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52631b195abd09f6bbf2880128d8c9300c7ca4d963f78d0704fd5b04c46d932d. 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/ZB88P2100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b3c8cd8bbe8e1751c872aee53568f592dff11d874ce33160ed3c0c524b2373. 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/ZB88P2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1df0439d93c640938f89f334b11d2defdf1d1ad967c75e5fba7de56c1c5e70. 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/ZB88P2100062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a65e47e554199f24bc9bc41c8df557dbc64c4d6805a48e66d4ed81f009f307. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:52:23Z), 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/ZB88P2100072.