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 0xb94d38643a73ebc90b0d73a88f2b554198a9895e3113dfec85a0768b2e9c1703. 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/45ee0583-138d-4838-81c8-437772b5f922.json and https://artists.proofprofile.net/proofs/artist/45ee0583-138d-4838-81c8-437772b5f922.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 0xf2f4835c25007fd8513ce286d61c485867056c8249246f94216eebf29a78e2fb. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZTAU2217807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b70bd0597bfc1d68706d7d7f68176fc13ab53be55dbdf6b1b4b130386bd1dc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZTAU2217809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df3e360c2eefbe2aba8d1f8d7993c42519c8a90744590a3aadef3c123cda9bd. 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/QZTAU2217811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40097bd42bff10f27ea80c47a1bc710917e5bf25075d6be5132b63d132d094be. 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/QZTAU2217812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0a18bed5cce139d97ced80982db46817018660aec0acdcbde827f28fc2d1ac. 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/QZZ662443217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2386e3c7d75eaeb6048ff442b0cdb8bce7f85ca864ea0bc0318a479a7cd54b. 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/USUYG1515438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191aaafef0cff903ea35b18e864b20ff5e9c1940368b29f266508694ec787736. 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/QZES62326866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe2049bba3ec90f7a706006408e91d915bdde923a241be6f8ba29ca6b683a30. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZA56E2302044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449034c03629577614652636ac541a6cbea94d037491cad4d5e0dcf1d9048b97. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZA56E2200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5feb867df0515a6f9e894d83b78ac5c32ff82791a262bc478f511caf892a528. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZA56E2200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05b9e1aa90995c65b04d650c8bd3d2c11391381d1e2e091addf2b9032fa5f49. 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/ZA56E2200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa08aa0ed4412a9ca8a7752ff79e1c36d9cc8ce0a321b73e85069941c3f475e. 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/ZA56E2200839.
Eloyi (feat. Aymos, Kamza HeavyPoiny and MusicHlonza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1dc3d14d196825c484fcc2b4e60693baf806e987df45c287f4f2fd59e3503. 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/ZA56E2200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ad8d1c885fd30071c8dbd8245eb17313d9c01d4fbb605c7d44e414fc0500bd. 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/ZA56E2102461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe353c90181050e6b63fd023bceb1e6053514431fd016dbf86fa47586c43f2712. 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/ZA56E2102462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb91f780d03885619dc73cced6205db4659182c2ba38a4e9bab84f92887faa7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZA56E2102463.