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 0xe1dc05ef2d31788e98bda6a5a356eec863652ddce40ca18f0ce1cef7b3916b21. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b27e1ab7-e252-4d9b-9ac0-64a9432fa468.json and https://artists.proofprofile.net/proofs/artist/b27e1ab7-e252-4d9b-9ac0-64a9432fa468.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 0xac9413d671bce4edf817f6d591b7c412df2803f2598eee47731b7a23f46189b0. 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/ZA95J2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392b680434da8fc2b6809e60968fe85b0d2d4b3241337f5c4d46aa2d9970c51f. 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/ZA56E2315026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff92c0bd4d743679699a12c6e6736eaffa35a3b2dbb07ba38225a8adddf5c6ad. 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/ZAMIV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136413305f218dcc13d0877278404b969817e37d70fb70436a3886fb7b21d58d. 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/ZAMIV2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb2f32f773775c64f97b78d641707c47bed648416b9208ae20093ccc19685a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAMIV2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2a798e1d1299efc0d42cc078334f264b6359b316ee0ba01f5a7a8b461ab613. 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/ZAMIV2200009.
FEZEKA (feat. Zuma, Sarkodie & Pabi Cooper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82efd929d953a3ca242e9839c29c67753fd9be73e5664ee10c5a7a44ee57f5c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZAMIV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de58135563d15eb4dc285c371a046060fdfdc010ea8f2ef5af6ddbe70571d67. 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/ZAMIV2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8c9aad8cbe84546f30fd91afc5a535384e8b2a087f15eb126b7288fe808c1. 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/ZAMIV2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7e6d5dbabc3fcbc38bba3f4f6d898ce2be81028b991db220ef4cdb8e450806. 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/ZAMIV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42644088ddb6353d5b7f4d28a236ffc201b0f89a37c3f7914cf06d7bcbeea19a. 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/ZAMIV2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e17994a57b1721a6a868ee06210b623e79f7ded7a8ba0f07fb636639f5e8a36. 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/ZAMIV2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4913af364a0ff57df86f7cf3e90f69e2551f6bb68c2a57dbd8527e5db21118fc. 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/ZAMIV2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5e3f0cc1296f33b98af24ac0ec45bdfaebb5606ac910b66bbfaede092e825d. 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/ZAMIV2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1d7e76161a4f04ba82e9bbcdd698d2eba4ca4daa7d52a0662fea47beeac12d. 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/ZAMIV2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8d0959798f5e736b47df1bdf2e5166978a6c2339ad50140a3ca23c1f03e570. 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/ZAMIV2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1969c2e01a35c9f09ea6d3d646132a1b8a92dff87f65bf6a9449127a399b82f8. 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/QM6P42479888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032938d48603750ac5f13ea278fdecac42d357d11f23c91f43f942f832ac7ffc. 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/QM6P42479889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a2a35e15b77cca2cce25764b37ffc8143833a426e43e7515849b5d2ce76b9c. 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/QM6P42479890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186382190077cefa276236ff3dff170b997cd68de959ebdcca11df6dde761199. 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/QM6P42479892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63dba4aaafd8b4526dcc73c2195a221347b59f95a0f9c562a35bd6b0d5bce0. 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/QM6P42479894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bad60e11132f2204b07d287ba9c30689aaa44f77b35bbc26a90f15b69d058d. 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/QM6P42479895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eb8d29480ef83ff0dbfd7e4f487883e851c12059701d6f5c1df41fb3ab5ea3. 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/QM6P42479896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ef81b6a91901933089a2ecaccc5e7028ead2c3f81c683efadddbff28e99546. 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/QM6P42479897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8152cae4b917a5799f533272b7d41479a99c4dc4151f0805ab00b78faece3ce. 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/QM6P42479901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b5bc5871eaf9925251fb96dc16dbb6eb136f6c8c85d37254436cf98d9a9756. 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/ZA95J2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f20345f114955218dcb2f6c7382fd56f1eecca4e0e6867267cd3b497ed137b. 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/ZA95J2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15131013f79a8737674e41b3ddd4ba9955c0c53058ea6da265fc1b09745d270d. 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/ZA95J2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa0c5efaf6fcbc5c4378785ad7ceef80324ebe56c101b9ee5916bc73c163b76. 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/ZA95J2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220af4f286e220913049efd34e7bb90c61a8e86f5f1c43b0a53a3cd2ea7dcc98. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ZA95J2300090.