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 0xcd34a983c239a5fb31d5684023a9a9b4419eb91ea1d4b19205a23918ec714738. 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/9a984c13-6b97-4819-bd65-f91d5958673a.json and https://artists.proofprofile.net/proofs/artist/9a984c13-6b97-4819-bd65-f91d5958673a.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 0x45a4e9bdc02aae07acdb02d1eaff2ae9d9268c05e5515dc60c0cb2b9ed869610. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNMX2260565.
belt gang (feat. 5kmadmax, sakchaser5k, baakendchild & runchodayoungan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb653da9e738493b1ce07bcc8d25489fec39e8315f737bb5e52f7a8486e996db7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZJG52365605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fae070d541caebedc124dc04730f9ab6172da56896b2ac768307cec6e61224. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZLL92398473.
put up (feat. lubandz, 5kmadmax & baackendchild)
spot em (feat. 5kmadmax, 5knoface, baakendchild & sakchaser5k)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e608e9912e2e216986c92a066e8f677461558fa174a12f680221726887615e7. 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/QZNMV2313627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a31bd017da739e491fe1c865955501ce93de3f576b74a3181325d847773e9c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJG52462486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb536e81c20906385e278c0538f28a0a585707a987eb94ad558ffa74d2c1272a3. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZMEN2426788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bb04b676db4a1cc74564a9e7edcffa5bd6597b63a404c169fea244175d2bb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USLD91762093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c756d121caa3831e2a026bc24a8c6f5be38d894bbd02beb3620c7358acf8c8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USLD91762612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bffe963cf9cca23a1a30294bffbb4f376f04ed154529881d20b9fdad17d0e5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USLD91760275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bb04b676db4a1cc74564a9e7edcffa5bd6597b63a404c169fea244175d2bb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USLD91762093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edddd946bc85d90b41c9916ae34f74cab9873b86fc139b77879c8ea33d58074. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USLD91762619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899aaca7293b4efd302ad5b4d1d20eacf2291ad0e15c3d870dc00d0be6768975. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USLD91765194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5879e069d7e1c38e08a40e6f0575a84c8a4fdc269ce748a2b2bde53a420a8019. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USLD91767480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52db67f6b3f16378658590ca53382117c0d1931036119a4de2b386b9448862f0. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USLD91769030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dce3b062a398c7e22182a4e90d0b33b51cd4eced19fa43af18a9170149c226. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USLD91769031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200da62dc27debcef4e6b4d70b48e4bf368b3e24a7e21fe1890005a99f04e219. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USLD91769034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a6eb96894de90ef62a386cdd795924af0ef66ed4f28f72667ad70ccc9c31a4. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USLD91769037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6cfced50ae4d5a132314fa846fdd5cab4c9172d00e53e8784dc264befa6c23. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/USLD91769038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b5d1ba06b626a86356297c717dcb97fc66774769765a3ddf4fe4f9705a770. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USLD91773960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78ee207a70a1739b83b6cad798d65f1f87235cb7171f6a5bd95a5ba30051d85. 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/USLD91775758.