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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d17eb41a6cb2758de7fae911f196e2135c901d2928ed1ffafa6d6fb7a400f88. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a19ee42-c3ce-4b29-b8ad-b52685b8ddbe.json and https://artists.proofprofile.net/proofs/artist/9a19ee42-c3ce-4b29-b8ad-b52685b8ddbe.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6144f26784ce9532b28e22c5620b7c06acfe151b31b954e63f80b137853867. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:03:19Z), 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/ZA4BZ2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4fc53176393bc9627a3b951e0deef8c359aa14d991636e93cac41710f6aad4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA4BZ2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f304e0b6f5f74640c3d2ce766f30f03e118b303df2d31dc517293b213e8435. 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/ZA4BZ2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c6f9000fe0062126390a36a538c28991f3110ea0f6632d4beda510bfb62d1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA4BZ2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8857ee10731821491ac3efba626ab7429de152ddf5955becc052aca8e3370c3. 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/ZA4BZ2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484bcc38c9df9893706834ef21f7930a6f3b215f5b27bddee60f8e7dd5128c4b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZA4BZ2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e93d784fbc52dea0ecadc31c21ee4e574a4518f6d4da8536cc418ee3fe0d8c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA4BZ2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeabb2220323316f0cf37412cc734b1bf0b47d944075b0581fd3dbe9a5becdec. 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/ZA4BZ2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314f7d2884781dca979173262bc81d62160ef5c7a300c8bed06433b7b21fb2b. 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/ZA4BZ2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b266e3be771afe4f851c1cde2e09ce64cecdf00972ba10170df15f4da059b87. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:52Z), 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/ZA4BZ2400065.
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 0x75db875efbf372ea3c2efc42c6514217daa07c7324b06b3c670a7bb557938ef9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ZA4BZ2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70c8b4027d2af83c051161c9e4a9b5c395c4c2524c78d9602bd2362cfa0b0c2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZA4BZ2400069.
Mama yoh (feat. Mellow & Sleazy, CowBoii & Scotts Maphuma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db07073c5bbb8f329dcd1493f2c375661607bf0257a9a5e0de0c7d83c08feb8. 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/ZA4BZ2400075.
Khuze (feat. Ney, Scotts Maphuma & CowBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d9b7aeabd5dda006ec4a37a52a2a07e87c8fb8081172cc8b2e465ba7292a6. 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/ZA4BZ2400077.
Zimbiri (feat. Madumane, Ney, CowBoii & Scotts Maphuma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182de09a66137566aad793bb624e9a2b228e626752bda661f007c3a5867dac88. 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/ZA4BZ2400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb530a6594b9a7fea1eec27c1251671d3d9adde11a002a68cb2eb2b867bdf362. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA4BZ2400079.
Wololo (feat. Scotts Maphuma & Mellow & Sleazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915017d77d068f4a2885daa103a2b994af7d4b6528b9d0dcc8ef8b8eb5b6410f. 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/ZA4BZ2400080.
Bad Decision (feat. Uncool MC & Mellow & Sleazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8f571ba8589fcd346aa0f81d53d451c11cb327ea79eec619c1fd160b1bc2d0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZA4BZ2400081.
Sheshisa (feat. CowBoii, Lastborn Diroba & Felo Le Tee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde30a3801b9e4f4787eec0ef95bd567f818e2913d6382e52d51bed838f19820. 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/ZBN532400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d314c008b6d592e698ec2fdb4d484ee62d999bc5759945b028f5db6d94cf400. 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/ZA56E2528890.
Iscefe Esimnandi (feat. Mellow & Sleazy, Madumane, TheBuu & Lastborn Diroba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeeb60d1863930c6787b7ac068ba2d6bcc80942a623c6817374ef00046b048d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZB1OS2300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7784706b6ae4e390ae5badd304feb76574a21dc7469445bd5c53321e4da61d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762321540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae8f3ef5a5ac66f559b16d8d87cae0aff9d8df240f3737f67a385eceb1d2633. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DGA072200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d513b5b9eec937e223d47f812c09b34dccf9bd1ea68776accfebffd81a165f7. 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/ZAXP32300103.
Askies I'm Sorry (feat. Kabelo Sings, TitoM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d69247d9f571900d5862583814e8c266714c0787e9300715a7a0cfaf788868c. 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/ZA56E2315420.
Disturb My Peace (feat. LastBornDiroba, Xduppy & TmanXpress)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e1a396180d83bb847cb8ba3397f7dccd6445419474d82286a8d66a0bc7ec7b. 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/ZA56E2416970.
E'kseni (feat. Da Muziqal Chef, Thabza Tee & Lastborn Diroba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a02a736624aec0572091303502829d8c6f214761ec8be0aa1a60416350dbc0. 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/ZBN532400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6577a0e1ca858ca4367caf0aec2681517f6d73732a3f3e6a9c4d25f79b38f4fc. 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/ZBC042400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302687fa653d4af0984bd078b52e6f850eaea838b000443d0c4a6f0f76a496f7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ZA56E2416399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a7b02ca94e3e8a93d93a0a4966995ac57d611e862fff6d2aae7f67c32d477. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA2P2450101.