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 0x38fc390c660edf22a44f6df988486c11fca21c7c498ee0dcf5b7a307e9a1d005. 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/f68d8137-7963-4ef4-a84f-947042a530e3.json and https://artists.proofprofile.net/proofs/artist/f68d8137-7963-4ef4-a84f-947042a530e3.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 0x2b7e44248db03707c1dfbe6e9f134e6d8094e4f685343a48acc7da18c99d5e02. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZ7D51700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868fc356aae6516fcc8c22d525a76ec2303d3d316c1bc024d1fb94a564a478b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZ7D51701347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0557961c53e8dfc0f457d09d34600fea9196de1e2b86acb811d905b53d201bb4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ7D51701460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e167d6b31b2d21d22f4a9910bf90d98b59748c38255b16f53d068caefea0f84. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ7D51701466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896af3252dfa0dd73dcc6b4e7e9d990e7ba0269c181b17956df3c5b800d89b5c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:20Z), 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/QZ7D51701467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2d051c38a32dd3082ff616755d7402e50102d6559312cddcf4b3f37a56d027. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:44Z), 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/QZ7D51701443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d889d0c172c0354a868f9eb70edb0e6924cfb7f45573f27fe4987f6c90547. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZ7D51701445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673977d1a4033e1656c95df2aefc53dd73903dbcf1b5b81da4d156692f8535d0. 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/QZ7D51701446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf327e0c74b02b6e3ebfcab031545bface2d46610d2468f34ffbacba248a3a929. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ7D51701429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff14380832bb3718117f4963c9b03e7ff029e4edaaab5c89411c7ea65608749. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZ7D51701420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7629e05aa9c3920a48a1cdad49ff4609416992e25bffec48e45bac759c4965a2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ7D51701425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56168fcde210bf2109586cd32dda006fbc31a39d9279e5d31c4df457e6faf65f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ7D51701532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc5736f353fd184fa322c12f4515afbce7e4f68e694ce878c567fbc0474d09. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/QZ7D51702091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67148152d9fb25c319c5b2d275e48f33c09d8895dabab7b40b298cb11d25a51. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ7D51702158.
Omwana Wabandi (Dj Horace Amapiano Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd98ee2a345692f56c5f0e3a16870ddff7ff79e9a7e0b54ebef8bd9f50b8dfb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ7D52100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de813b93ff5d61d181dc75be8fff92622b2b6ce19209c4a311352a86cf93d6a. 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/QZ7D52100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132dce78561759bb93547dbe5f90d0e418040f642ae0c3b9942986b53f5a51ae. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USA2P2327958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123b9f44f334f2d89a7791badf8b735f56fa8dc830b3173c9223a8127d6d44ac. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:33:15Z), 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/USA2P2469453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea784e087a403ca070bf965cedc71a92aea49e3fbbf813b3994f2cfbe962ed. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9M2419765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32213b50ead41a8100602688c47a300729895562e26a69ab47997f1077d2c96. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USA2P2510948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c86d7124260478d4e3da24104c549c086079fc3e338acf474f2f610decbde17. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM7282567604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e916b9c0d1b58df06e40f73c6cc9a79ac54a4960f770a69424a775c318fff3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92505214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85463fc2c79b310dd07c64a6545d274d1374504c8877ba9ac5bb9fd58e94f116. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QMDA72523257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f15728fc400b04a128135bb9282f19113769f3b1fe1a9cc99f4efac80ab383. 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/USA2P2550403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a75da4e7a8e10bd1363420247f7320b80c24e41a3066f536ec490bb1524272b. 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/US23A1564510.