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 0x982c8104a2fffe9144ade1af320677cac2a66d2c16634b6693fad198dcaa61e6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81d5d7c4-ae22-4710-a948-35b83e537850.json and https://artists.proofprofile.net/proofs/artist/81d5d7c4-ae22-4710-a948-35b83e537850.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 0x38c34d053c497003fbc6ab80acbebe89b937138b011eb1b9e3d0077eb145a8a7. 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/QZHN42377938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ad249fb4a8173b23731106c8dd6e98835241c159a9825b10ef87be53b64c30. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN42377950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9839f99c7dc78db881f4b6acbed7c5c211c6aa3b2667261246506cb8f44092aa. 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/QZHNA2330092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397513d2399aa850dd958e9d30abd0e93b51fb50e7d0b28c4e19a8aaebce251a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZMEQ2397618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513ec52b8391214ed9908ba7a4ce7f46676325e1015f03a541084057600c52c9. 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/QZNWT2310503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9839f99c7dc78db881f4b6acbed7c5c211c6aa3b2667261246506cb8f44092aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHNA2330092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3efb3a840d5ba250f5dc4ab8685c1cbba6f2602e4f44edf7657a3744726fb5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWZ2366919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5c22ac0240b781d706e546223342da127449f9ed813cf87bf9af0dbacc056e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB32326105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da5aa93b28e6d453113035803ed069cf4b440d24d5bc1bede056d7b7f016be9. 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/QZWFL2341478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6b0d734e177df7b93431b0cfb3d239b53e3924f8f574d406efafb0fbd9715c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52475578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ebc54ad7245098604be781b884f87e3e82da39e37503d9e0d45d5b81e486b1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNB2496778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94018eb2eff289a0511f47016d390eab64ae7d68f6a741d1824d99e462932b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWW2492703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03148be504be3f422379bf1e656e4ce543348c0094b688a6f3a662b391983e05. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB32462823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f5baf0811a9afa5b17c947821976d6d2f4263b3fefec9d5ea6c94400d552a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:30Z), 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/QZTBD2458214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1844242107484f3dbeeaf3b1b8e0192169ad2262d34acaaef555ae9d5b9591d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFE2431851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd060014ef5d8be41d647c56db1b750261590bd0448b3618957965f1bb7107501. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZWFK2490389.
Yawa Lembewu & Ngikhokhele Bawo iTende Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f117fb4703b8db3b2b3202b7d2ba9fb25ec0df9df03cd8a18b8009a6b18b1a7. 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/QZWFX2495362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a6a2992eec9cfb0b2e6e1d2bf2bdc97213dd7e23b8386d0c1aed3e49f6062b. 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/QZZ7K2415455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc57b89c883651b3e7f1cb78110c5f9ae168404d94bc31970d08b72fd196c0d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7X2471226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e60f7b97f4b82c04c9cae9c66629749031903d1135dba71d0ffd44d4168fbd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHN82554683.
SHEMBE: Methuli Mlungwana (Makhula Kancane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3d2590dc51eaf3524d6c561b1f00bb06b4922151109f6adf54475f9f215f99. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2574559.
SHEMBE: Methuli Mlungwana (Loluthando Lujulile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7b91febd6747a79853c8e870e1200e1386abcb61c4be96044ce2941fb9c3b4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6L2574560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a03ab4ffafb456db900f29f12d25408a8fe7eedb29832e86587d2ae894def87. 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/QZK6L2574562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5180651097a6f325049e53e60cc12fb15391c4813bb6f2149878b24d0aaddb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEQ2595205.
SHEMBE: Nelisiwe (Ngamemeza Ubusuku Nemini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bdaaca6836a685c208bcb0cec35815b17e43d2e2cb888611a15545dbf40f38. 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/QZNWZ2562947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669914dcbe62dff7cb9709e697365e0a42f25f14a0f9d1a4f0aa3830963e123c. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:41Z), 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/GXBNP2508773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ababdcc12c8ad7deccf4e33612f5d04e31d49215172ac8df0c9202bbd520e78. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F22542682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfe2fa58a4256ccab1a573d41c4843fef2bf27522cc04e90ff9951dbd4d2873. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT3FA2588343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970b05f8c777c148f915d242d46dff50d1401ca27803ed2c11c07055b8ad6b08. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QT3FE2514291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec38a2496bdc031488e541970fb47cf9dc53aedfb5434e298a5309cc855ea20. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QT6E52533627.