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 0x12c996bc75e0f9aec9be4e87dc3927fbc4cf8287beddbde68f6c5e549affdf7e. 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/29a79765-f98a-4727-ad88-77eaa6839bbf.json and https://artists.proofprofile.net/proofs/artist/29a79765-f98a-4727-ad88-77eaa6839bbf.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 0x7fca704e477672d94f947fac2a0c70c8097a65a086861fd8f68e0962ddc8020b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZA56E2419784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e0dc8e4bbd4d4ab3f0f7e0125d78997a2e0c1bb412560590222bb674ecf5c. 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/ZA56E2419783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca704e477672d94f947fac2a0c70c8097a65a086861fd8f68e0962ddc8020b. 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/ZA56E2419784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aabd9fe47d23b9d2c8aea5855ba586708b263072e41091fc0cc362c06a039b0. 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/ZA56E2419785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48133797f94fee6c0f05fff29e33be61405613f76f0d9c906ccbcfc876ad417. 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/ZA56E2419786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2f2bd3cd6325e5f8208b6f935ab84a9f30746e03c33e217703a9fc19e6c20f. 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/ZA56E2419787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a5a1826c9d3ed51baa54157fa3ad8fcce80c6b36b88fece9a19373d41e6acd. 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/ZA56E2419788.
Kuzolunga (feat. ALE, Ciniso & Wesley Keys)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153374cae16e201f7476881fdbc13c7215c74784bfbafcdc8807c825ebd91587. 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/ZAUM72400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2badae8803db0644eea2eaabeacc812f683a9ef2bc047c4841329141262f39ba. 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/ZB80H2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb326ef33040597b6724792d396a1dee9f77f4f74821aadcc49ec1cbcb813b100. 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/ZBJNK2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe172d84bc9552ddf7355533d08b23fa4e92bf72a37e24e051b4620984e941c65. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1572643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526b78b78c43e2d2a8bec121537e0aa32dd56f35933877f5c09ff83e6b92011f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMBZ92494869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023642441c449019a9ab884601dcac390d28c133392e29f0cca6d6fcbc33c49. 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/QMBZ92494871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2402267f21f1dc656f55124acb248de245a9a3c5ccf2dc55104df2e72678c1. 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/ZB2312200029.
Uthando (feat. Villosoul, Smash SA, NoxieKay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6a9cd1e355b31d2ddc4eb022a35ad9e2ff5a8b61dfe4ab4b50f8dcba6b3df2. 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/ZB2NW2300013.
Indlini, Irere (feat. Smash SA, Khanya Greens, Smangi Mingle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d5eb9de6751e61d8b9cacef4d5e01f2014c9e42c7cdefdef13cba379d8d37. 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/ZB2NW2300021.