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 0x5e8ff7aaa95693274c6c76189e407d190bf99ea069fdd6fd53431b43e612f333. 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/69e2578d-c001-4d6a-bd77-7dff02610790.json and https://artists.proofprofile.net/proofs/artist/69e2578d-c001-4d6a-bd77-7dff02610790.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 0x4ff4739b8f888e0714e367978214aa7c3d58c99de537c010e880090dfbaee2ea. 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/ZA7RU2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8311414df576277b72cf7a8cb0c91d459270850dacdbd5dc5772d1af6afa76. 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/ZA7RU2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94001d71941f100d9ebc3188a17e568fdf4892c98f6401d3c4985eab0b59e8f7. 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/ZA7RU2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49ffcc531220b8d928f253cc0e65374c4328e3aa155b140eb2b1443f8c24ce5. 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/ZA7RU2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f08736fe77b69c463c56f683113fb3321dddb8d33df09e7a65ac7baa333e6c. 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/ZA7RV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1744850a265119922dca0dadf74c0de05fbe2df2825306d5c8f20ec52daa2367. 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/ZA7RV2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210006596e2e958dee98a705efe431e174f5f0245f110e4789778e08c686bc85. 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/ZA7RV2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6cdbe4b5b06b8ae97d2c59c79b94e98e893093689d0a1040460b6454c1a748. 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/ZA7RV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15ca34a0a6f184138238250ff8e20c870514c7db0b2ffb0417053ef0eae1f73. 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/ZA7RV2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d8f062970d4f9f11d5625c3a9343496cfe7114e6dde3b89764053cc48098b. 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/ZA7RV2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc56c6f818ad3129f3c7cfe83b747eddf7ed8c113a7965a1f4c6f91f3a59ae8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA7RV2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2283c143a609190fcc5b4730c83fb23523c11813e5533000f27d70d3274b90b9. 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/ZA7RV2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7239b295a7970bed820f56a657ae829303c2aa009bd0a5694604f6be0acaa4db. 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/ZA7RV2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ca16a2acf5d24fcbbb9090e0c08b53cfc0b98a6b0e5ccf4603658a4979b9ab. 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/ZA7RV2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c6f13c949a9a3f89e053d8f3ffd4995ed66c56f6a886e58d3b48f351a72046. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZA7RV2200014.
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 0xb412e2731976e6b0e39b8b43026b00b2f8d744416772903c7132c1ba8e527791. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ZA7RV2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644dbd4fe4393b86829095443dcb13cf3838744934b6fcd5d863de47086ff6f2. 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/ZA7RV2400032.
Ungakholwa (feat. Madumane, Konke & Kweyama Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a9507b94ea38a12b069a3a777ce3b4c911799c06802d5d6cdd658781404c48. 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/ZB88P2300304.
SHELELE (feat. Ray&Jay, Effected, Triple X Da Ghost, Rhythm Tee, Kweyama Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af3edd773b6c5370d70084716cefed879f6b89c08cd2d02f4f91e2e2b9ed1c6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ZA56E2315000.