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 0xcac400ccd9575f2b61791528cd33c1220c2e8531c7558225ba5d3a73c69a1a33. 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/c362da32-9e41-44e5-bff6-294c90bd0537.json and https://artists.proofprofile.net/proofs/artist/c362da32-9e41-44e5-bff6-294c90bd0537.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 0xf0aad4b38d09e2a64c2057fa598c013d9d77632870b42da931ecd13ae5b1321a. 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/ZBO4F2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc470586bad5b5ac337bde275912e3f631b78c71d924c63f7f3313594a2d6fcc9. 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/ZBO4F2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0358b2ab129bbd44078bfde7b962a2d1f0c32fcd15359719560eef47ee5430b. 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/ZBO4F2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f5cbcc8431d882e76dc491080adad7d2166436eb41f3135d0fce9c26e54987. 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/ZBO4F2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e45944f1a0dd41a659f73461988875ab49e15e9d49e0857f3426694a3bcd820. 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/ZBO4F2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe26cad28592ad088c01819970b179955acb49c84058ab173ddb574ffc04b1. 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/ZBO4F2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858fa6e24f78c81d78efaca1afcff6920e8478f5473b91db0782c50d7f439f1f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ZBO4F2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5889c1a90172e229e62152348e7265aa10c3cba547c7950bb1037f3ead84e44. 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/ZBO4F2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4294d05d701de62b7ad7afb1eca29d3faef09848dde161a963fc64705ae1ab. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ZBO4F2300011.
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 0xb1941ed16032fb40281409f90e39f73e9d861a97f6b910b5c1f785fcfc71b091. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZBO4F2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63834c312bd3e3b298b4d43cd7069c4db1bf6e7c7949ffe9405b704e6c09af1. 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/QZTB62319894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf330fe441f09a35a85208aa18a46e577e8419e75dbd330969b7a54e32d49ad3. 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/QZTB62319895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1036dfaf8403629e2d7d41e94430e24f251a9fef0c225adce2fa7ef1c29b586. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB62319901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686942383e3b15fab0eb5fe66c69a7b2f022433b9b20cc70f6d183cc055cd3c8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTB62319902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6052e896f801d702a37640095e25a748810af02887969f787d2f63b090d967. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTB62319891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272ecadb8829a047b3c59219bb5a7b923646be63527256216d3ebc8c9f2d61bf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTB62319893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56361d92e74472440bcb00d11bdde0d8c52919471ac9e875a09a8d1c8dd71d8f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTB62319896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87dc2e9de410a07618531bcec9ffb58361455660cfb6d9515d85f37b84fa169. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZTB62319899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e7c59c205e3459b65cbdb529e8aba2fe54e2a39b3327701540e227e0659de. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTB62319900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ca518d5a1f8e97041c7f74815cf99daa4dd8aaea2cf0bf553b728e849fdfb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTB62319903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0521456f76052934f217a151d67993530b9a3c8f4925be7159c30c291a1085e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZTB62319904.
07. Mlungu wami (Edited) [Edited Artist Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0dd1af11a468a574ddf6b39c6831fcb21eb6b83a74d0a1f126e7c2bbb3162. 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/SE6I32236734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a894e742834b5cd8d9b7ecd7fbf3a99dbe865fc5b997fc0db2d56fd44028ab. 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/ZBO4F2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf84cc79acfe0e334557d3047574656d890e46b07bbe33681c9323c488dfb3. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ZBO4F2400027.