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 0x225edd9d998947063a8f8b88160f4ae0be6f145c3879dab973c42eea49eb541e. 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/cf734cf7-1864-4f41-baa8-5a43fc1500bf.json and https://artists.proofprofile.net/proofs/artist/cf734cf7-1864-4f41-baa8-5a43fc1500bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nalingi Remix (feat. Sjava, Roberto & $pacely)
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 0xaf878aab47d95d116a62c9539e138a1d9fd656268ce3cb44a707e9c2555ad877. 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/ZAX012000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76c3912198bb8dc18efb9f4db13cd2057087b4a15253f46223d2a834d01a535. 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/ZAX012000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454ad89088fbb004cab4ec32f92b788556e4fb6fd2444ee90479229117e63f9c. 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/USUYG1519482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaebb6704d104e68ff364758994d2f3f94f10ddb351769ffaf53e86824014cd3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USUYG1711311.
1 000 000 Amapiano Seconds (Kings Of The Surface)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740f19eb97a02926130933c97cd0610877bb614b48b3c0836b89f62875f54b3. 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/ZAE3A2100064.
Solo (feat. Gemini Major, Manu WorldStar & Navio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ffae2731e9147cf3d63e6adf8894d0103af7ad6289254783d8965ee39b283c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFMF2305990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa65166161f7e4ac859ac24daf9585f4ddf72a208e67670c4d2b5c721bf7576b. 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/QZES52298295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26283b33ad1fc8a97cb9e281695798e4e4c73ca70dce1e17c2fe80ebb17154f6. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ZA8YF2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b60bb3d460a6ba458ae053bdd5d5801f4dda342bfefdae79c1518b4725dba7. 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/ZA8YF2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4934f0f378d52b92231ef432b0ac226168110e5a0597962460614360d6371080. 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/ZA0I42000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc154eacf02e357dfea1d19841c0d46acd18e4712f9cd9798127ea160bdf5f811. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZAC012300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae7ffa2a66fadf3166a28e93c9b0623f906b04060987bb6c3e24f2add39cf6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ZAC012301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b7d15ffff0aca8b2675037fbd78854ca873c6b45ab6af6ca6ad8e61c9dad86. 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/CNZ632401746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0eb0cda46d23d5e06246bbfc677fb9ac4007873c8d62ed7bbb7e0a03a9b3b. 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/CNZ632401744.