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 0xc0e5b7601ed5c7b345feb0396d772af02301f7332ff8f0cd7bf7bdbc9c93cd4e. 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/eb389d09-4669-4586-8990-7f7ca47e5488.json and https://artists.proofprofile.net/proofs/artist/eb389d09-4669-4586-8990-7f7ca47e5488.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 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 0xd352c1ef631a970e1b5b4df339a428b35a3a320c72acd5d1b379f2f06587313d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NZVS02000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3d8f470734e5517ede5cb706be0a624fd11c9d484af1875c672c1e336a94b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NZVS02000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c936c8923769b8ddfb0765634a442c80f931748de3a3b060641d943d46963ee. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/NZVS02000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0107524c0f9bd60e70b8c4be6cddf46a107d46131a79b68b7c518476df3c7338. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NZVS02000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a356232742e84b975555c0accddcedc604b30e6d809515b18cdbda0bfa54d5. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZKSK2150193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85a2e6f91eb48757b76fd1779e0575cf54293a9b9e08ef99e702a368c3c0544. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZKSK2150195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78a24bc1b92538d58e46da977af8a0ef74c5f83614eba0803c9438fd2bb33dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZKSK2150198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c1346aedbc2a39300e53411dfdb62e01f7e06b98e2ab3db4b3fb512c66e1f9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/NZAM02003167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfba542990847ea7db291c757af59304104088071638fc26d04ba3e0ef95333. 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/NZAM02003170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eddc21c31cee2e3e1bd75f45bfce0fd8ff3a5943c91035e5704498cbd6378f3. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZKSK2100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fec9ee2d416260883012f50a090a138b07ac42a4b786a47382ba85088ea3771. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZKSK2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f56c0b9fa1924cc526cdec374c266f2e1fc6ab7f71af0c1c98927c1c199bf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZKSK2100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f20d9cabd84dd433d9d85e9d9644d8be47b8b85e0d2631955b4064914fe28. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NZPB12200052.
Sa'afiafiga Ole Tamā Peleina (Muagututi'a Amosa Fiaalii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6bcbbc80cae068d7053f273968084af43761f449b67d89665afc3fc0005af9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/NZPB12400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6caa762c18437a9551b2919e426fd56fda6773d897939ad111d16897afce97. 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/NZPB12501079.