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 0xaa481f1c24f33b05931f00584e20eed973e09b1d8be8e81e0faec2345c021043. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec3ecd5b-af56-405b-a734-9a3973b1da17.json and https://artists.proofprofile.net/proofs/artist/ec3ecd5b-af56-405b-a734-9a3973b1da17.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 0xfef32026469f2a4d8e81e4cfa199a50fb70ba5075727db8f9b749d1a90e2c24b. 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/US83Z2042992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce433415abbe5c43de2519470c8e7fe537d7488a4e51c1cdc96f80e2712d96. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/US83Z2042995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e31335caeef43008b0900434ab46222aa5adcdb6af790d75fec6433c566fa9. 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/NLEH52100004.
Inner Peace (Divine Music for Meditation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9908f0103e6192a51e93fb807d6b362d368190792c8121bb181746efa269ed0b. 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/USHM21960862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a571ff9d1cb0c5a9dcefae587a00b81289d2716d51c6095fcfb12342c23c92. 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/TCACP1679681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea42ef3168b72785cb099be1190a60da7e3954c72be3ca9b082bb9f4cf20ef82. 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/TCACP1679723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbbec98b7b8bf7d7eab6538277a786be406b30a2d81036fb47449e7101d8dbf. 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/TCACP1679773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827ccc1e53ecdf9e442e50b3ac69bb26f47a6e8d8ca32f0a066c9e454c04c278. 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/NLSN81100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ea9255c52b271bd9d4c776a2107b0ed91acb14dae33330258cd6d915e6fc69. 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/NLSN81100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fed9a493d395ba2540e1c904f8fc2a5b174fa85540d4469fdce9079ec2daa49. 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/NLSN81100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac84d2793d2a0d6a0292fcc9273399c948d8829125edda5307725d33dbe2284. 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/NLSN81100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acf4de85218f0322e2ed215e75d72de2b9aeb6ea1e9df9a23b1809291b5f470. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/NLSN81100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff92400d0b4ebf6c2bdf6e5d3f4d0739424cad2f3402a2b163b87f33b57eb9. 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/USX9P0799844.
Divine Music for Meditation: Song of Life & Breath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69f1a757b8dfd82c7d7231d1ad4a74137674f87cdf9bcb2f89af46b980f5b72. 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/QZK6Q2068036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6180eb4551abde90b3f5a0e9b52f12986474eae02adb541810c18b94b0e5f09d. 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/QZK6Q2068039.