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 0x8ef9088fc7d1d9d968c107c2403df4ebe90e5cca0a651e96dcda8b56a6bc1ebc. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7086bbdc-b957-448e-b096-8061b8426be9.json and https://artists.proofprofile.net/proofs/artist/7086bbdc-b957-448e-b096-8061b8426be9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Glöckner von Notre Dame - Gesamtaufnahme Live
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 0x2a52f6b307c965285c3acfe7237981b7724eb6145e02599ccc5b2742d23e0981. 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/ATM892303676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd3a8f2c28497df7a1885d85f7154cc83a964c99bc54ba7edb16aca36b0eb0b. 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/ATM892303678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485e49db61f32dfb24da2ab57b2ee4ff0368b8cf57609d1ae2eaf188a40446d0. 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/ATM892303692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf39d5ad07a77d1de826989162443d18900524a765abb03514dbb2581ed791c0. 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/ATM892303686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387ee8ae662eafc4ca2b9217abe738d5404588069e391fe55ee52cbe98a5590a. 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/ATM892303675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ef69b990f23e052e8fca3cbf3ea6ac0d2e3363d565efbfd6f1cd1d1bb7f51. 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/ATM892303681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919539d5029e84a0a07c05af5e84456fc6d5c0babb8411d340227c15f509255. 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/ATM892303704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789f182f15807897eec965a5061c65124e166d477058ea42775138eef016489a. 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/ATM892303677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c79cb3b914eecb08f6831142869525acdcbe52fc61f8cd08002b3f84b28a11. 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/ATM892303679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4317eae884ce7b74eff4a01100649c9d34aa224188ec949d48e80c0a734fd07. 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/ATM892303680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5373bd8b0dd49bf39b5ebcacb16dbaed2b7eb7e2cdfa873df28ce4ad444796a. 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/ATM892303688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7517f9d07af962c759fb1e8e4f53ce9ca885c4f1a190459ce88a4eecdb0bc1. 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/ATM892303694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855d12008f77624962f036e17473aae30787010d2b056c0531972c27abdf390. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATM892303706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f2b6345d02f852b06f90faa61a7ea6162d446596ce8e2e6ff29f6e38b8855. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ATM892303682.
Der Klang von Notre Dame (Reprise) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268699f72a7bf81ff3e56bdda0bb0c95a430e3f6b3345f44a8cb6599156b2e80. 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/ATM892303685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5ebbb7f26810f9915bfbf43e54ae20e7676091341767b5e366338688b66cf2. 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/ATM892303690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e0fa4bf474cdc29940082d5c76916d63a3da608e93cfbc1746376c3e54f8d. 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/ATM892303693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae240a7c8d2e01edbd7068196b59a38f0dee48e4a1eaf5af23897551ce98590. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ATM892303683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a8e1b20e2bf8a17c16cc6c38988932d77bf36cb31b15f16a9c59318aaefa76. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ATM892303691.
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 0x454f59b0a884a20a7862c618906d9e261a51fb24e2ebf1e7b7f13a651bead1af. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ATM892303711.