thumb|Philip Potter as Frederic in The Pirates of Penzance Philip White Potter (February 6, 1936 – November 7, 2016) was an English singer and actor, best known for his performances in the principal t
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 0x5de390b80729b6db3a955bc200ea68134217b6368c1ea8896e802eb12adbebb0. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa3a3e19-dc27-496a-b154-3b331ef13570.json and https://artists.proofprofile.net/proofs/artist/fa3a3e19-dc27-496a-b154-3b331ef13570.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3. Today we meet...Ida was a twelve-month old
Gilbert & Sullivan: Princess Ida / Pineapple Poll
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 0x728a916e6fc7aa4ad428198a8691f438b3ee9b329c6c50d104049ce1ad04c459. 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/GBF076542004.
6. P'raps if you address the lady most politely
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5050f7654ba7b7af896056d0a7b4ebe2db43554817e56680b1daaec96c435df. 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/GBF076542007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf1327c7f57adc4ee25c31a5fc685cc467d1278ea1980535639eb1b1b954a12. 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/GBF076542013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3917e0a065403416588be2138b2bed92cdbdd3282d179f58bb5aae83832d9e3. 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/GBF076542014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500e8857a81b99720ff8a88e970d8f3505d60210dae646254668bf5eaf28d02e. 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/GBF076542019.
Gilbert & Sullivan: The Pirates of Penzance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac5e5770ed57c779946f05f1fe171f378d01d596c0fd404715588398286a2d7. 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/GBF076840105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f482088e4cd5037d477d6e602ac78c7e306cdb9a1426994e751cb12777da56a. 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/GBF076840107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddca2679e0db1aa89c587ff22848f644a96ceb4f65f50fe46bf7e78e67adfce. 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/GBF076840108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71740693982fef978e6733aade5779d5af412f1301103aacae3b0371b6bfc5d. 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/GBF076840112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff938df3f87cf863e87abb430aa37c3598f2432b7788f4f283f2049578e4b73. 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/GBF076840113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2285c53f8d64393382d101d00f3725d3717039f11efcad371fe4d5142e862c7a. 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/GBF076840116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8edb4dc41568d2f70516a91a37d2c7c97476b448826259507f76a1cb7244dff. 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/GBF076840117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c0c3cf551071af99a581aa9248f4ed463e9d033eed1c2578217ffee7bce47. 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/GBF076840118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec415a816d8c0f8ed3432cf5b0dc06342ed02ff000c0e5dfbce42a23459de13. 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/GBF076840119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dd934706ac659b92310b40ca1025c6e404d1f99d5a6839bec0b4b98c402ca6. 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/GBF076840123.