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 0x02b861c028bab3880ab8966292935dd783ae1824c9b0d6931b0f28883c28ba6c. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec106869-bc6b-4a6b-a642-2a341cf57401.json and https://artists.proofprofile.net/proofs/artist/ec106869-bc6b-4a6b-a642-2a341cf57401.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Puccini Passion - Opera Arias in English
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 0x0f5f3e3a75c841610e9ac2748c83f35cb185bdcd9f406c3a7cecaf43d85c5f15. 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/GBLWD0414101.
The flying Dutchman, Scene 1: Hoyohey! Halloyo! Ho! Hey! (Sailors, Daland, Steersman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc0c0b6160b7edd508a67b0fd81f7fba7ccf365ab17299c0c1398625547416e. 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/GBLWD0414102.
The flying Dutchman, Scene 2: Stay, Senta! Stay awhile and talk with me (Erik, Senta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c4f165b70193be3214ee0cb12d95a5cba777087a5d7f70dafe3b9935c41891. 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/GBLWD0414202.
The flying Dutchman, Scene 1: The time has come (Dutchman, Dutchman's Crew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e609a2e2e73a945dafa34663235d9078867faeb3ed01f5f4912648258e83083. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:32:51Z), 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/GBLWD0414103.
The flying Dutchman, Scene 2: My child, your father's on the threshold (Daland, Senta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5444b6a0e36a563e1586d593068d46d43bbf869ab693542f99f0fc3c39dd824. 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/GBLWD0414203.
The flying Dutchman, Scene 2: Senta, my child, extend a welcome to this stranger (Daland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a37b07ff2fd89dd90deee8cd245a3714912f8db3e24376015cbb01c2e1715a7. 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/GBLWD0414204.
The flying Dutchman, Scene 2: Whirr and whirl as morning passes (Girls, Mary, Senta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ffcdcc5cde2da0b270b3f9aa8b4d0104a684a9910682a0fb955d915862f835. 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/GBLWD0414105.
The flying Dutchman, Scene 2: As from the distant dawn of my creation (Dutchman, Senta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7949c8a9dda838b131fcc56eedf97260647514d4a2a296e4572d34afca760bc3. 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/GBLWD0414205.
The flying Dutchman, Scene 3: Steersman, leave your watch! (Norwegian Sailors, Girls, Steersman, Dutchman's Crew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe032425c835abe5556b6673723116b53fd03b0a0e3d8114636a29811dc1f6c1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLWD0414207.
The flying Dutchman, Scene 3: It's hopeless! Ah! It's hopeless! (Dutchman, Erik, Senta, Daland, Mary, Girls, Sailors, Dutchman's C
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11505be5e2a78f4c567d4bc7da0a6deaf71a7d7c9e91948b2f7f466675d8470. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLWD0414210.
The flying Dutchman, Scene 1: Hey! Holla! Steersman! (Daland, Steersman, Dutchman, Sailors)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf79e47af53ecc901f2082f904f6ae278bd5a751102d87af92843bd5e399d321. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBLWD0414104.
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
Carmen (Sung in English), Act I: Here come our new soldier boys (Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1e56ba0981643aa0c3d7b1d91158f6235208ec90908f84c03cdb8347f8837b. 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/GBLWD0301104.
Carmen (Sung in English), Act I: Corporal! Sir! (Zuniga, Don José)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2f0598c0f1ce24567f803c0bbf2baeffea134428210191663c5ab08b09061. 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/GBLWD0301107.
Carmen (Sung in English), Act II: The sky above the open road' (Gipsies, Frasquita, Mercédès, Carmen, Don José, Remendado, Dancaïr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775ba863402c6bcd0f4d8bc34c260fc5cf1eae81fb9da62fc2a6f9f32fe3f60. 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/GBLWD0301208.
Carmen (Sung in English), Act I: Ah, just look! (Soldiers, Cigarette Girls, Young Men)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8bc8911ac1db65c6cfdf2d57ac2e5facff355c5ee412d7e5c3dc4c319e462. 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/GBLWD0301109.
Carmen (Sung in English), Act I: Love's a bird wild as any rebel (Habanera) (Carmen, Cigarette Girls, Young Men, Soldiers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a7b9c4be1679196d4ae01c511ef1e705ee1e522807371796b8b59dc94e9b86. 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/GBLWD0301111.
Carmen (Sung in English), Act III: Shuffle! Cut them! (Frasquita, Mercédès, Carmen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b9620cdbc94755d02bd93037353464706d36846398265f27a938516c38a196. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLWD0301212.
Carmen (Sung in English), Act I: Your dear mother and I were leaving church this morning (Micaëla, Don José)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e4e541dc60a0ec7fe0a0403d2b20cfc6157a07e2dc9fdda7c86ff1c5548ee9. 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/GBLWD0301115.
Carmen (Sung in English), Act II: From far away mysterious sounds (Gipsy Song) (Carmen, Frasquita, Mercédès)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a9ed758dcd34723318f1917b5064f417111af90fb3d3424590f9a1f9d06bdf. 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/GBLWD0301125.
Carmen (Sung in English), Act II: Hurrah! Hurrah! The Torero! (Zuniga, Officers, Friends of Escamillo, Mercédès, Frasquita, Carmen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291c3a038292d411340ff6d14b8ac95804ae8a458891502843a736f2d1297ab. 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/GBLWD0301129.
Carmen (Sung in English), Act II: We'll come with you, Señor Torero (Zuniga, Escamillo, Friends of Escamillo, Carmen, Frasquita, M
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adccc9cc14b3d38dabe4a6cca3569ee641b1113c98625a9671d71c9a3f6679f. 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/GBLWD0301131.
Carmen (Sung in English), Act II: Toreador, be ready! (Friends of Escamillo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26413d15b6ceabdb07629d31ce162ea25789f4fa4005d5ed4ecb04a5e7bc651. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLWD0301132.
Carmen (Sung in English), Act II: There's a little job that we're starting! (Dancaïre, Mercédès, Frasquita, Remendado Carmen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2c31228696d8324d3f564535eb4293ef9c6baa2132102c6789862e295798f. 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/GBLWD0301134.
Carmen (Sung in English), Act II: Lieutenant fair, it's true (Carmen, Remendado, Dancaïre, Gipsies, Zuniga, Don José, Frasquita, M
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6dfc8e54d8b50d27119ed4f7a978934eca5c1f2756c0efcd1501cba9983167. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLWD0301207.
Carmen (Sung in English), Act III: As for that man, it should be easy! (Frasquita, Mercédès, Carmen, Gipsies, Remendado, Dancaïre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ed653e75960246d779ed2400fc437ba7d28532c809a16a9dbfe4b50b498909. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBLWD0301215.