thumb|upright|Elizabeth Futral performing at the 2010 Phoenicia International Festival of the Voice Susan Elizabeth Futral (born September 27, 1963 in Johnston County, North Carolina)North Carolina Bi
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 0x143e7a6178cd13157b935c922d09f23f043636cc64d2f17e3e5a04989ee41452. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e09021c-2354-4f18-a378-8bfc0457018e.json and https://artists.proofprofile.net/proofs/artist/4e09021c-2354-4f18-a378-8bfc0457018e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paulus, S.: To Be Certain of the Dawn [Oratorio]
To Be Certain of the Dawn: Pt. II: Remembrance: This We Ask of You (chorus)
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 0xffc0d95454770b75dea2602743e083f323860eaade6dcdfde8fb8d977109edea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEAER0826110.
L'Enfant et les sortilèges, M.71: Introduction. "J'ai pas envie de faire ma page"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87153410de89b6c1580eab92722ef1cb599b81735efed63ddc83185dd8b7908d. 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/DEF059731901.
Ma mère l'oye, M. 62: 7. Apothéose. Le Jardin féerique. Lent et grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf130ba55d1899912a46f4cfc441a4dae0a5ed7e4b8d9a7a3ce780446378b672c. 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/DEF059704707.
L'Enfant et les sortilèges, M.71 / Première partie: Arrière! Je réchauffe les bons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a008a8e857752aacf9f23251443280c625768c0742f3f444dd7032a1339e340. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEF059731909.
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
Vesperae solennes de confessore, K. 339: Laudate Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590ee3ef01ac2f79a260eab8919df2172159025503accf0577147f851dd4033. 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/DEE478700017.
Ein deutsches Requiem, Op. 45: Ihr habt nun Traurigkeit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d09fd587e3434f553e3fa17331739e41cd752ce1f0c24d1d013e265976d0349. 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/USBC18300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936861877afdcc6d09fbf9686bc4bf787266570c6bcaccb36cc3582f3d6900d2. 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/GBARU9300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d64867049318ed0f8f9fce1f7da6490bb3dc2c0cc7dd7c28bc8b5a89c0068f. 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/DEC767900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72606930054fba0468182d23315fd3fd89c28dd47b8c38b2120a3f38ce78943. 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/DEE478900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24909ea2ef9a209c34d42e0de4613d46c7da773af7d23b6466d056e9eab44c2f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USBC19000383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fae7dc9990d8e30cd0b5f5961a937ee0df1eb3858cc813c6ea9c3c0e5d6749. 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/USBC19100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e751dc609519b35caa9dd70a40944a16da89e939195a51aa16f7bf714db70d. 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/USBC19100725.
The Essential RTÉ National Symphony Orchestra
A Streetcar named desire / Act 3: I can smell the sea air (Blanche)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa3953eb733120c1071b6021fb273860de00535deef796bccef2ec2689919d. 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/DEF059830345.
Hugo Weisgall: Six Characters in Search of an Author