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 0x735f154a3d37e63bd585905888efe6223dd7c02abae230ecd74b0f53a8420dc2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/800b258e-799b-4b9e-a1e0-ef9352910f3a.json and https://artists.proofprofile.net/proofs/artist/800b258e-799b-4b9e-a1e0-ef9352910f3a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Acoustic Beach Vibes: Relaxing Guitar Covers of The B. Boys
Swan Lake, Op. 20, Act 2 No. 10, Scène, Moderato
Classical Music for Studying DEA Channel
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 0x2f41e6be81de31c1b2479b0a9efc34394453b4f8904b48c78e6cd350c6597076. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITK262200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad8777f1a35852444c2123b43726f6b354368de573bbf2a5572b90f6df973c. 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/ITK262200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb27146eb3a92276be37eb206ac5e47d8c44a6444e930b69eab4d2b4433cd6b6. 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/ITK262200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c3798793566ecf1fb5cf70c3cecc21528a2ae2da85fed62b11c02af9b9ffe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITK262200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd1c3dd72a180a8c187e921b20044d4a2ce664a9bb23991d230efc0fe090c4. 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/ITK262200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd761ac5e1662c776d10eaa0a8ffc7a1aedf205d58f5c0c08aad8a9e5b9306095. 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/ITK262200119.
L'elisir d'amore, Act 2, Una furtiva lagrima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea98de1350fbfa2a9f6af2bb031c86eb7f37976a378707c83256bcd591a112b7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITK262200122.
Air on the G String (Suite No. 3, BWV 1068)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccadb406fe801b86f1c5afb796ba09f2162197f79dd689656f1a57af380c848. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ITK262200123.
Suite for Lute in E Minor, BWV 996 V. Bourrée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4c471535af6e1dfeb5124cef9df2c0690a12e6d6599995ca6c6db20174539. 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/ITK262200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1862da470df779c4af2cfd65cc60f3a0406be833150f20b15ed98d1527ceb8bc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:48Z), 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/ITK262200109.
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 0xbb379618010988c94d5b855183bbd55ad2cfd34dc58c1347277a22d153911f5f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITK262200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c1cfbfbfd57c8d15081d197e8b4fdf2dd7b92ac61c50b3501183e8842f9bc1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ITK262200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4192a4a2bf2a0d0753cde13e2912e9c61cf9ec030992d1295009455a4e217683. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITK262200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ac3abf112926a57edc956cc2c9d53a9c3d228be3bd3b956b2b9bc931933cc. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ITK262200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbe263672764a759c9f732c2f410953f49c022ea4100e7a692a2a42d749e3cd. 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/ITK262200116.
Turandot, SC 91, Aria Nessun dorma, Act III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0fbc74d4fb1c2a6ce349be28626d3017f007d0d901830e04daf07e3c0274c. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ITK262200118.
Piano Sonata No. 8 In C Minor, Op. 13, Pathétique, Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6d566eed6cd4b2d89ae5aaf573392530dfefc1385e96ac33c2046dac122459. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ITK262200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a5cd79d4eb44460a5dffe59cc8617daab49bdd621f02cd661cb5da68555df2. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ITK262200121.
Concert Royal No.4 in E minor, 5. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f198b4a60575380b0a1232b213079a72cc5d12a506042e6d6728dae07b78545. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITK262200124.
Suite bergamasque, L.75 - 3. Clair de lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa75f23fb0616d08d0409aacca8efce0efe72a975d9166af2d5a7784c7a4295. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITK262200125.