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 0x0102bfb1c4d6544c6fb4180651486626f6e3bb93df5110b1065ccffb995f93bc. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/176ebdfd-0d08-4f6f-b8a7-aa2399bff9e5.json and https://artists.proofprofile.net/proofs/artist/176ebdfd-0d08-4f6f-b8a7-aa2399bff9e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pavane Pour Une Infante Defunte For Flute And Orchestra
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 0x6103af9029e321e694e169576bb4f6304dfb8659b0c4aff1e88b38d732a62621. 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/CAM230300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa61d8c626832c005110697db5aa04680caca29668747a2d2492ae046016e0e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CAM230300017.
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 0xf8743a232f59430048198f91dedf536cdca49097760309271511041b0d760613. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CAM230300026.
Meditation: The Most Beautiful Classical Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec08fb4038d440b7c267ca8f8a2a1fba876bf8b503249e6e45e622a72780194. 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/CAM230600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9a1a88cbfcf9dc494e2ff6238388aea50b4f7f76191e53e611d7ca4a5989cf. 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/CAM231000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3cd8600961a166c286d4021d9462d3dc273b3144e9a0429c1df700c1a1675. 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/CAM231000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e208b5029e7364f3d510cf8118ff49662e26461d05207a93ef9feef6928a646. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CAM231000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b43cbe948038a0a21b3d93bd4762b2833f654b161b1c141b60f6692c10da742. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CAM231000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e6a64e7e9289c3de3d26545f883e139afb33e58ab82d224e66aa17d628b383. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CAM231000069.
Takemitsu: Toward the Sea / Miyata: Kusabue No Koro (Time of the Grass Flute)
Kusabue no Koro (Time of the Grass Flute): I. River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf4d5bb01d3b9b5c150bb1ca12d8946e933724092a46e56fcad87e2074153cb. 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/SEAEJ9869120.
Kusabue no Koro (Time of the Grass Flute): II. Grass Flute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3441456919ee521bc6d7c1d01aff42ea9bca84ef09d12dc19118bc99577aabd8. 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/SEAEJ9869130.
Kusabue no Koro (Time of the Grass Flute): III. Drifting Cloud
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b1ce9c4373e4202c3f9970c78c4d6e78facfa878a1fbc7bf58e9fc18c75fa. 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/SEAEJ9869140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37427c6d8d3bfad0c504cd2ad91c98b837392a5b4b89130e67d0e5c3a80e8c5f. 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/CAM239200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46366b4ae0574e3fae9cad53b35f6d75453146832c76c3a6391bb028459c97e1. 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/CAM238200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d4a908259953f5dbe8cde62d79565d1b1a357d5f48ae28761cc3d39b6eb792. 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/CAM238200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef0839be4bb813b03ef321ac08a3c1b0b1b3db2f022cafddfd38dd27620bcb8. 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/CAM238200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5583902cdcd05b0e95eb01e3a3e7a98944742d34d63de64921211c157f26d0f8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CAM238200012.
Two Mexican Dances for Solo Marimba, Dance No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12dd225783f0568d07a42f9e98e18cecd6076b190ed7e623741d66274c572d2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGH2178816.