The San Francisco Gay Men's Chorus (SFGMC) is the world's first openly gay chorus, one of the world's largest male chorusesAlthough the Seattle Men's Chorus and the Turtle Creek Chorale are both choru
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 0x076ed36bfe5c37e9421c9a6abb38d83dfb9c6e91e046edcbb3c1c4c92fa8b4a8. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14efc32e-7238-4244-abfe-74b8241632c6.json and https://artists.proofprofile.net/proofs/artist/14efc32e-7238-4244-abfe-74b8241632c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Creating Harmony - 30th Season Highlights & New World Waking!
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 0x2fd27aab1722d6a321b90321db37723fb3bea3d8d3e1a2d695d67bfc8f648d58. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSVU0800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305d2aeb78f155db2798829621833ac1f6c6a496b0cb73ccc701a449269c13a. 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/USSVU1051002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce930bff6935671e920062df09df2c95d1cf9884c2e21fe425d0623e783e9ecb. 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/USSVU1051007.
Make Your Own Kind of Music/ New World Coming
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403257cf9dd8c183647eceb521c729ff9adff7fd27bcf59b79b03b05c6a75a68. 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/USSVU1051012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845790f21323c6c92c0f7d92550b5259f2e7bd5d66032a035aeef7778887463e. 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/USSVU1100004.
Songs of the Phoenix (World Premiere Recording)
Songs of the Phoenix (World Premiere Recording) [Live]
imagined with love - resurrected version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb543b17ea1f423bf77ab3410d9dc050cac440570209a9bfa4b85b2b7e55b6b5. 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/QZBV92300002.