Rahsaan Roland Kirk (born Ronald Theodore Kirk; August 7, 1935Kernfeld, Barry. "Kirk, Roland." The New Grove Dictionary of Jazz, 2nd ed. Ed. Barry Kernfeld. Grove Music Online. Oxford Music Online. Re
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 0x5e45957f85240a6fb60157fabea20d4b69091773670b7153faecfd042b28d468. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/972b0fd4-1b77-4919-8fc1-e6c621d60f34.json and https://artists.proofprofile.net/proofs/artist/972b0fd4-1b77-4919-8fc1-e6c621d60f34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rip Rig And Panic / Now Please Don't You Cry Beautiful Edith
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 0xc8aa3e22105ccb1e8039f64ff317c775849dafabfe2c961c6829cafdc66c50dd. 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/USGR10200433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2700dc9d42897307e42ba27e291676e95db88832e475b292686552f2c5581bbf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USGR10110158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee386b0dfe9332f0241abffe503e24af309470190c4ecde8d87d6910d28b6c7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USPR36500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e27f70a604927837b72b7af39ac70399ad7f3d5340518a316845b9a72002634. 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/USGR10200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3829a3c6989ecc56d80e9ea5a701d6d1f5236b989e2d8bb19bc7928e823e5514. 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/USGR10200435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fbe949809f8453b88ad1f76fd65ac78e62f6088a4805bbf92244305e96aaa5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USPR36500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3bb45c7bdd521a5a69be66c5a9e36fac01e40fbb29d5b5e7297376ff8e1400. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USGR10110644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4930b4a4cfe8d60b2523842ee7c12b0d3254bf4f0dab21827e15f5e90d5213b9. 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/USGR10200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590b3b79589ed5fda3cd43213852fd9622ab8086876d651b1a984c8dcd34b26f. 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/USPR36700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5d8988dd072446f753c90b708806831777250b85586d3d31dfe00415fb3223. 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/USGR10200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e7def605190247abdf8299be1f78c5eba522c5201ca0fff132cca5552134d2. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USPR36700006.
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 0xad80cd6612593f9ff013c1d728bfcab53ccea098a95523b439e360dd188b3308. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USGR10200438.
Now Please Don't You Cry, Beautiful Edith
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6a4261004e9af39f6ec9fa5ca73ab149237d5920cfc2bbd46ff8f2c4ead9bc. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USGR10110160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a81536109a7d6e718d72c2b763a2f6c231fe620966d6acc167779c5c62329e. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USGR10200439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa397de7e0faf245da3eacabbc67b545b1c84ef5ac4e85653764afd9bdb963c23. 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/USHLU0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6e64c9301df6b4bdc381ec89e6b4c3bf6bdffb60d03fea34b24641c29b4f8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAT20503769.