Sweet Honey in the Rock are an all-female, African-American a cappella ensemble that started in 1973. They are a three-time Grammy Award–nominated troupe who express their history as black women throu
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 0xe7ab043c72b198085c96a16e794892f5bee5f3b846f51f073af6bd4ad998dbb1. 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/0ad394c0-8e09-4619-9f68-e7c6e43fdb01.json and https://artists.proofprofile.net/proofs/artist/0ad394c0-8e09-4619-9f68-e7c6e43fdb01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x4aa5f87c5e6e3e2e847c8d4dd30a3b751801961c1588fb7510a5d873dec6979e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USFF28537507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502494ad0965eb051f788d114397f6dde2c200cc25ef54014755614c5e7acb25. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USFF28810507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b8d8297753502fa691bf9dc1e010ac4d420b5ef25e059d2049ea9c8b7a2391. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USFF28810511.
Beatitudes - Live At Carnegie Hall, New York, NY / November 7, 1987
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33d3bdb38287159a23c13bd533d527c8284a7150875b3c118b8a7fc65d6abbb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USFF28810601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d0d5fce648100bdc9022120fe4d089d0642463fb3327507224e5b645d632c9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:39Z), 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/TCADO1850989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd37699691ebb3fc7e86bcfabb9fc7a779afc8fd07dbe5988b7a8ed8baecf4a8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADO1851006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b3f97bb13592afd2872cfe732f03fc2fe015123c81ff3b4a4685aed33b2c0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCADO1851019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b21a9738526a2104adee65438a7de6f43082cc46b3f9e7e592d37393598afe8. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USRY20514393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16077c2e9972aa1df50b07c19f5e47100b3f4bb61fed881fc5b36d0b5eb3acc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USRO20010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6593888a25daa74d9c24f96bda00e6accbef0a96ecf886defe61ccf050bf411. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USRO20010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6505b1ea251401e5cdd324318420ab40a32433f4f9844bb263d050f9374a3a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USRO20010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3902de3bbedf8d026ec7ec73c2642bdd7f9683d6ab036decd42d930b8798b3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRO20010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56318720073cc0e742b31cc156352270b82e1602049bd45c16c6e2de684fd12c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:11Z), 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/USRO20010014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f93f328607a87af7797a794bd5eba3886b3cbb9e522f25a65251e2822a0f3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USRO20010017.
A Tribute - Live! Jazz at Lincoln Center
Woody Guthrie: At 100! (Live At The Kennedy Center)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224e71b75c09f36250b80901a3c9f5255a3d81b49e37ba0d10768e0330525986. 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/USQX91301083.
Where Have All The Flowers Gone: The Songs Of Pete Seeger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a46fe3e7ddf4d58afc4b0bd9a77111d0dae9e852e60e2c234b30efa3e8892de. 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/USASR0502408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce61c0da8d2049cb716d21d8c49cef9e0e6f272b29764b75256255f289900cc. 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/USSM19100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d39ee40e2c08ab6a04840c1849d6268f005936fdff5ef8d808194f8d75651f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USSM19100740.