Grace Slick (born Grace Barnett Wing; October 30, 1939) is an American painter and musician whose musical career spanned four decades. She was a prominent figure in San Francisco's psychedelic music s
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 0x0a495a296ca690bce24d06ddba3c4bf1627ab9e83cca5a8b606656df250d544c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0d68419-6ef3-4195-905c-064297235239.json and https://artists.proofprofile.net/proofs/artist/f0d68419-6ef3-4195-905c-064297235239.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 0x97f9d01d9c6b185e906d7a312542a8717b8ceab691e99e6b9d9d100ad9a36163. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USRC17308460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24ed34997a17f55e59eb0917b2c63e41fad10f39e6c236a3f02d285491d21c9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USRC17308461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d18077a34452caadefb37b91ab82350a0e5efb12ea92371b2df959e3d27ac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USRC17308464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32aed9b488e8fd4c8714fb4cd12ad92ad03f0071ff6b9405edeafded3e5e2af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USRC17308077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8edaf5cf8a7e925dd9adfa69b731259cb2f0fc64c99c87e14411ae10346745. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USRC10300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f3b26f9afbd2a666d73fe2f2588309dfcd5e052ee7a1d261b0120e0961a6c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USRC10300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e211876adb6b2c7e310756d62e53106aafc6cdeeb208be1bed7e2cb810a9010. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USRC10300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56ad0167033e6b71cb77714513870588356d28a425eb5c833563a892e8a22c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USRC10300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b767a8ef00d88032e6b09bd42427bd1b91cda94bb3e1756f9fd9a46b687ea31. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USRC10300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe66fed13651cfa8d17645dbd4a4a3be6cf03e3ff4a9e5c095a8d16603da74c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:10:27Z), 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/USRC10300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b55ab1d6eaf414574e15ab948dd46121968e93102b725743fd65c88e5cb801b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSM17101026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16aaa1366507d63e574961b625140b3ccf7788988651776ce09a5a8ba93fa10. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSM17101027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3973ceb3bee49c92fd93b6cb4523de1756ea3581d7ec09e82b43e81a7425d8f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:32Z), 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/USSM17101028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003951dd424bd6e8c685da2f67b24c7256d9728896e664968fdf3f1189b35534. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USSM17101029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa88ad2f6b0730eea5d17d7f98f94a36230baa2e7b463419cf0c283fdca243e9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USSM17101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ba3e708fc2a9847489f274ce2622fc52a4dd787b6febd4212e3811863fbce. 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/USSM17101031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890389bbbc3a9164447acbadd04498cd31b114ade8fdfd544d1654809e0873aa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:29Z), 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/USSM17101034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda8f8fe1ea1b020de913214f9d5d1326c7e6df3e8cad4acffd807d12d3fcdd8. 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/USSM17101037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0b4260a97720bc2f600d343cc51f239c976363ecf1765dc1f30ae392506c9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USRC16601824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60daeee67869f4c6cbb2da35d703e216153aa8df44c0cd41e18913e4a8d63815. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USRC16601832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd20c8b07c13be5ddd2c07911f3f9aa6f5b7fe21a218444f01f1aaa0c850d70. 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/USSM10004684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938ed8ba999bd199eda69dcfffdc55f328dbc97490fa296bd169c8118a8037ee. 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/USRC17308462.