Earth, Wind & Fire (abbreviated as EW&F or EWF) is an American band formed in Chicago, Illinois, in 1969. Their music spans multiple genres, including jazz, R&B, soul, funk, disco, pop, Latin and Afro
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 0xc53e23c1a547cf18b7cfe3327a0731525739fbfb61e25d3bb4f406b6cc959a0a. 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/4a718892-669e-49f2-bdac-ab69980b37be.json and https://artists.proofprofile.net/proofs/artist/4a718892-669e-49f2-bdac-ab69980b37be.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 0xa168bb536e76fa7e6a278c5cae0ac7cb7703def59754076eec3c75676b1cb223. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM17800845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3830055802653a6bf0cabe9c2093c786bd1cf0f026eae6deb922861d2963cf82. 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/USSM12301090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bec0541ddc5d69f527c04d6ad899fc1e907da2298ca7d97ca190bfde3caba7. 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/USSM12301091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aa260af98e885101286cb7b358ca33c740dedf4030566e0d15318d66bb3d55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM18100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e329be33f2932f0ff5bfe67976b329326cfaee7a3cdb258dbd7d97fba1a874. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM17500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619101f7a1c0ef71fe5bc8db084fe6bfb1f45057bda973e7e400866499b3bb98. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM17400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f051ef10bf14720c234fdf54cb03bccd80722f0acc215c997042f2a148e721. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM19922860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b7b1f297a7d393fc21b359329322c9d1c7e1d991e4d7865dd26ef494d17c31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM12005072.
Hollywood (feat. Earth, Wind & Fire + Hazel Monét)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b4af90e06522bfe85f776c7df72466484d4fd8517907349eaede4bdccefd1. 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/USRC12300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b7b1f297a7d393fc21b359329322c9d1c7e1d991e4d7865dd26ef494d17c31. 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/USSM12005072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833174fc250c8c6773ec3f0e0b6cee33e4d1ac6dff22fc8ff59d01aed26a5aa7. 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/USSM18100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbe15bce223b2aee129dd29bfe87ec3e553cdee91fc5ac09858a1bf0e9c9c90. 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/USSM17800253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c1730a2b45b565c3dc29224bfd81c1ab6d1f8a8e22d05ab7758ecb77dd644. 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/USSM17900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c30540fdafc6fb0c66b2dbea8b0d572a984528ca48fed27d8846e4648f6802d. 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/USSM10000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619101f7a1c0ef71fe5bc8db084fe6bfb1f45057bda973e7e400866499b3bb98. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSM17400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f738a6979aa80ba323e526fc870b66b4f19e6de320e47fe5badbc0e6b57951. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSM17801188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9de9807f14e45dad8ffec8af3a904ff4ffbcab00152bafa79a496cdb97cdb78. 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/USSM11005728.