The Ravens were an American R&B vocal group, formed in 1946 by Jimmy Ricks and Warren Suttles. They were one of the most successful and most influential vocal quartets of the period, and had several h
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 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 0xd0b04448d7540231bc03de6f442bda1d33088e1988ad2f9338a6082db6e7b73d. 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/8691696b-c6ed-4ab9-8a2b-b9ae88ba9cba.json and https://artists.proofprofile.net/proofs/artist/8691696b-c6ed-4ab9-8a2b-b9ae88ba9cba.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 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 0x8e883c798d71a08265569306d48e3a188e7ed913b09a3389e3f26357e947c518. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPVI02201749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e896b4c094b16ec6c56fb238d524022d73f31f5d282cc073d45040dcf081522. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPVI02201752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e503137f0a31526ceec19ab5f69f148c6a92dd33a79cfc994debaedff0cd7b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPVI02201753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f1630affb2c8b4b8f0889a2f2e02cd45d1977107094abe2256149b0c4ffb2. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/JPVI02201754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736fc743d9b51e5d3f8a4dba9173ccc024a50b8e3c0f51dee13298a4924ef5b. 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/JPVI02201756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe7d99572b1a0d2cfeebeac6ea27afaa7157ba22f899d7bcc0ed1e88aeabf4. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPVI02201760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331406872307cdcf7a8a01f6c4e0b3133779e141819277a7b687795f785f7e7e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPVI02302718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7384dc11de5061023264669a7c5562c95ff8bfdd9085ac750f4c97305f82f358. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPVI02303335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb6ac4f141d8ca65daf5ffea06791a3dad21540f4d5bb7262c2101da098b201. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02303339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aac895980151b54159ab4fcdaab9a4a44648b55a69500b9a399efcd116a7cb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPVI02303340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e37223b85b28779b43a3e2bdd03e27d58e2f2c9c3fc19d5b9d3b89cf57d8090. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPVI02303341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3a6692d8ddc93a2b83b18fb55ec785f26bbaaf73bc067ccb177018438fe6ff. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPVI02303342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dd824cc931825f25d0ad4610cc4405d4f0bc60d89cb2e7f76fdc309eb08b48. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:06Z), 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/JPVI02303343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331406872307cdcf7a8a01f6c4e0b3133779e141819277a7b687795f785f7e7e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/JPVI02302718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a98aa83ba3be32a8a329304e2ce18ca19213180970360aa28c320f42ebbea. 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/JPVI02500454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1005b4e8d96b196d91f86f12a4b4d1a5863893dfa4fd191f0d63d1e4d260d90d. 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/JPVI02500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5a50c40c50dd27a3afc7bd69b0149845d59604c5ade8992b291a8dc5c57a5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPVI02500544.