thumb|400x400px Roomful of Blues is an American jump blues and swing revival big band based in Rhode Island. With a recording career that spans over 50 years, they have toured worldwide and recorded m
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 0x9d7b4877cf6601b53b4591a5760b485bce6cefc4843d4eaa01512f582c041d0d. 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/34f147df-f00c-4def-b6a1-5e0eaa721b19.json and https://artists.proofprofile.net/proofs/artist/34f147df-f00c-4def-b6a1-5e0eaa721b19.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 0x4bc26faed4b519daeb1a4ed0fd82bad30d4b8b0b3a52e889f9cf5197d4e6433e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USBU19556603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039edb4136dce47230434e19540e9765d4d0de6cbd28d7f9916606669a2bad3b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSJ10905065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6598268ad29db8ee0bf38699bdce599f21ff2b257ac0dd3cba4e14a70deebbb6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USARL0388901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389d890130efeba135024185e94320da488a890ceaf30c3ec5057a6392f892d1. 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/USARL0388902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f142449f8d8313805495c941e4cb7ebd775c387a443b8d16de906410514e442. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USARL0388907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf939abf953c3f80e2c9c56c27f64b1f4494aae90425dacf2bacd1f59a65aeedd. 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/USARL0388910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc235cb8f8d33d2e8bfb509ad5b8fb901245313f4b6e895fcef98f4831e27d092. 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/USARL0590005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8bad808d015e6e0e1829128babfe051ef872888608a807095f2b6555348ead. 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/USARL0891903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8b9f228fac61f034323ad8e21c0502752ba11288aa17f1286213471b06f6f2. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USARL0891905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e152d921444043827aa33da242e857c4f6a6e82c532a6216038acaeb6fb6466. 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/USARL0891909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4db0635be4759cd6691cbd7f00314c66f837110790e309969b55e60e0d34e0. 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/USARL1194102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3ba1d03b38c704eec8ccd649b2719822e1e588050a94a552eb581b6d11632a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USARL1194103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3010116ec81ead9e3a32ef97b6a28af3f42833af1c87dbd87a69319805bea3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USARL1194107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e29b20959f6bc8f41cca9a3437601b7b8b215b82bf6389ac3179cad457a8701. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USARL1194111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa320f91877196c20a75dd49f0582e4b475fa0a885fce72847fd57ec59fb6d564. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/USARL1395502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb143aba0839ff792cf0bec7e422333cfe87925365f154a88b4ef3a63fc5464. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USARL1395508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71e5bbba1f8a3e07f68404d3554840b211738b27f906b77e7e07804346a956a. 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/USARL1395514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496c4e9843657711f8e6ccc5fd707a5a7a5daf08fe538fdc15ea3f1ccb549d16. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USARL0891908.
The Best of Roomful of Blues - The Alligator Records Years
The Best Of Roomful of Blues - The Alligator Records Years
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a4b259432b06a0e00653414a9968ea0b69cce84b882e0efacbfc04029a4044. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USARL0590008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247d043bd90a947a340680e74c10d30ee8e77cb90778ce207fb306d6c010c16f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USSJ10200432.
Alligator Records 50 Years Of Genuine Houserockin' Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5338f250d4147b874975b7cc1115f0382b7a7eb8b08492685bb507a0a8ba9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USARL2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f142449f8d8313805495c941e4cb7ebd775c387a443b8d16de906410514e442. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USARL0388907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3ba1d03b38c704eec8ccd649b2719822e1e588050a94a552eb581b6d11632a. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USARL1194103.