Room Eleven was a Dutch band, active from 2004 to 2009. Several members continued as Schradinova. History Room Eleven saw its origins in 2001, when lead singer Janne Schra (born Janneke Maria Ali Sch
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 0x47e7a57dc0aa481994a22d76eed3324ee6652151bf05f6ab7466c15454293ebf. 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/5758f046-bfb7-414f-94c2-94f59404b180.json and https://artists.proofprofile.net/proofs/artist/5758f046-bfb7-414f-94c2-94f59404b180.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 0x3b2c8c1bc6b74b27f956d5680d5c39fdaeeeb12ba089d148800aa597784c6b4c. 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/NLUM70600623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf972cd265a47f461a03d443f077f5c38c656ffc7cf414fd426d0013108de6b1e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLUM70600622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5553c44f225d121fe95755cc83bb924a982cf4c9e3a5121ce74954271e79bf1d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLUM70600628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fceb4261561c1eb4254bdaba330c15aaac6994a50feded63c58334e25ed8815. 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/NLUM70600629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284e6d0eeecd9538c9cae984cae3f2a199a41d7059fd666cb4155dd20494f9e. 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/NLUM70600631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4687bdc8a5315b680845c678246604e8d5a6fe2a0e0f6aa078424fac77a6bc. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/NLUM70600632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd438033e3af81be1439ce670c3b88981191c5516fe186215d146975e85c13cf6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLUM70600633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546c594094716ec538329e59a387ee7c88b2e92703dc7acdb3e58eb674f974e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NLUM70600636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd4310bed6239f93ecde9dca56d9544175df19bd3a9c4abccf32ad46382e21. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/NLUM70600637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a08b5a0123d2bde6c263f8f119e2af2952265bca2be4c807dfaad82eeb8e95. 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/NLUM70601405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b72f69422a249a80b820f1be1ac2527f5d42979e5e4cf872044d509980115. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/NLUM70800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86924a352a6cf47e8dfeeb8499bea67af4a19101c3215b875f4d1bb87e2bebdf. 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/NLUM70800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588f6dccec6e97d5529dbda9ac5a1a2109ce6bb44ef842bc9942e5323b06ba2a. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/NLUM70800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea880051a624b18924bfb80c4a7e1de79adbfa69d2f8942db2eb65abd1192012. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/NLUM70800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13d33a4f69d6bd8afc775115ccd1900fef98e38e31d8f7634fc4458d337a9e6. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/NLUM70800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376e2cf32de17d9a972bda1bcac036bb37d589d8bb09704ee7eda6edfcd655a3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLUM70800033.