Rebecca Renee Black (born June 21, 1997) is an American singer, songwriter, YouTuber, and DJ. She gained extensive media coverage when the music video for her 2011 debut single "Friday" went viral on
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 0xabf74c6b50d1fb9b4375cb28b98a9b337da8eaa13aa574f7c57034573c26d658. 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/7abf9ad5-eea9-4012-8e7f-762436b66713.json and https://artists.proofprofile.net/proofs/artist/7abf9ad5-eea9-4012-8e7f-762436b66713.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 0x072249b8b36fd1bc0ef1df19d73eed9840faace75b0d0cc9128ee9177a5c42ae. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMWMW1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02800051697c75b42646339e99592a3ac823cb32760e12aae36b2631c7b273b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMWMW1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654c126767a5b3bcc98bf2fcf78ae9864166c6a21d117c63d7cbf7587e39563. 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/QMWMW1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9e0ee18a0a22d4b91c128795f2f51b3019d2a6f4467cd27570ad3d9096f31. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USHM91379097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d143ce861e482ab1869e3b85105f2431a5b90a0ebb6f756121f72f9398ba2be. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:57:34Z), 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/USHM21659492.
The Great Divide (Dave Audé Remix) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5c02c8defae02a53ed2bea8fe77b37c5fde3e597fd9470d26a6225129fe9e8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM21794534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9bd408eba2210de8ec3daa990fbfc74f8b63b9efd61d40a40ec4adc5874ff4. 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/USHM21794517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f01b5da1ed1bb57dbae872c209519f43c11a01fbe835a6c8c13a700ae02db. 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/USHM21794518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2520bad07fa565aa1257136dfecd0074866198a847c65a59e16f5123c69747. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/USCGJ2029449.
Rebecca Black (Live Session, Los Angeles, CA, 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617e40124a3cc32d69e06a6f47e791d4a02b81aaf3f68a271d3dd17affec02b. 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/UKQNV2000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64345da330b1c7a31143cac896c9827e622604bc6a36d568ee5bb28fc8aa2415. 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/GBARL2200562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617e40124a3cc32d69e06a6f47e791d4a02b81aaf3f68a271d3dd17affec02b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKQNV2000179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccce1b8ffcfdba910251f7bc2dae036d99d024d58eea9be070f79ed5ceaacf8b. 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/UKQNV2100085.
comfort noise (Music Inspired by the Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c7b164c16e7a5c56e25fb3ee0a7f6c9696c6d291e0a0b3c9d70e1a11ad2068. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USA2P2227080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf917d27af870395dc3f554ee61eb70c422c751e41387851845f4c19c8fdee174. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA2P2232931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb1fac77661da5ec1771d3232bb958093ee09a5bc3216b1a79e8603357a644. 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/USA2P2160224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c7b164c16e7a5c56e25fb3ee0a7f6c9696c6d291e0a0b3c9d70e1a11ad2068. 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/USA2P2227080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb1fac77661da5ec1771d3232bb958093ee09a5bc3216b1a79e8603357a644. 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/USA2P2160224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d16496407eb4c966856d82951778997f476405087ee6bbb5d96a597b04470. 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/GBDMT1700449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c521c2bed2b8b95662f4e961221ab58f38d14141b8ad53f9955507810c00d2c. 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/QMUY42100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c521c2bed2b8b95662f4e961221ab58f38d14141b8ad53f9955507810c00d2c. 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/QMUY42100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6489ba1a4e2ae2ccf460385e64923c42960a04779f87a43305b54f65d8df2b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ22B2022136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5cde3d8f777d84670c3b511d77c4d42b4f343d505e9fe461c997f64dd9b392. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBDMT1700113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf423f3c34d59bdf2d207f7069b992ee88369ab823742651785349b81f08ba95. 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/QZHZ62285181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf423f3c34d59bdf2d207f7069b992ee88369ab823742651785349b81f08ba95. 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/QZHZ62285181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3153ab9a8836ea5f99bcdec900aa704f776d1cc670521d0dde90461c0719e125. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/USA2P2232927.
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 0xaa8273a8ea6709e0ea82ff574c84b908d97542cb9812e7535d4f33954ed967a9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA2P2232933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b09c96045065fd129562db6f7f7eb48ed7c3167d5a3d701bcd2c7f00b94c79. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/QZTVM2264890.