Billie Bird Sellen (February 28, 1908 – November 27, 2002), better known professionally as Billie Bird, was an American character actress and comedian. She played Margie in Dear John (1988–1992). Ear
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 0xcbf1f851d5a6fd863b7bb03148c78be4d543384496d7eb5c3a4c6942fdb8fcbb. 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/e7acc8cf-f1bb-475e-a92d-6052752a72a6.json and https://artists.proofprofile.net/proofs/artist/e7acc8cf-f1bb-475e-a92d-6052752a72a6.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 0x17f3a2d9e360e32ccb5bb5d79310088beafa6d7c5dd88c5211cd026e35d9433e. 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/CH4132200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404a9f89200bf7fadd392efbb1dbb15a838728679745281f66612445d708894f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/CH4132200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f542d49a1542bb6499013b0f2853e5fe72f71b9350e3f9e6a9f9d809b8f9ce. 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/CH4132200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb443770182824c3484c3e20663db12325995a09eee64e3d2581059c0fd667d2f. 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/CH4132200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76d0d22975170a1b4d18bbd7c12c469aebb18f29784cffe1b23f01a065d183. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH4132200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf081569564626f92369367f1040bdb07b56b96762898b983bfc02a761ff9a1fa. 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/CH4132200212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f121eb96d564fd22304ced0a3f9b58e6e4e9847badd784b672ac274ce99dd1. 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/CH4132200213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce443f60f5ce819d5e83198c0657ca794f10bf53c23cf79539fcfd02246ddf23. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH4132200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464cccb45aafabad23ee0752664d8f4995963217a3bb10796044e04ea6bb48c. 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/CH4132200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b08020db1994d077715d0aa60f409f60b6498bd92481d27fa3feac93ec182. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH4132200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2e853850527d03ca7e4a9317db2d3ec46bc1cdf3729fb3170ba02925111c4a. 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/CH4132400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271d624a7391f75db934ea1447d90e49381b14b00d3a2efa663b5f2f0784d9c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CHAAA1807926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76d0d22975170a1b4d18bbd7c12c469aebb18f29784cffe1b23f01a065d183. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH4132200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb443770182824c3484c3e20663db12325995a09eee64e3d2581059c0fd667d2f. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/CH4132200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce443f60f5ce819d5e83198c0657ca794f10bf53c23cf79539fcfd02246ddf23. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH4132200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb443770182824c3484c3e20663db12325995a09eee64e3d2581059c0fd667d2f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH4132200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b08020db1994d077715d0aa60f409f60b6498bd92481d27fa3feac93ec182. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH4132200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b08020db1994d077715d0aa60f409f60b6498bd92481d27fa3feac93ec182. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH4132200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce443f60f5ce819d5e83198c0657ca794f10bf53c23cf79539fcfd02246ddf23. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH4132200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88161b94370eefd95f464b55a0b4dd05803be05fb7f499f39b4bc2f1f79877c. 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/CHAAA1907932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72579d1a6e606674cc63b89b6cdec8bb93c06fd943454e19aa5c755fe452fb6a. 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/CHAAA1807930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c592529b3f600bda1f4935e296ce7c86b608c4210d5cac5f0cf9cec5562810. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHAAA1807931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16477035b7154780045a77cbbbd07e7cc214d89ceb383ec4461fcdfeca7a11ed. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CHAAA1807927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d8ae2bc1512d84a82859a34ab7cc87a79be30afc89ad1f54dbcc1003dbf72a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CHAAA1807928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ea9b9d7db43b70c4e61399c9bd48d9bce56203405cb73bb341a111d1b11bf. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CHAAA1807929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271d624a7391f75db934ea1447d90e49381b14b00d3a2efa663b5f2f0784d9c. 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/CHAAA1807926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd18989f22b3db43cfbfbab148a8c9537b80390fd0ecaeeb1d1e7d5fa6e3c6. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR6V82195831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb17b81deab0ec68ca1e01e46eb5d65c6abe93d40655fd299cf9de997493fa. 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/FR6V82195832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c69da65b8665e85e7b97b642db653b5982f50c6ac87f0ad287fdd99f733de4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FR6V82195833.