The Bay City Rollers are a Scottish pop rock band known for their worldwide teen idol popularity in the 1970s. One of many 1970s acts heralded as the "biggest group since the Beatles", they were calle
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 0xcb0494892a86422173a1b51e68c0cdf8cb512f80e9716287cd70a46aec907c61. 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/2d9f2966-1d71-4a50-8f70-5fd9f84843aa.json and https://artists.proofprofile.net/proofs/artist/2d9f2966-1d71-4a50-8f70-5fd9f84843aa.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 0xabdc0912b53b663f79ed3e879276356c30094cca2935cb35b96b03d59682fb02. 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/USAR17500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099309af5d7457c4727a7af299e69b16e4277c1273ca4e1ed5ac5e0cb81e0e7f. 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/USAR10000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc8ad45cba389f5ff72bc5ecf09b71b7ba856e81cb2c09546b2bb0a8d4f9c36. 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/USAR17100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628bdc5e5cb9b6931529e1d02f131f7600eb1e62ed969021dbc25cde5340e11b. 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/USAR17500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8980b04954110cd80597f9d6932a68ab35361834fd9ae5551364c7e495d236. 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/USAR19500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfbc093da45f49bdac05c41448112d0a8a8a0cab7d6c8bd63cb0baba9213b9f. 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/USAR17400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d56680a1c190a194759b862ba0988fff4b5365456f345b20e99d28b3d2eb29. 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/USAR10000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65972d238506479049ca49273337d181b64685c0f01512b7435b5c874b6d41c0. 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/USAR10000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa271214f7cca0ede2ed5bf78c79f1af57046d203c91f0fd331229a7a95ca3bf0. 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/USAR17500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df2e4b91692394749ad4819600be72dc6bad83dc46cc7e62937e9f3fba0bcef. 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/USAR10400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0988975c54cf2c41010de94a466c169d903e7d968bb5b1afff2dcfe3e38fb9d. 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/USAR17600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966d4eb5d3b0d9f0b4ab9409c50d557446e6132e1f39d7d713702114a1c41a8. 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/USAR17500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93820163cb2af53d34637660b6e6febd0d1c6874a259d903c32dca62b527d419. 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/USAR10000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f70552f5c901a3281226ea40c98e71d56431af5472cf54890b7032fe51b980. 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/USAR17500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73021c83d019dc591b1a684f694aa2b3c85f7b9e37c693c9c4f4143557292236. 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/USAR17600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38121e6c4293f191973608508af389479cd423f40972f7c4634d805a11b6a4dc. 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/USAR10000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f65f372c6b01639e6f07fc5a10d93880751349745a10421b4ba23a4de1f5fc. 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/USAR17600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf917a8e4cd59a70758c10152b03c04eb6e6d0c6d5e9b640002f0ead10eff08bb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USAR10300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196f846e3a07f4231a1da1fe56a4d0237623a1b529400f029519bc60a3a5ff8c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USAR17600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96dec52f0cf2f8c5e7027f492d8e2494268516797029075dea2a42fc160c884. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USAR17600243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908f85867f6a50aa9c777059a930d78ba3dac55a7cdebc313cf64a46583ead1. 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/USAR17400159.
Bay City Rollers: The Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc0912b53b663f79ed3e879276356c30094cca2935cb35b96b03d59682fb02. 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/USAR17500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dff1dfd6f6b7e1c4519acc99b11f547fb8ac71d2121b6c80bf73b9f9579546. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USAR10400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44abab8af21d4a0dd2c61acf62d9eb23216ffbbee91e36773f4a2ba94844fdcd. 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/USAR10200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cfd46264819f5cf82239f8fad60c85eed14c1ffb9c282349c931442d8b4da9. 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/USAR10300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc8ad45cba389f5ff72bc5ecf09b71b7ba856e81cb2c09546b2bb0a8d4f9c36. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAR17100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5396a6862b923bb267ffd1637c43cd7aa81fff73084a5d2a06aed180b569bc. 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/USAR19500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c451460f085a298e072174ffd108f55712cfb7fcb0e0bee3334abcdc48dc3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USAR10400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ee2fbd1fdeaa31fe2c5726b9dbae5d0f93b101f6177250f42cc7c7a3787385. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USAR10400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bae9948aa90a7efd647347c0fd5e58fbd3b5f35c5bb25465f3c7b51b1c75533. 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/USAR10400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d81300f7de09c4f9d22e92ac064a885fcb9d820b08bb1b090d04b44cd6fa22. 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/USAR10400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31096dcdcbd49b1333fbcf92ebf77fa61c543062779f7f1ce95d13cdd9abfd32. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USAR10400192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93820163cb2af53d34637660b6e6febd0d1c6874a259d903c32dca62b527d419. 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/USAR10000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b96b35cc35c26df25c4679adec9d96cbb968c345e74a1774f6fa28e07f0f80. 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/USAR17400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31af6ff0057af4086b1686841a303a12e0696bfded3ee0c589a3ab7eda28e446. 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/USAR17100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d68e987ea6ca768df7e71780e2078f38c9a8e585827d5fa975a6a4142dafb26. 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/USAR17100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa271214f7cca0ede2ed5bf78c79f1af57046d203c91f0fd331229a7a95ca3bf0. 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/USAR17500148.