The Xcerts (stylised as The XCERTS) are a Scottish alternative rock band, originally formed in Aberdeen, Scotland in 2001. They have released five studio albums, with their latest being Afterthoughts
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 0xba3caaeda9cd7c310f78c9b8953483f5abbb594818d239f00faefdda773c69f4. 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/b7ccfd34-faf6-4f35-a597-954b9916fd7d.json and https://artists.proofprofile.net/proofs/artist/b7ccfd34-faf6-4f35-a597-954b9916fd7d.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 0xd0d3858ee10c5d865c12abc8c1157a2cf2e713a554ff442c8b9d8c8c48ed4a9d. 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/GBHAH1000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be4ca2e4ce637ba8e449b38895cdbd6aedeb2a7d39524b1d08372d3e7cfa4b1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBQT91400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ed62afa4bd71bebbbf0bf64c0ce516fce75744fe2df435c9eef25c094cd1db. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBQT91400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe571a16a156f2dafb80e28d90a88008e2d14b5cec2ec84871d473e11a13735f2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:55Z), 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/GBQT91400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6f5b3fc84eec1088168806aa4c6b017c69e84d91e73f9bc90c764eca382263. 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/GBQT91400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1f5fb7cf13ce3cbfd75c6b79cae67dead84a2ad81abb490ef4188d5a4e0331. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBQT91400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865493ee646b4656f084f0d8110d329952d9d976b87977cc16c9f772935e5b77. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:55Z), 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/GBQT91400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf26fb5aa7785d6ad8389fafc813ec03ba5595087d647870c825af42d430aa6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBQT91400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277550957952a4846f22c24ac46744bc09883749bb174ee6c08a067d6eb88a9e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBQT91400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6894617840d6b99cf91d129cf24bb5304637dd1c954feb15dcd94fd61c18603e. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GB7QY1700138.
Feels Like Falling in Love (Alternate Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49c768c659501f4da5ca87afeb34a4095e31462ea02effde9e433650754079e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GB7QY1700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923a3e3ec2ad752f0d86f4430b46eead90a87fda5dafc8549f17036b7535a89b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB7QY1700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa702cc6a7de1d5227f3cd795e4b4f97b3bce78ed5e1b8929365e34f4cf32e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:03Z), 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/GB7QY1700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd618690f03fcfbf5fa3b5bfa3ee270799ce8ab86dd47eb6771b7f868bbf7cb1f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GB7QY1700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6767fe38eb28d6892c3507dfe48b07fbc0f6c769ca780019edb5fb589f69c. 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/GB7QY1700143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9532ad79e046f80dcf974bee7d6d6dc1c6150b5a78dc9a96f632663eb5508d8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GB7QY1700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318927d0f75048b256c0b5e33e52b7bb1e240a8c52933c3b471cc06a0ec6cbb3. 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/GB7QY1700145.
Hold on to Your Heart (Alternate Version)
In the Cold Wind We Smile (10th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742ddd0374bbf8f8c67e392274ed3dced21d179e74251ad454a31ff3992b453. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:01:57Z), 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/GBHAH0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb755838528624f1287ff0bb33b24853089cace4a785f6c246342cb9aa6dfa43f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:36Z), 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/GBHAH0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88598fab3bd9062459d234d4543b2a47f658047ade13cd5a425a2827f968c8f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBHAH0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d8838294e6ed945b54dfd55e772bfa46ad9cb51186943250780c8e4570d1c. 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/GBHAH0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564671f888ae647385ed356fcb1b21f38cb523f99811892d574a50267ff82bcb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBHAH0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c71a2e09a671c7b8c1125d0a8da3a89f1c40307ed938bbd2abe5ed29387f69. 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/QMFME2043194.
So No One Told You Life Was Gonna Be This Way
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787daf38b3f4c191946e9672fdb5ee6350f80caab681d90ffc8e5370310435e8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUI442300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82312d43a94ed6fca2bf71c2ad377977eaddf2c251d05f2ac5e575269aa0983. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUI442300007.