Sepalcure is a musical collaboration between Travis Stewart (better known as Machinedrum) and Praveen Sharma (better known as Braille). Their self-titled debut album, Sepalcure, was released in 2011 o
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 0xdf23bd4738e64aee637024a8034f9c8da2aa0477cf917419ee72171cd5475dd7. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e3d03e5-2184-4b79-81df-59d8c586929e.json and https://artists.proofprofile.net/proofs/artist/2e3d03e5-2184-4b79-81df-59d8c586929e.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 0x03648a2f7e7ceeebe349e3a3dcff06ba1786399707f45ee6a3465b68ac1876a9. 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/GBHQT1500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd15e152e9263cb2d825e98c27300d9c2e6126cd1b4621ac94c6ccad249e1f7c. 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/GBHQT1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5742a9e86102f30095b990be5c53e9c248a5a22efda56bf904ea16b6304a2d48. 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/GBHQT1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe809fb9a6dbf602f6df3feb2b0e07013e4af385e770c86a498ed67207220b7f4. 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/GBHQT1600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e7b0458e2a1e5c4674ad47f2e5bc872e398fae400e0fd8226bc09826bb740d. 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/GBHQT1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5468c14e9b6bbae01ec61c2cac59ebae88f34e281bb9d620b2985846ad5bca09. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHQT1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248e2f1a98281a6b1f60b608ae5f2055c8ce9dec024046b2e298c2944aafcce7. 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/GBHQT1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a04246d558f5099875f172b13796ef80fad74f8a79526ef34b343896ef1287. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBHQT1100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49ff6ac30508b639b547b46792532f860b9a2f274be3ec7c88da5e934d34043. 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/GBHQT1100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd398937be48296aad0b8133e882e45955d5b8a36693777953e4276c455d54eda. 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/GBHQT1100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e43c7904d63faa3212f4e91bd2edf5fa9bf426203f7af25d4f8aa5dbb5e52. 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/GBHQT1100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cedcd8468b288da715988d57d482067a3852a4be620a1ce9af974ee2b31526c. 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/GBHQT1100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38afc5e47d2f56bdaed72f56ab699fb0e68a82944936a271b8b3aa6a74e39a77. 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/GBHQT1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03648a2f7e7ceeebe349e3a3dcff06ba1786399707f45ee6a3465b68ac1876a9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHQT1500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef3f0f74a5d8b8e9336d4424dfd70c5d5e3c995ac7f31a2265bd5e46a709e42. 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/GBHQT1200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d56fd0c8c9432c3aa87a67d0b791d4671dfdd4abc54fb3fd8cb54cbb31146d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHQT1200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fea1f0eb973a83e7b58e6d3de0deb55278786d7003f7ddec05b54e0662c022. 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/GBHQT1100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51fbd39463e801b869acceed10c2e14e2d80b63c10ce366c27bd13b12049b8d. 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/GBHQT1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca460957720ca9629a9990eadfae4533b700f4eda61a258ca0cc1237ed33c8f. 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/GBHQT1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca311b5be03b95786499e588e9fa817ec27265fc19396efce96976ad5afaeaec. 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/GBHQT1000029.