The Marcus King Band is a southern rock/blues band from South Carolina formed in 2013. History The band is led by guitarist Marcus King. Raised in Greenville, South Carolina, King was brought up 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 0x54ca99e7f75fd4caf0bfb4c3ea847b226f6dc83a3c9bff95c8082dd7c62dd520. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/487b8a8e-0fb3-41a8-b860-9d1134499e6f.json and https://artists.proofprofile.net/proofs/artist/487b8a8e-0fb3-41a8-b860-9d1134499e6f.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 0x7bf37a60fdf9ee6d501d0ee714c4431f721b446a88fcd69f7ff1e8919d39ab4b. 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/USC4R1806587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9d97e0102689b9024c90bb41f0595990f9d42559cf0eb32af45dd142f6bf3. 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/USC4R1806595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cfc887e61d33859a7d5d9d2ef36727157184095d5073d39d8d40093e0e0c6a. 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/USC4R1806588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476014acd8c6f4f55020549635714253698df8548cc38abc90487a520651be5d. 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/USC4R1806589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a790454f33e2a835cc944c8781c588d06bcf9e5904c3a89fe7e9b2ad6eb51. 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/USC4R1806590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805eb008c82014219f4df8c140adc7d963b6f5a85203997cd8b92093e5d27d12. 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/USC4R1806593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd724e716affdcc2a0f8970d8f53098bb110ef35f7be45a69a068d343fa6b54c. 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/USC4R1806586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b227766c8ef672f9b582ee15e89184e9eb5a1815f1abbb3c488c934ac2ef6. 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/USC4R1806592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8ffb37c063f43edd32106c9d04dfc18d0fed03e9d7890a8229497ae9c98e95. 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/USC4R1806591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680528ae15b432291c87d8861eb786a61432c7d84ebf7c13166e0ad1ab394032. 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/USC4R1806594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc778df1cbe574f5b1a4cfe9434b560cf337db81bc2e8ee1461f2a5622c589d. 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/USC4R1605113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c63b2751a6d97b171e63c42bb08969f575a03640a2ea23f7e624424fe8df5c. 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/USC4R1605114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8fb45197e9c92a5fdf8e6f0ab0d33269346a01012442bf102720e4eba0b2cc. 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/USC4R1605115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a33f2c9089c311564d40e54fd75c00f7597057bb5c6d6d3f46aff1a2737a95. 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/USC4R1605116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec28614da6c85c3c0f88091006d5a107889ec55f8d593827fc149b0a2d5a7f3. 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/USC4R1605117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3068b911ffe22928f0b159e4a917fc576f31adb701098360cc5e73487c111858. 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/USC4R1605118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326f4a4dfe38a01324b74fc71cbde7b60e77b1c3ba2dd886874eaea5a333371d. 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/USC4R1605119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66ee09b133f2086c735f38e2a7149cb7505590cabd8516d52219ac910971f6. 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/USC4R1605120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913bfc61eb1f9d532fcb890f3bfff1ed08108ee754b4c1b2c7bdd1137df01213. 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/USC4R1605121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de80c1a1e6cd2a8be316ea691b9d01669ddf3aa2b799c0d2442c7034e6ecd39. 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/USC4R1605122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98144c13e4da3eaf22be1080e1c751d79522a262f7697fb82f0cb5ded50fc4. 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/USC4R1605123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13272d51b3d056639300f4450be9d913474c3fd5951a3879956e656bf30e7cd0. 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/USC4R1605124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea8e505ba90b387c1d55a239e0cfb466983b7fad75dbe0eb3ae822b6c475d14. 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/USC4R1605125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee934efba6a7fea4543db25548209fbfac02674d14fdae5895d1ece7bd056af9. 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/US5YX1500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d28304cf36bd78582e093914be2abd068d7239215844950df3e170b28b19d. 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/US5YX1500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f83a48f8d0291a6bf1c36ccbf18c5272987ad0d1318f0a4fe7e01f999777b2. 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/US5YX1500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ede6275d5ea4a4af199c93519f0843ad42fe534d0d88abf314713989a7f3cee. 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/US5YX1500289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd764d836931a2b6e70b0e39566da10de7cebe54a47ee78d282c308e1013a0b. 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/US5YX1500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eabf33a88245c0b1395fd3386c51e3c2031ac9c306f34b728f430524e76c1e. 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/US5YX1500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25ca9ef4991155dd4957dcc95f8651aa150b58a69f95f270da3acd96a3fd4cb. 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/US5YX1500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f842dee961cf6e77f527dac8a38ba33bb8e93765c0a9cfd15aa8e694c8e803e. 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/US5YX1500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71991e65220d32a89be8273675377b04728d3b5118caf6d1630f670a4ab6f13f. 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/US5YX1500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caad98acbeeafab356432c18d80ce95ec7ef706851df73826476e09150c81a9. 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/US5YX1500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2e5d653be083bf248cde9922bf1b22692bd1b767b1217df65ada9669fb08f. 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/US5YX1500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a50ffd69bda527c8d3c8427c1ad606fd17d552505be9d2a6af5d31e9145ff. 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/US5YX1500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da6b4f018b3c85f5b2fcd0d9e5930e00c267618042ebbd1c390e50bc9955681. 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/USC4R1706258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b74e24f432c35e41d190fe05326f24e11604c5a45070b2064045d1897a8c4e. 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/USC4R1706259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbf9398cf5686235429f3e9f31da0d40c4b9515e783d42fbe8ad81c0bc6bff9. 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/USC4R1706260.
Sharry Barry / Sliced Milk / 25 Or 6 To 4 / I'll Stay / Gloomy Sunday - Medley / Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d176a6cd69a1c23abfbd1c4e3c2a4a2a7eed1281aeecd14daffd817de4087f. 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/USC4R1706261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd118645e86e2a121397515edb353c780c45de3f2122cf41e87f734084fc775. 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/USC4R1806780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a50ffd69bda527c8d3c8427c1ad606fd17d552505be9d2a6af5d31e9145ff. 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/US5YX1500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f83a48f8d0291a6bf1c36ccbf18c5272987ad0d1318f0a4fe7e01f999777b2. 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/US5YX1500288.