Michael Earl Henderson (July 7, 1951 – July 19, 2022) was an American bass guitarist and vocalist. He was known for his work with Miles Davis in the early 1970s on early fusion albums such as Jack Joh
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 0x1574c235ce5943d6a630d869e767a7021ec396174a902e9cb8a9ea36148dc335. 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/b67ba884-b823-4ebd-9735-67ed4315790e.json and https://artists.proofprofile.net/proofs/artist/b67ba884-b823-4ebd-9735-67ed4315790e.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 0x4c5e3e8ee0a48908a04f8c3eb5a3fe9b94a57bb6f787b9dec2e46087115eeb2f. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USSM11308103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d0e8c0660669a0b4b0db8248ecf13f5da7af6bcb55ae2b3b9247332e402bc1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USBR11300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068a02abb826cb1601bf695599590f10ed5d301839556611a52090ca66f7a76. 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/USBR11300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb10ef8a6bcc447b41acb32f7d1c3cf9a872c4ad48cefa7348e2a5cd357cfa4b. 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/USSM11308104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626268d9f59052b011e37e573a72ce83883aa6ffd9f4079079d7fd707f95ae4e. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/USBR11300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6573d6317965ff2e0c48eaf0dcdb3fb2c11e4cb558e9e7aad2d7cffc22e92689. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSM11308088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af20a6f02174c3ed3e4f7eca6d4eb098a996562ab6e2a18e7eba29da41f573. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USSM11308090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc992d0901e36e1e3c99c4c246d443fe544736dc56ce7a442bfc0016f223873b6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:39Z), 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/USBR10000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b1e1871caa82c26f906754ff12ed8666d489d70c25833238b162f354dfd9d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USBR11700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd6e056d5e0d56882c1a5b0b2ba693e2e9f26e98889755c68b9b8595268f91. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USSM11308098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dbb9dd293cd48682983b25ca74423e0fe485fd6e4cd56d88ace73fafd8848f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USBR10000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a9ee8bbefe1e7cfdf307d9bef4d853bc3b178a15c481dff07daeac68427f60. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USBR11300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e49442154fe100e3360e4352b8b7f75b4e90c9020c6843af739181b0f131198. 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/USDHM1712855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1f33fa1005ccffdc5efc60d7c494374ef4ae1c398d54f8c90e475f6757342c. 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/USDHM1712856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a8babb552aa71a4aea40fb49cff2017f40a9510d7c8042462223704f9048ef. 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/USDHM1712857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc4333762cb988adab3b5de83c62c9b5fa110e723130b2ca385f854aa1e1d84. 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/USDHM1712858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce77cca495c0bc2ed0b179f27d024c34968cfaaf0e95e816a545ba23d6e37d7. 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/USDHM1712860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a09da5924cb21199f99593a9579c7e9de31902beda062cc52b0ec6bbac81b49. 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/USDHM1712861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825c2aff874724ae1e73a935e0b6e143bb6b27875d802ca74c484cd6b2be115e. 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/USDHM1712862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc3178b5b12aadeb92b556813ad8862bc1ac7c2e63b244c6cbf54b1e49329b3. 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/USDHM1712863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1883db598187fd92c3417a32e6e4a950b495ecf10a574daf0011d51041a16f. 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/USDHM1712866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a57d6334b59e6814a6936e674ac6c8f4b9d9714ca7b2f0627b7de5cb44616d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USDHM1712868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db63d12cf206e4f5f80bf27e54690256a94d9cd80caf051733bce05c62b7241. 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/USDHM1712869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce58ecdd54e11a1ac718d4a3008cbeb85f0c8b0c255f08690b0f062c58117f0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDHM1712859.
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 0xdb99df30d05f8514dd82151847af957fad71ebf054c394021cb8f675c36098e5. 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/USDHM1712864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bca9054af42685d6b65594fff559ec90f09c4ad5d6e23fb4975b9a31aa070b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDHM1712865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1194e88729b6e2cd72df859c07dcb8f8acc1506fe8c7e98044760f02f577b202. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USDHM1712867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e9fa698ecde2c9f83ed478c25f4c9e3ecbde06f23f0e81e359265f49d53124. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USDHM1712870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636d7afe56383aa85fe83df275c900d5d9672c65c6fe33a47cdc0862ae60d4de. 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/USDHM0904703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3d4181b98c36fa9d3650031d5aee140e30b294ada53ea67023a96c098e03e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USDHM0904712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc902db72c216425aeffb4e41a7f40dc133dbedcd9e01e9ba084be7ac9c8e2e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM0904713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7563749f8be5ab0f4e5b27ceb486bee062fdf01be39fa3b0d95f442f96e5b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM90641409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cec0e3dc49467fccf67300229fd721a8c183a925c124e71bf2ee9411a17ab6. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USHM90641411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bda54816af0bdbbd5ca1144e41b197cc687d979a3eafe91c91f82e0c483671. 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/USX9P0602389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f79c500378f4634e1420cd1a7789b20e654712e7fb30f42e145cf3cee247bc. 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/USX9P0602399.