David Bromberg (born September 19, 1945) is an American multi-instrumentalist, singer, and songwriter.[ David Bromberg biography] at Billboard.com An eclectic artist, Bromberg plays bluegrass rock, bl
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 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 0x27a0616558b1d8c0160e3e4cc41c66980c4bc65be33fbd52686c17bf3b807be9. 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/9c3c99e9-f133-4c24-87ef-0fc3f15ac298.json and https://artists.proofprofile.net/proofs/artist/9c3c99e9-f133-4c24-87ef-0fc3f15ac298.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 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 0x0755ae50325505634d79df7e71331ad7c9fbaf1b501b7645600e868de9002a02. 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/USSM17100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243d4d79a81a78564b667d036212735cb9b8e346964e8a240b4a92b53b3577ad. 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/USSM17201033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a7b4a933b2d08b36457189a445c0bc527a00f48c300e8e71adf8cafeb54d0a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USSM17201034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17482195da74b269b09529d9648893ba7066b9a8a4815b364a3f31423b09d457. 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/USSM17201043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4ee24d1bde6b186b8e13aaf126a03d55a8c39f6f7e28c3c517c8fbd39dfa90. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM17201044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c74409daa9ec1eadeec9784d91e47014ee5aab4d154d96317f482789e62b2e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM17201036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d98b0c4cbb71757951b8f6e017007269f3a18a7286015ae31edb0772863e63. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/USSM17201035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f908148e02585c3255b1719aa671f6f1cd5def91227b9169696b126836974. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM10024183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9f4fc21adf81abeafb817193b8ee37b75547c1990d693350d93d994d39fc9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USSM10024184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395df2a188e6f5b780032fbe75d0c47f0857d1efe6e777ba144056efdd2ff748. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USSM17300450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4f7ce2de916aa78320bb2d5626e568a2c7d52b68344d60cd4c41b5f7bc8d82. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USSM10027686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b5c510ca0cb823965d0719b57a379343ad9677af5bd8b4586260453c84ae8d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USSM10020167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937e5280ef5a3d8cc6c21030a2344aa473e4c48bf6a3aee247d00b94ec1d9942. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USSM10024185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e199a28914c3da68ff95878ec1e4d459aa05124c6cf31be85a46031951686. 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/USSM17500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fb41bdb70c0856212c8fdacbc62b7a267c128abafeaf61eb20a3b1fee720a3. 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/USSM17500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aded6028014014196b4f734b5b9fe30c44459aeae60141814e9ccb1897bce6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USSM17500811.
Live From The Record Plant, Ca 18 June 75 (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75981d8edf80799bc3fd402e8ea05067f9b6475e4f7e03a071c0c9a266681350. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USFI87600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8827779206f10967c8e802c89a450f76306daabf20ff0e2d4e4e960e269089a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USFI87600236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29658a6853c1a92ea67355dd17e9be0d6fc2b926f70edb92d3acd1cdada4c37. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/USFI87600237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29a7b655c3440721fab57b731a268302659c33916618bca25ab04d911f88ce0. 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/USFI87600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a65958463d37b01a0769f608edcdf4ae0c297182f9b70d8a13cfd5a01d325. 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/USSM19916988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0274ec141c907466ab635ec975a72711cffb8e6b9ca73502a741f2490f34bfa0. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USSM19916991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e7e3d2aed66d1e5b0bfedf4ae0ebc1fced9d5e62dde786d66355a2aaaa811. 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/USSM19916990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfead0df1c82eed451cb3755dc2dcbd6461b42a833643b0eb6c99c41dddfc755d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USSM19916986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22ad33aaad0825cdbec1db0299b8316a3d813328b0b881195553da74670de4c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSM19916993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501819274ff6ea5075cd696963884704724d073f7f59693cf8f2435b8f6969fc. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/USSM19916996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3d5abe024b67f8f50b6217d19d11545a02603386872a239e955004dcb0e5ca. 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/USSM19916997.
Live At The Bottom Line, New York 12 Feb '77 (Remastered)
Reckless Abandon, Bandit In A Bathing Suit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0916c6130f8def6c694aeccce89d394a0cc154c776ed0085e2e3521dfa5571. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USFI87700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daf0dc6cd2cec47f2dd2e161b53ae1c134e48e899c28b7cbc90b07eab78b2ec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USSM17200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ea5337f38e6d937db00821ae4c476f627689f0f7095b6afc114129b8bd5472. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USSM17400274.
Reckless Abandon / Bandit In A Bathing Suit (Reissue / Remastered)
My Own House / You Should See The Rest Of The Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a81fec274aea769b1d80e8faddb01b68e51bc006d9deb9e93f684b0b27ffed. 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/USFI87800256.
My Own House / You Should See The Rest Of The Band (Reissued / Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9a18afa8542a86d4709f026665f3a0b779db00fb77ba2eb0b2f38c13daaad7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USASR1112702.
Bring It with You When You Come (feat. Levon Helm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6883aa9a50a7498b8c688a63d6c6bf7391f54551e07b6f9578b9b54acd4734. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USASR1112703.
Live In Utica '77, Stanley Theater, New York
The Blues, The Whole Blues and Nothing But the Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71ea9c499bdb17e829ec747f45da4eae8145fbad5fe7cd3f08dab8ef46d9e9c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USRHR2031501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8f2864c73f9be2b8c412b3302d717e81dce9ca054c873e44944bd4ac41825d. 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/USRZR1600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d3a15e3f321d1974fce5861922c45d2f80671988afe6ec8d308a879768ba4. 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/USRZR1600071.