thumb|300px|Mickey Hart leading a drum circle, February 2005 Mickey Hart (born Michael Steven Hartman, September 11, 1943) is an American percussionist. He is best known as one of the two drummers of
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 0x75478b2c834c20a4bb259aa3f751c9742e4e5e185b91e4ae5954e1b0abee7b64. 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/c997f3a9-b8de-47a7-bc08-0abe037b0e8d.json and https://artists.proofprofile.net/proofs/artist/c997f3a9-b8de-47a7-bc08-0abe037b0e8d.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 0x6b32769cefc12ca627d577bb21cdc497140ba840603e92dac5a30af8a564c82d. 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/USSE90729530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5bb3cf2543dece382fdf761032b19e10e95ea14ebf6824dd53ef1655ca18af. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USSE90729531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f39a14ab3b1eefe6b099feaadbb59a52b0d4a589c7cf171f064d864632222ad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USSE90729532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e54ee633345a12110a91349d7ba7d7ada22d12d47cc4bdc09f28e8345616aa. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USSE90729533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded8bf39b72d24a34d96b6216e6a41bfbc3d287ed5e1733158a0a342502dbc9e. 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/USSE90729534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e66a50389d3efc9141e42e4dfd083b798d0f7e6dd9486f9d4d5dee4526c27a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USSE90729535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c6c4fdc9241ab7fdc19c0a84762174a36dc8bad4723105012e9024b6d9733f. 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/USSE90729537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdb0ced15603207cf0b0c2e4fd95b8d9e5bd80ee5aeda32b4eb0ac40db572ac. 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/USSE90729538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9e1cb4c643bf78f24074e1ba9ed122922c6754ed3db360bf7a31816da130c. 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/USSE90729540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38308c217a7fed1c23dacfb0cbed78e67511ec4ce7e0de9ae984cedf30af128. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USSE90729542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cce54682655031a1fe4c4f186edc1bbf03b59852f5138d3b4c374d776a4da9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USUG11600909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8d41e5d1829b28baf4d2de065f39916120df3fedee13a63ac43274b7c39c8. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USSE90729569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb034e6c7c4c231dde9c1cc56d089ffbbd71319459d15ecbb1b33ee1b108a7dc. 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/USSE90729573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043b612035f59d3afd9ca42e87d7c59919a5b5427563ef7d503fa685efceba1b. 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/USSE90729449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71caa586046ae14bd9df50d276b06fe3f0fcf9c4d8e2a98442e882e9d4002efc. 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/USSE90729451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79fdc1f99f2d718df8f6817ebd615a412f0142016b24c73a5da46df943ceab0. 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/USSE90729453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fda15ca3e6dae67308e0687063d24a767066c14ea9787a41b9089330997b78. 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/USSE90729448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f9a096920cd7d3c8220798aa8d9142e2bdbe404eb3e65f68ae9f18a057784. 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/USSE90729456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73783e185dc762c195a145c1e4b93f18d6fe2c7513062800c123006a66361e4. 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/USSE90729450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a083f451ea67791af4de2f1b255ff111c39582806a568cb0cd9f39dda5f256. 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/USSE90729455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefa76bbbf6f6018f30524a70690bdefeb8c8ab531ea7e5b3447d370352afa3a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSE90729452.
Big Bad Wolf (feat. Tarriona 'Tank' Ball) [Strange World Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16b3152a64857f00d2169ff6c9f27a49e4d98ddd48fc9b4072f091cb7ace96f. 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/USAKS2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df13625d2338a7b8864250589ae799968f2bb339509f58f55399e31b35f8c5d. 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/USAKS2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f5814cf39b73a8e2827b52e79d900134df5ceb49a52e54121c97bf76be87b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USAKS2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc432a25ca3f1b518d7262912df8df9fdea2450993a3cc66d8b4ff5c586fd8eb5. 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/USAKS2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ec19132c2e257491c0459a87034474aece281bcc6634c32c667c8b4c0b1ce7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USAKS2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc6b345597e7608a9079065c670007bda07a211c454687acdd7339575e4ded2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USAKS2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685dd1b89044ad56c2084777d128e04b2999db6130158bef83d7f425ef0400b3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USAKS2200036.
Dear Jerry: Celebrating The Music Of Jerry Garcia (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e1282f425d46e1285402c4850e4c4a3fb0c0eb5ba79a97dfe482d445b466e0. 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/USRO21600756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1dc446c12db048616d4d51a8942ae9bd8e33b938257082e996cf7f67010d98. 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/USRO21600795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca6280f37edd1bb01119356879f8c8193ed85da0456e5025cfcd431e968da45. 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/USRO21600769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346ccd62ec7211f736f50cf4bdd6e8a0cbdd37986842001e4d35462315c64c12. 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/USRO21600770.