Dark Heart may refer to: Dark Heart (TV series), a British television crime drama series The name of a villain in Care Bears Dark Heart, a novel in the Dragonlance fictional campaign setting; see L
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 0xb5cbfdafdc2e33f6cc78d83529abe8853c9e6a89f794c8799dea51f236fc1275. 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/3f987bf2-997b-445b-8f77-fb5ac62e727f.json and https://artists.proofprofile.net/proofs/artist/3f987bf2-997b-445b-8f77-fb5ac62e727f.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 0x5199062ef4234debd8e2bd6f9b14c8e24abbcf010ecf2b8ad6d63342b031e38d. 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/GBUM92000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4501553cb7b308c371b2a592835974eb6667f7379f86549bbef4dda49eb9026f. 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/QZFPL2000041.
I Want Your Body (feat. Koolkid) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf975ed4433f5a0c440d9d617ef6cf61c22ab7a4093250c35b2655aa70e712e. 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/DEUM72117054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e7623c9af959aa6223c9b580348fb68d70b797359f3deeb8b152ec8d44737e. 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/BE5KW2200952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe906b51e1be39c6d68e04bfb48009bd21d5d6cdecf3627c9854102cdc86f4efb. 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/QZFPL2100174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8abdfc4fd421a4365e691808141b39593bbbf6f352d4ce555746934f6c2538. 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/GBK6Y2251371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c451f8d3e403756d320a6bf1102e6a6394c09399f04628597688086b095d40. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZUCN2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148460c3e84ed35c038f9cd27d991dce5e5fc8fe64bcead9013225f5defe1038. 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/QZUCN2200585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbffb8e430e65e727bdc2a6eb6df08cbe4eb30d5cce0f3c7ee632a40939dc4a6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZWH32300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa76a7baf1ae58ea4b64df3466fe6c3dc2d3fbd2859f567b05e4617aed7e862. 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/GBK6Y2251961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9cc873c9e1b18420a4dc855cd85d77786cdf51458d7c66433f0c9186b3ad95. 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/NL8RL2333674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637ac51f05426e33c8508fd44421424da0117923cb97a9325e069835b10f3f87. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USA2P2356085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8610d23bae7ca748de040a5d6a0ce8ab41769eb3dec873a0c43e7c962183f771. 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/USA2P2403979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964d7416668adc0c4cc9b39512670dec85a5afa78316fc6b4c543fb940e6f77. 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/USA2P2403980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd4a2c2f4845ccc2facfb1bb832e55ec6bc4e5e55ec075ddca2dc99ae19ac3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA2P2403981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f51177210506b3bb5a4db74d73439f72652c7b2c79340cf58935ca954ea41d7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2403987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3c6eccca85f622a8a54aeb3a845b67e40fe43eb9af0f098791b916f0fb8f72. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USA2P2403986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd4a2c2f4845ccc2facfb1bb832e55ec6bc4e5e55ec075ddca2dc99ae19ac3. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USA2P2403981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570d3cd85a422a08292910adf9f42003c13934630f168ee6a9f51fac81587b3b. 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/US38Y2404054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00488aabb967c59cf1d00a5228a78b37b21ba62b5f63ace59bd023dc6a493282. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBUR62001076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856a5afd50346ebd5b1635aa9b39b9177318f09418769e0c7a06f9c1ff25467d. 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/GBUR62001078.
Analog (feat. Amarha) - Maori Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e2a3092c5cd07f09c86fc20c08fc2c0732389ac685ac07523dd01c9f2fa707. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USNRS2544167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1373969f3721f8e89cb2196b88f2c526ca776158208cd77ca1956144f9382a. 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/GBUM71806281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6677d562f60350104a819c777d1abb7c719946c568d4addd5e2fc5e89196b4fc. 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/NLZ542200822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa431778ff401a4a40b889ed70a5793c512faaae217ebd46356c9978f5122ca0d. 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/GBUM71805253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f2845658cb1256565745cbdc67f89497e3517155530ee78cedfd726564cb0c. 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/QMJMT2103815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58eb23db91f4430c36639a66d2bbfd0665d7e96caa960aa460821275ba688f5. 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/USHR11838470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7751781f8be8f5f67e378f8cf366c6359b63ffe90f0227cb2aa45133d6dcafbb. 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/NOUM71900433.
Safety (feat. DJ Snake) - Dark Heart 2am Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca6d2bba6187c418895771d1446ed2693c5761bad0e50c07966b9c5b12fe07. 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/USRC11903562.
Safety (feat. DJ Snake) - Dark Heart Darker Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adb680a45117cc5715cb9b83ef5458e3ab226e98d5d460fbd557d688352a76c. 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/USRC11903564.
Safety (feat. DJ Snake) - Dark Heart Deeper Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6523dc86dac892219dde8376639243193698af2d6fc7b2e33b1fa17d0fd9c9f. 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/USRC11903565.
Safety (feat. DJ Snake) - Dark Heart Rave Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47513db26e331f561ac88080872e471d4a5a38fcb7ab0f83065e866bc30cfa02. 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/USRC11903566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e4ed85d81866b1f2badc11cdd2624c2600ea6ae4726e1c6c9548dbae799b1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBSMU4754824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e7df2920e802343a1023bc2e63bbec08d700c883a698973da5eb95dfccf759. 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/GB5KW1902099.