Dead Letter Circus were an Australian alternative rock band from Brisbane, Queensland. Their 2010 debut album This Is the Warning debuted at No. 2 on the Australian album charts and spawned a number o
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 0xe73f02955f55a70d58ae63efe833e78702ee1a0ccff3e5c7bce982fe4478b212. 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/36267956-537e-4ae9-833b-49af64e1541f.json and https://artists.proofprofile.net/proofs/artist/36267956-537e-4ae9-833b-49af64e1541f.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 0x4f436e1ad38131b21c23e93046fdfa1aff77fc8a491334f0e4b169dde1774040. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:41:08Z), 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/AUWA01000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551988d23338f4929465a703a9d72bf272f22a2cf4f7e86264c0146a2b00bc84. 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/AUWA01000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dc0f324e7d2e1d03b3294823c1851bb0e0e01f7f5b048dc9bfda2d0435b73d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AUWA01000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d446c632ac8da40ea77bcb9ffbb742a8f6a94f3c29acd7580a37e0df57ce97. 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/AUWA01000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828bd1aab01953221e3d8cff65d954d63727e7f1be167d8401463b240716054c. 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/AUWA01000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dd77d7c07b905cd525deb89d4f08235a4d875da04eac5c91f4cc19c92a8cc6. 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/AUWA01000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa312c5858af26484e42d2fc4f2ff890e82f8b5a2a3b9fca6aa75bf066fb2806c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUWA01000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e62939e02b5fa791759b8ebf7b75ea87f8e6ea386675c90b21b9d9a76f024b4. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/USYFZ1108403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f468f0917c2d03071a32706c83464700393e7ee86bbe681a3573fbad77197a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USYFZ1108405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d166d5fb1c84019f47fce8626283116ea57b6ef5e6feb47d116c89ff85aca. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USYFZ1108406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710896f69ea55cdce581ec29bb0b81a64fe872b956f404ed9f5422006283e003. 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/USYFZ1108407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab768e6d034e5fdf049a57bc2d7754f3d61030967e397ead15345d119d8696. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USYFZ1108409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee3fa23b21db8bedd3fe2dd748275d00ea21089564e4ec556838a246628feb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USYFZ1108410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85a3b7e72a791e85814f1c9ff9ed3a6fb88979a3f55e29f1d3be8701ab97556. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:13Z), 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/AUI441200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17155ebc360b86bdebabca986c2d44d0c6ca480c77b03a6dec3dba2e1b3617f8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:03Z), 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/AUI441200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b1464a9f067b3d3142b23d3f7124a0c447991a1ddd930d55fb8a73529e0cd7. 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/AUI441200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96831b0cbeeef9903d77451656c248dd7a83a67744d29d1aefaf78881b30b34. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:22:10Z), 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/AUI441200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed017726d4014de2a6b36bab41a180c6d51e693668f0bb1621a468a08a8bf25a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:20Z), 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/AUI441200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbf4d4ce358ef245eb6125af5cfc68000112b02b9e57b7ae5dfdf7bb90e106f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUI441200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e85438d8683a1f9c1f97412ea6715e9b9a4f160cbc70458aeb8e1f495ab9d3a. 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/AUI441200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3073ae389331717c19cb382864c37de059725a6bb7c7e9606ec1e04770d5e8c7. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:38Z), 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/AUI441200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96831b0cbeeef9903d77451656c248dd7a83a67744d29d1aefaf78881b30b34. 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/AUI441200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ef4f5b40cf47f8080e750070c5e174e63f1b480a95b483fcfd91145636086a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUI441500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f06385bdc6fde58a89a2b189f81f52d67fcbd7f326f26eee6b6a8ebd919b50f. 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/AUI441500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1dc8de541d1d1a8ea8a7fbea536066c26e9fe90e1393137033faffd9311601. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:22:38Z), 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/AUI441500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8cd0ba6899f4bd3b042c1530c05c2587edfe756491e276595529b3eb3564fb. 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/AUI441500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab4c13fa258941dd89692aa688fd8a778041306cb716ebfdec8c87b48651b4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/AUI441500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7583e6b1391bece47cb15fa999f186428ec48bef609a677417f548f13f7094. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AUI441500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e90e28d73427a735b7e0cee146311f14def406cf7eaa8097f1623b2e2f242f. 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/AURMB1700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c480761ece48824b8fadf6d38cf5088208bcb357f8f542fc7803172fddac9f8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AURMB1700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5932a7ea1951db519ec7ae3fc46e3bee3c154a23a7ace8817f6734f18e821c. 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/AURMB1700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c91747d833041be896b0be299b400af29eaf30af3421422e9fd2107a81b5249. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/AURMB1700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe179a6de9735f68f94d2ad41decf9eb6115e64b9d85944e3caec2398115d6cd. 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/AURMB1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55769a99bdcecd4b02c133da512a5ab07f8ae7c0baebe6e9404aa9d2f35ada6c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUOXM1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f1b6aedbfdc97f03506a913da0bac9e48f5632180c66f637ca62fee37cabf. 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/AUOXM1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2c4c27adddcaa92aeea21eb6ca52f4fcfd3225b41511f7c7725a4acff93255. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUOXM1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d4df50ebd10893d55f845713ac73634a1fff244f2abbb7f70e20ee464adf3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUOXM1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7c4a8494bc75449781f6dcf86cd38c1c1d10094417b51ae60170631207962d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUOXM1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee2ea822a6f48b6bf2826398d8e065f22a9bbbd259a04e30692361786275b46. 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/AUOXM1800010.