It was the final year of the Cold War, which had begun in 1947. Towards the end of the year, the Soviet Union collapsed, leaving fifteen sovereign republics and the CIS in its place. In July 1991, Ind
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 0x3a3eabc15969206e3f3ab28cb8ceb86e79f52c004524f9a88232f2f5a9b417e0. 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/7283bdda-7d70-4be3-9bbe-adb4b6ed2f67.json and https://artists.proofprofile.net/proofs/artist/7283bdda-7d70-4be3-9bbe-adb4b6ed2f67.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 0x99f46701641ae84e7f6587e11c23fd5fc948d736eec44b9234ee1943a16fb4e3. 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/GBKCF1900759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bbb7fe1a8ed293a0b71cffb40f16f5a4efb678fa3e1d36225b86c915f3b7b1. 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/GBUM72402685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9400d0d670edfe124faf86ab3fde093369f5ac0da6ef4f7eaf03ef8228cab. 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/GB2LD2110313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4126aab4eb809f60bee97955c4b38a4835416fa7c11156c57a68c66bfebfe169. 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/GB2LD2210108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118dae34857a17d3f9b4f020fe349011631336f3fcd5e1e3425bccfbb6d203e. 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/GB2LD2210109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161f1e1108fa834d1ece1925ec49e8c52ee70ef07bd9f7648fa9e4bb72f975e6. 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/GB2LD2210112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7556c4daaaa4d2c9e95bab3c00728e5d939ee0a0d07117677a7c2685a1d8b295. 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/GB2LD2210116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daabeeb2bd1f968ed03f583748e7ff04744a9e02b19bb2fd3abd68ff0ec60fb. 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/GB2LD2210114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490dacfd3eabe726d6fc8e118f418406b6b7647ebac70232770a91ed1aad596c. 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/GBUM72401970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ebc0a5486b7f790ec8db962fcc11c4d431c111d9860b2b9420a455f3b4abf8. 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/NLF712400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2936148827f8220af610fbf4688aee8e74c4e7d0759989086bcf80ab9c3107. 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/NLF711312388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6dfdb4fa3f8550ba963365b95c3259fc9b7bb09fb3a941092c04d825c17a6e. 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/GBUM72307072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9aa5bd17bb65e82f8998cfaf9677bb38239446d786137253a27c5be5bf40fda. 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/GBUM72307080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774b22da31ae239529a074d9963c10f7f5566887aacd39c703e9b35034472b65. 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/GB2LD2310235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9e255caa7a206a4867048d2751a82389e37ddb32754e601c61e6efedde6fdc. 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/GBKCF2301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7556c4daaaa4d2c9e95bab3c00728e5d939ee0a0d07117677a7c2685a1d8b295. 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/GB2LD2210116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118dae34857a17d3f9b4f020fe349011631336f3fcd5e1e3425bccfbb6d203e. 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/GB2LD2210109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df529b10d7878ad21af4a6382ce61415a04af2905067bea856a8c0312032806. 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/GBBKS2000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1619833401f183e17ca71059fae182c22ac2a33d9ae0eaacc038d011f1052b29. 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/GB2LD2010235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb3c91ae3b2f77f5c0cbcb31bc5de2b3a14cead68ca7d60b9c3e041609abc33. 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/GB2LD2010125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa329895a9e583ac797c1f97d4011c77a2e6673789494f249dfe923fbc27c01d9. 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/QMUY41900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6094eeb94b16e50be81ef656e553c8eeed6910e57d1ad410771b5c99dee30fe. 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/QMUY42000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e28ddad9361c14222f0cfdf8055be3cca22a17e948539f8038c57757c355ec2. 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/GB2LD1900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ddd2e9272f761f455fca286f5a6b086ad7aaa96c0f4f2775581e65d71390c. 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/GB2LD1900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4015073ad87c12528934d04432d63640e5fdcf3e796f544962bb4310be9994e. 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/GB2LD1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda83b60857462aa61245d83cf95ae5beae48e2b8ed6b25611f712cada319b56c. 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/GB2LD1800866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305a77ece9b1f640cb4e7c1d259a90a4cf8ad2dc36cac5e2efd53999a9afa088. 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/GB2LD1800429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e87d5a73bbad8f20e64f56171f04e3c414560494c32e7a0710e8fee960a7299. 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/GB2LD1700335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e32c5013ea0a3b83babfca85d182503baa3808aa834a2b87db64f61508295dc. 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/GB6UF0000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2dacd5035c06534b1370105d2361f41ad01eec2c9700980dfd5395210f7af. 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/GB6UF0000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ed80f788a38ba5522bad607d7e2452c88c572a9e29b5f8e945f661e39a3180. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBUM71600450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652c9739c15f5af71d813b49b1750bffd8f509f69c35a11bb6cd3f0db68bac6e. 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/GBUM71600451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73e9027e289ad6107b56f14afed55aca3a6e6c025a6329952d0200685960e0b. 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/GB5KW1703880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7763b3c8a786e28fc9ad1804b97ef5bebda71ad17f2c589605b887250ad54179. 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/GBUM71604795.