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 0x1c75b2cfdb432862a2c0bca193415812e1e4c545983ce2c24882cbcbeef4342c. 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/c01c124d-f7ac-4390-91a1-333eb47bd3e1.json and https://artists.proofprofile.net/proofs/artist/c01c124d-f7ac-4390-91a1-333eb47bd3e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cultist Simulator (Original Game Soundtrack)
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 0xa2bd25467cf67f4448a6cb7f8ea18a8c4b8e54915e01ea01e35bdbb48ca9d542. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:38Z), 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/USDHM1828034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e7d03ec7ace411bc40f9521cda0b3f2b4de59dde14ac8c50f287b052d8aab1. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/USDHM1828035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caae3e15c126ef1f03ffac64e9375b48f2adddb1d3ea05168522a087cbf805a. 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/USDHM1828036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac711dce3641d8dc892ad006feea54f11a80995d329bd1f38b465b1022f0d5a. 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/USDHM1828037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02384ca31bf0b741af2e60893ea576649521f3998945cb54d2dbb7d3c21e79c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:06:41Z), 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/USDHM1828038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fbbf2883978e8f7d8dee4a80afe64f4dda3430591c5ee707c3bf27a23aa824. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USDHM1828041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a87257e4fa4c6c309c8c20190644e3682a1e788ad2e9ee5b0453b504bbf4ece. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDHM1828042.
History Is Less Certain Than We Are Taught
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7385b1d6de6b30067ba346e0b4f9280ed4cb0f7c8ac2bf519968c56abf14cc06. 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/USDHM1828043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff07c2d1d574b21e728968412f8c437e9f80a89bf3f0ed62a79e020a808d4a. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/USDHM1828044.
Book of Hours (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ae17e648ebe5a3db1680f8855470fab5f0d9824bd5440db392b71891ea93ed. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:09:01Z), 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/USDHM2311059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25854b4d2f384009a8ddc4f091043dc8100c1c6b759ae716592f15265840d095. 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/USDHM2311061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ae0c1a21633a683e2d7a890fcb680a8a36bd2cfef818fc54a8968c2a616ca. 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/USDHM2311062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002e848ebc96540a834331d8c5d8759eb1add39fbd6d2b947c11c86a16675866. 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/USDHM2311063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f31b18d1767df2d5e25b113d6d53b82b7ee389f5907ca113b4d2ad5e47c0510. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USDHM2311064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0da97fe6ea467165dece5d3fd32882930d02fe10652c474786f2e1f08e1b5d7. 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/USDHM2311065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6572bf8f73f28d0fd14f35473a56ca1e6049f7ff348a594c180d76992a70f0f. 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/USDHM2311066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81d3ee85a31d07abc8515e16f8bfa08a040726a9a5adfdf620fd3f0e5f5d04d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDHM2311067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a6a1f76aa7145374dcd886a23fba03279076f213262f88ccd2b75fb050d01. 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/USDHM2311068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8e7859dc65ef06f2854ed07582a3c4c56078397ee7cca33d84bae13ca05e9b. 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/USDHM2311069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cf138fdf81cb3cab5db7102e98cb0be034f3d0773a205afd8e982070810f30. 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/USDHM2311070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3f1cfb6bca77c5782eff47cf48b89c1edaba40dcb4797f3e8750a1c29a2015. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USDHM2311071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4d7e5bfe4969629144aca80e86b29d611e88b1938148925f257dbbd18184f5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:43:16Z), 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/USDHM2311073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa0d6088f6f9b6f26bf62266f62d29f34d16b0c3edd66f035b02b14345a4ac. 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/USDHM2311075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07b5272f0b189af4af4cca738bbda5f13b73d6c7ac6787ffe92a6eec983d184. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:59:08Z), 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/USDHM2311076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacde449fec967093d5ac0b987d75714ea5326bb7b153993d1a7c25a94bf6bb46. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDHM2311077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e0652cf28390809c0715c578b462e85b2ec563d76b41b1b1f6d6dee47b561. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USDHM2311079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35ac4b65352a96ae4997ede1904a1c733542cc35608d6801d51ae671ac908c. 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/USDHM2311081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb088d8df45b4c1fc541b20e1f5c6e2f49d1af44e1a926529f2f10990b4d6db33. 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/USDHM2311082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0c9febba6a8c2ac7294830a65d89dccbbed89324b4b4587050aa7efa571a15. 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/USDHM2311083.