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 0x651c8c42cb04c944beb5a298db42b83e2489a1e4f5d42c2a3416ee2a7145c1af. 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/0b0841c7-943f-4496-a8c9-100bbccf1a88.json and https://artists.proofprofile.net/proofs/artist/0b0841c7-943f-4496-a8c9-100bbccf1a88.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 0x15496beab3bda6616473085fa89cabf7991bfbd38ac8a35db05100d79aa0ce53. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:53:53Z), 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/DEPI82431000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39f262b0bf449f18764f432bd5b5dc582c9f65827b801dfbe7534a6977f9716. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82424174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecafadcc10803b44f23192cd1099241dfa5252972a9b4f344c3df035a315d1e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEPI82424175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd456c6152cfc71a9ca45463055f86beae20c724fa2765339369740a5297fe14e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:24Z), 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/DEPI82423752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaf957e5233cc049b48d04dba546e4af76f6a89122a3f2d18054d04d3fe3522. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:35Z), 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/DEPI82423753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f8c1d6653b7754e0b9f38135db99ee3592bbaab1be92dcd9dbf166537255e6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEPI82430982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa201a34a4a256984354c0715252f9796c4487748c5ae26a2adb76143e1211c80. 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/DEPI82430983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8b4d52ea727842457708c38340202df711ec9694089e4cf9ddef0fc81ac9a2. 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/DEPI82431074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d19634c244465e1eb9bb4c250fc034de692a468195c8078daeb42b334b07bd2. 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/DEPI82431075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49b5058a64e49892615ebfdb1a824ed6376470b95ac5cb76c01e69acb862254. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEPI82423757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e28efb8b6dc2e7b41eafcd7c44392f30e6f7665a3983c623c5f4438997d469. 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/DEPI82423758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf634e53871764b420897585620564cced7f13acccad885618a7762af4c6aab3f. 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/DEPI82431069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58af0550b1089ff8af1000aeaa5ea00cf7d97a9ad58884604b7b6660e0f4d6f0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEPI82431070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb84e676ca7776275be06ae2a52fa96399c92332b6ea23e92a649027ef89081. 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/DEPI82430964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756cb73b415aacc93b6acc01f28c136a7f3eab12cf10aeb32ea2913effe5a8fc. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:54Z), 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/DEPI82430965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea81a1b6b88eec36faadd921ab326482964b1e71827f2365523baf16ce8199. 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/DEPI82430972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21a32f39e271e5b6a4ed8ae75c98544a5ec7f8412b81ccc3e8cdd7397326aa4. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:40Z), 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/DEPI82431076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2ca800847ee877849fd637ff25f0083957c306d8c488df4ff4bc34f314e811. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:30Z), 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/DEPI82431006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf937475d609ae821a1891b8d7a49dbfeadf263da4482b0f80266df1e8fabfa. 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/DEPI82431007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2567e6669b5993395b03f4196cd69ef9d42cac9e99d1a1770321858c421b8f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:39Z), 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/DEPI82426139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcd98ddf0881cba9ca3fb0b1b9d8eeb1a8297a98e281d4da195d5068233ec9e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:21:22Z), 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/DEPI82426140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d85ff0b040e894f22679b4d009dd57db50c92b6f8e4cd0de2886e959520fc75. 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/DEPI82431072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3922d3a425fa4b9457162a3928e46eb92219ccdaa595877a68ff64714b33156d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:27:57Z), 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/DEPI82430997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57eebc995659fdbaed92ea19528c638a2d7292b75499d1b979c085d16aa5e94. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEPI82430979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a82199e68e22f5baf93334277b71c7fc1f2817bf3400403e0e394bf28c64302. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEPI82430980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6480c7b4125e664d0dca38f4af3327bb3010c9c9826b4e2bae4e78caea969c4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEPI82430970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f4856a076f83fedc2b9d7a47cb9024c1905311f407dcfe77dac3f8b19b12cd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEPI82423759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53808a4c2887feb1d3e6c56e2f4736d7823adbe425e50e5f56834fbf9e0b695. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEPI82430960.