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 0xab6f6c3186e7d2dd591888106550f0e6fbd97f96d7df10213759d830158998b2. 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/1e36a480-be68-4924-a2a7-19677553373c.json and https://artists.proofprofile.net/proofs/artist/1e36a480-be68-4924-a2a7-19677553373c.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 0x7ac1a587a050828867571f8aebbc282642b9a353fde9265eb0a811902bc2cb47. 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/FR26V2015233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb710dd2340fbf613b8ab6ef1ace2a05cb989ed248fd10ba00acbd959124e68f3. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DGA052023511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fc14542c4a975dcdb2794e4bae91c41e24df8464c512234e7a9dbfb461f1ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX202223043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb943c5fe62b0d98f9438efa7f7e042e7b8acc3299e7b65c40dc16861f55cb8. 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/FRX872224467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda033646acd11f9a9e44738919fc17092bca9bc1f4d6ce6725fd4441eeabe894. 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/DGA082207711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a6c2ce11685e74cb9a2d2af474c698c9bf228d0908dbbdb9166d9684b41fd. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/FR96X2358872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8814f42bb1d899ff82c6c4f0b914baba6ac818bce85e8e6cda02a32535086a73. 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/FRX282337973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa39a0c454681483318eef442b9ff7ffa3bcb6012412250fe18dfad1119de907. 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/FRX762374486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23f48ba0e7e9db899aaad96eb65b0027dd97ca403b8bbd85cc26d65244dc89c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA052300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8c6acd19f4e64c03bfddfec7c06b483a1a9aa8b13dbbf34c0428cfd3f82cf0. 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/DGA072371429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9ca34a873f8ceb09cd6911871040744fe9e4774e5fab10048750ab90dbcf39. 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/DGA072379945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a319b71279124e6b15c3d48ae0e4d5401b54f1c0297d0cb42d0d3278597769c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DGA082341670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2e00bfe093c009a5a538e868c1cbae167e97cad0759fe3eb49fe06bec4d011. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:47Z), 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/DGA082354888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6010af618d50194921d3e271e85a5ed458f0e49256ef739ba9d329ede4a54248. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR59R2416203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1099450e41b129b14cdef0d071916300e0cf8b906804815d3eda39e92b35899. 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/DGA052453195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b80ef9b17bd294d33a4c748ab5e5de0d1545897f545bffa7fa59ae5533045d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:46:20Z), 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/IDAC52400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56136129b821b0e51edec031130e0fd3732228b4cae5d8ed5aeb40f03533ee22. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DGA0L2470821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc7b4bf61f90d5630f1bad3beabdac96fd9aa4e66a699af14380a8a198f8c5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA0P2442140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f407324901e3eeb2c1d2f795e0f6e3fe95840a865d7a2cd1339b6adf87688be. 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/DGA0S2460831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8cdea8b9324476d7a595c51366dcb305a1d189fdcefd0c6e18f084bff3af5e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA0T2430395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a649b82e65b49b66bcbeef14e6de6583ef9d0b69aca228cb7cb4b9af4d7dfda. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR10S2585052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6385bccb7907774d53e91fffb9b65bfdcf75fecf791e0cd294eef8ad0b1b151f. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:27:23Z), 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/FR59R2550591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc43b5c12bdfe4a28839aba87ac8d913ed3e48f974545e3e1f633629d989ee2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:04Z), 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/FR59R2592101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00ad811cab41b876a75d0639a233a9d40e0cd79bdc2afafeb41dd293e5570e2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX202521128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac11744fdcef9cce54d4bf19efec8521bd0f9fd14c2aaabaf1effdadf0c35e2. 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/FRX282539537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6268f8e88733b72cf13616bb549ad8903d6b7565ca5ce4b7b6e0ede120acd0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:43:25Z), 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/FRX452598249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa612beea1c186ec136711799e3d43b1630e6f8e86cc3fd3ff4781977061cb58c. 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/FRX872540831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf62206c65bad93e91051f1ed05f2925ec772a3a6d2ac70301b47da3927c37e3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:09:48Z), 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/DGA052520978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8afd7b6d010e27a46c4ca2d0ec4487c81c3bc347ca9678c8f2eebbade64ae. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:44Z), 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/DGA062583732.