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 0xa47a0eabcaec7b88280250970247118d9bb74fcddb3c34971f293d3bdcf13165. 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/43349f10-ca25-4278-b7fa-6f8330bf5cf4.json and https://artists.proofprofile.net/proofs/artist/43349f10-ca25-4278-b7fa-6f8330bf5cf4.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 0x289abddcb29c482d502f2dfccf15d319ff1b571f27fdcce54b9137b4a1723f41. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2436202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1ded46d2e639c893cd7669cd078598999998589b8b56da8f17925ba1f0b4d4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUMEV2436209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4f722e693ea69ae5e9eb4d8f33f75e152401f6c1fa147a3e20d4157a5679eb. 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/AUMEV2436379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ca39fbba1076bd954c8e2deff9acfb81b46eba2434b69449178d103986e0ca. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/AUMEV2437185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0682223a2ccd4e7957ba9db198c5d54dcdfe1e1b87eb95b4da00cb0d7ff236f4. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/AUMEV2437186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf7187e065ae6c129586dcc79c09be7a5d36aa400bec9b814f84572ebcb8d4b. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/AUMEV2437188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2523f76bb8def7a43cf987fe1a7ed5d4e894443e176c5e75294a5f8f193b95. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:19:03Z), 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/AUMEV2446655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0546de067afd588a16a6aa979189c7fde3611f32c86db266d4807ca6fc3e4393. 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/AUMEV2446657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113ebd4d686b5c77fc1978cafcc06caba9c0ac5219f21e4bb0ec73f78cd7c24e. 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/AUMEV2446658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5e29268551e56e1cf54bd9ae7a1645cd638f29aa58fb940b9f4c7da097b35c. 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/AUMEV2457939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f70dbe75187402a2cfa657abfd179d4b54e1deddf8084a4d572c47167bfcc1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUMEV2457941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745bc735cdfd3a45fa5105c853e9a765bd3e298d4bee2477e3a0f82114c4653. 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/AUMEV2457943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5c9ea23e9daba4beb680d8cf2bc7f40f79094641d435ce2da103a957a0a31d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:41Z), 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/AUMEV2457948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762aa920c2ac9890f014d9888f285a9ed48955cf4badf0b2babba65f10fee677. 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/AUMEV2480409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223f03ce1427a5d2d00fde7ea9010d1c785bb74ccdf9ee3058e03740de823480. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2480412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa11ef377bd8ef41a539cbc6dc0de60620b529be571a2060644404add0bab70a. 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/AUGBT2486053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3f3dfec39ba95aa2a366c19acbaee6a8a68b52d9c0b8265c209d0ecad1631f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2486056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d310e0e8b7cc57fa3da213494d2b163580a757b83d84841b46834a42819a57. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:33Z), 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/AUGBT2486060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc07cf2b6981bfcc7bf550ef0b887e7ff9e9959c90df31bd6b3989892e9bfb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:47Z), 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/AUGBT2488586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912a9071198082bcdb3e1c434750ad95c733b8f90dd6832ca328108a6391059c. 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/AUGBT2488588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa778f2848de32d7317d583b2964043370033cf268b7ef4a4a48d62d1b81cea9b. 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/AUGBT2488596.