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 0xc172d1a70b991ef5b7e85cfbc61c8a087dbd33e311359c02994e381f25a84c0d. 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/cfc5c49b-ae30-4010-a0d4-cddf733bf7ab.json and https://artists.proofprofile.net/proofs/artist/cfc5c49b-ae30-4010-a0d4-cddf733bf7ab.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 0x7ef4d228d4755879ba7e6da96c44696e99a0778f41f56c474480ab491f465b4f. 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/FRX871505162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd998b61bcfaca30c98bfb37175563b1d8fdf4421141e63652e67a32164138a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR96X1633186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d1661f260a0be9c40c7d202c9d60b28f6af78535e8dcb2c898a6a2894d4ddf. 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/FR96X1633188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56552a793d204d09e7dbf2ef4002ce0c1ceec4fe33b3e0c2efc82d9f0cc84cf1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:44Z), 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/FR96X1633189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7141170ee086ee9b110a303f360a9098dbcc767c39f066a307aa6bdb1691168a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR59R1798483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53061ce7d1a0f41cce4b2663f145a8831db3789a9564fca95e9d4e85097345e. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/FRX281956576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61087a1b607b9942eb85dc5bb3849eaf06813f466b3b923c0d3059987017583. 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/FRX281956578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8932f32bcd5834dfd89617fc189737b8d0b231b30691487cce918deb3938dd. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:14Z), 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/FRX281956579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950446723e19609f5165194d99f253c31b16517209dc875e839dbd4fdbbbb42. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:14Z), 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/FRX281956580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b353c84337b3bb52f7ff8ddb9da02fc370edd52384747c709ab1142697d75f0. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FRX281956570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1d9be3861adbfea5fa109b64ced7ee1ee95ed5e683f066cdaaeb1aa608c608. 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/FRX281956571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0a35e6a440f547761e121d4c96f92d54a5fa537de741cc8ac8e80b3f9452cd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRX281956572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998a32ba53df0fcd37d64ab79414828d9c15e7731a8d74e731baff7c7d86a68. 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/FRX281956574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde68f6d00ee014a48f387f127cab6715df6ca22154f1763dbf235313f12cf85. 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/FRX281956575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5c24817d82d1419fc90a3ced776ec10208ca1d44c393a44a25747405fbbf3a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ESA012554109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0d03813cdd95a15386c5913ebcb977dcffa0c070618c99c81f78ff8f79968. 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/FRX282501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a138e330e2a864e7d1eb5fa25e58a519c96b3390eb3a3205d455c9c1fc7b4ed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ESA122533942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924c11b8d66ff38bab53776ed8eaeb6283f702065fad839dbe281a1844d5f80. 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/QZNJZ2586351.