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 0x0d5f15c40d509f85dc34dec324a4904c4f94b8031f3fa5fac822cc6b4240607a. 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/3018bcec-3222-4f3e-a85e-7c334f62a4e6.json and https://artists.proofprofile.net/proofs/artist/3018bcec-3222-4f3e-a85e-7c334f62a4e6.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 0x00cc5e3ae1d07d8b17a32afaa77c017404d4591dabe2cd9800820d5f3f61c202. 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/FRX282048236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c38f9bbd36a194f0b6c136349f702f4ecca8e13c2bcfa119d84c911f3f0ed. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR2X42183089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752f6785aa9b136a41896f7f2f1d24b4247492c71a6ddc6ad4bcca9cd22e0fb. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FRX452110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd223e115a28d4ff9e7440ff47c38fe248ec29630212d979e8545ecc07bd82f68. 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/FRX872173243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6038cf6f5369804bd1e90c052292df7b4e8a1e40489231e675629961d7458a3b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/FR2X42229189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72060a26c328f2d0c354f9f893b0ff897f0c74b99bc274896cc510dd2e059d5b. 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/FRX202227406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e84fe0115c3890b1deb7bdd8db16b3818d30d123145059c759d49a613cfa41. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX202230636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f4f9fe91f2c886fc4774e4407824335eb29a8d133e264b10d8aa091b87b30. 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/FRX202223049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6cd9b29ca778d5452a86958aefee8068a6ae9344b93d49e16dcb809a9824d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:32Z), 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/FRX202291087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff3c21c5e63b6a12b878f5d850aa62b2d7d3ffa6dcfa507ce12a9d617a456b8. 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/FRX872235214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ec34d7c8443721a5a2eb8372b4431d4555b94af9d84286f43ff179ce6af21c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:04:04Z), 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/DGA0L2315943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b5ed6c60980bfe9c0595691f5eb7f0086698af14bb1f8bd1787f5d2539417e. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/DGA0Q2318031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5994a5de0e54ee894539196605e161619858382506198bbdaedd1987eae77e7d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:34Z), 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/DGA0Q2395164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1723c1e7e43682e72d9441b6c2712bf25665190a77b22b47046d4c4e4f9242f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DGA0H2429965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5c0a9df9200b332a13b687c5b04647501b2cb487eb75798150c2f80e60d0f1. 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/DGA0P2468960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17dd07be172df5a3edb97fabc73f92e73fa10a6928ea89f2dbaddb2699abe1a. 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/DGA0S2447037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee417ab1531befdfbe2a5bb4eb4cfa1aa9de60b808ac058895b595ecf3ddeb74. 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/FR10S2515212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1259759cd5b920e7bcf2550c9a01909c275a17aaeba3a2b0add752fc72b6085b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:59Z), 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/FR2X42529156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5a102a9f62b1cbb3d5e87480862bb4923031e73574ae8e4fd348a2177717a8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR96X2593077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95035dde8fd44358de262cdf0c7b73c339426bbba7543facc0a221f676c4862b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/FRX282514389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda65d21524f3b2b0c1c645ffe5dcd94d2eb0a4b41160f6b43dec83ac5ab4b26. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX762573499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345c23efc962e9210b340c9603ee3cfaa43e9e4f7dd6a6f4a053d52be47c12e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA052567132.