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 0xae43b871e3f051e850e0f7877a3d215f9a7a49a8047e6ab75f5888c916edd06a. 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/fbd132a9-d19c-483c-8447-695954f8bad0.json and https://artists.proofprofile.net/proofs/artist/fbd132a9-d19c-483c-8447-695954f8bad0.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 0x08060fb69e0ac8044b4527260cf8035b5566913efce4bafbcf797241ab819d6e. 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/FR9W11505993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e2ab377805dec6e84ba695f9ecabf44ff80f2dd7c4862bbd236656c666085. 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/FR9W11505990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a4e58a0b1682749b765e892e7754b6609912bfe031b92693535426531e3b54. 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/FR9W11505991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ea4fd58d3254331a14fd2b475bd90824598159f7ad5feac8fbdcf2ef3442d. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:30:03Z), 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/FR1A91600847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12a2815554ba4dbcc0c8144b5ce9943dfb68235b8ebb3581d0f210dbd4da9e2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:59:07Z), 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/FR1A91600845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4037f2598933d5461ca98bef5fa9de3b1d919bc7e22c8a1f74cb31061663fcf7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR1A91600846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd36156715557b922f8de4264c890c4f4db1007092ebf9d86d2dc815bbfdce7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACR1653499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c6efaafdc6a4c3d80af4cbbc82b5e536611910579479c5347bbbc171efe1e5. 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/FR9W11618337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c61df1e5ceb5eb2d4916e73def14aed55422b08b714aa7ffedb37ad44f51233. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:50:23Z), 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/FR9W11618338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c256fa78efb9fc3fef913db5b92975526cb8af6222ec32cd45d839c8eea14. 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/FR1A91700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc3ce4c3ca258de6a160fbd9c185981a583e6ee8208895fce44e6ca99ae8c2c. 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/FR1A91701428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b4785542e6072b34dfd576eb78f0f0a1f4c939ef72d67c16701e90c4f71153. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:34:07Z), 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/FR1A91701430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c24e949ea87de42fca64e9ffe4cda4f86ff0b77d4152214dd6dd7e31532400. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FR1A91701432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792d86deb6fa81289939516a552eca78e655e8b565a10d76b74d7829535acaf1. 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/FR9W11720973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece64f9c353da755dff62fafd055f8b4c7b5eab47bed3d3a7a0c40dfe9659bf. 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/FRR642101100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da75d4887b0d18217c5923cd16871af1098620a0f7ef2eadf048a20db27d214. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRR642200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cbf516c9e2464d01b723773909df3f82c3c8d068702f82207395244b931355. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USYBL1500857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a34d1bc966671cdfae6066f964f9fd1d65b12aab038943331df68d57085e628. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USQY51614794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32fd7ae809886146ebc8302cbe69293be6ebd0477357f20c24c47d371c5e55c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:39:31Z), 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/USQX91701700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9779ad7a30ed7a64df4e56c74bc68266981c66a0fe88b7a2426affb97b59635. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG11501117.