1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2596a5adc6e783e1a2d044448154638c902a44f8565ca81af6ac0b73dc2c6a23. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23112971-d735-4eca-a685-9316cb49a1a0.json and https://artists.proofprofile.net/proofs/artist/23112971-d735-4eca-a685-9316cb49a1a0.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 → block OTSBitcoinBlock must exist at that height 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 0x12f1aa9b4e43fb0ccd0a5d920affebe17c7fd2a63e8c853a6be0e0f2714121dd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES91936265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6483b26a15f015e206d155ffee1f295a78eae7e776ce91ff839338f0f4b4c02f. 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/QZDA62033207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415cb830d94e3e3f6d261b6aaca66085d07d46d65a16dff6237a12060e918af6. 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/QZFYZ2100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc759e0f8c9f5ba064519c6e4b49c2b400ac1a588689026f519db19ea472876. 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/CA5KR2282792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc759e0f8c9f5ba064519c6e4b49c2b400ac1a588689026f519db19ea472876. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CA5KR2282792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f318948205d0197e2a6ee67815988252deb49da5581b7d07be85bea0329788. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CA5KR2301283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462f1cffc85a8096c2faca4c8623a2e7fcdbf70795ee0dda6efdc11199cfd66. 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/CA5KR2297330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462f1cffc85a8096c2faca4c8623a2e7fcdbf70795ee0dda6efdc11199cfd66. 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/CA5KR2297330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462f1cffc85a8096c2faca4c8623a2e7fcdbf70795ee0dda6efdc11199cfd66. 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/CA5KR2297330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc759e0f8c9f5ba064519c6e4b49c2b400ac1a588689026f519db19ea472876. 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/CA5KR2282792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb2b0b1072c09f8db18089f49b0bf3286755b9738bc5e84353c6ddec912f63c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CA5KR2329928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef2cb67092b9c1eb445deb4ff1eb93dee1231406f9232617f1d91fab9b30614. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CA5KR2294540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462f1cffc85a8096c2faca4c8623a2e7fcdbf70795ee0dda6efdc11199cfd66. 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/CA5KR2297330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933f78267fc5086a3ead50b52ef82751708b0530a0f6dd615fcbc0c3c10b666a. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/CA5KR2329930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb4a4f36a366c7ae4686500022c3286421aab3a985bbabb1accb214ffbbd583. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CA5KR2320288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a3a549df3d882cec890811cc26e3ab141eab7814c68717ce69df7783b3eaf4. 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/CA5KR2326957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ac9dfd09568ba30f21e55b33031b82679dd89f5b228c050c9b3e9fe65ed897. 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/CA5KR2308631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7bc6a7cce8d24cc27f266f2ccd7f3ed1dedb39537ac5f66c5fad7552c5bfd5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CA5KR2329931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f318948205d0197e2a6ee67815988252deb49da5581b7d07be85bea0329788. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CA5KR2301283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9abcaa4833a7f80828d08a11d34b65c49458597475d4473a827068852e3efbc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CA5KR2329932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44fb133a54a20a34ded52b6c6a9aa156c2279279c2fa6824081aa7c266c8ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB72472730.