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 0xc369c96cb09ed3ea2ea4e8e0e15f73412793c05fd8aed8d41e3e92bbcf20c9f8. 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/b8bb039c-03b6-4b5f-a45d-88ef585c6084.json and https://artists.proofprofile.net/proofs/artist/b8bb039c-03b6-4b5f-a45d-88ef585c6084.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 0xb70f8ec5d111e99a89e4949825ea7f65f856d9d8cfbe2517a940a0d6ff5c2b64. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFU2168498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dae50d6c4f97633c105b33900aa384f0b9489a41f25429430cfec7054ef5ac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAGQ2268359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66730c562ceacb51f3103753560e83f5cd2f630743fcfc0b0d40ef5d0789b2d0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:35Z), 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/TCAGQ2268382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a701bba503db88c1fd1e2d0ef0ab8daa04c6259297bb37bce7275b6772ddc25. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:29Z), 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/TCAGQ2268466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601608b6cb22a578cd07de00e417ced6af9cd745ea4f3e65a68804c521446916. 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/TCAGQ2268476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3579298f646fe22ac2c8f6c3d0d51544199534b62d8e6872f4cf93420fd5ed. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:35Z), 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/TCAHI2329943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e288a99aabacb6ecd2c548b9c65b45f1411cc4c76058ab10ee110fbb8c07f78. 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/TCAHL2323982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9c9a558864bfb1d24621a8150a95eed8ebaa981292a88032f45008e9c2213. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAHR2303567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988acab0f44efedb2a7b13e03e1f09d71e9fe259f6241b738b41899e05296480. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAHR2303651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179053ec565fd653b03e4eecca176c38421d13f5d58278cafcc754e56a61313. 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/TCAHR2303713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83eb6b64eec5504442f73bebf2e067a0a4fe0bf729dc680bb9fcc75d13ba1fe. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAHR2303765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e687de2cedceadf60ceaeac044b994680f1d768f649fdf0a176a5ccc6beb512. 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/TCAHR2303821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d063650dcc86b0de657ed0461624f5b0579375dce727827b703e6b266f4ff64. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHR2303865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191f26f33ceccc06b236e1e636b91237d5ad8ca3aa245a2c4117231c16973eaa. 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/TCAHR2303914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1231bd7fc863cef0628d8dd9d19b689f13b5accc73a5795c77a02dbc9d2539. 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/TCAIF2433350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34ad32dea131429a3b2086ba7f0c403fc1e906aa76ccbc8c21690d55a0f250. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:38Z), 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/TCAJA2451747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896bd282704ad67e640f519f422fee80a986e86297c751e71e8b2531edf4412e. 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/TCAJL2509391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed7d234b70e46992d734b803507e619ad70ca1628b431e6c88dc383fe1715b. 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/TCAJL2509433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbef229276a10a0fab2ba58d65c5d57b2b974096caa01eb3f4aeb844aa027fe5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJL2509460.