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 0x50bdf21a52512239c7ec55e51590609d64c892e61a9a275020d6c34fb52874f7. 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/ad91c912-bc06-4dd2-a13b-18815261a71c.json and https://artists.proofprofile.net/proofs/artist/ad91c912-bc06-4dd2-a13b-18815261a71c.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 0x8d99553f5e5b2e89a942840a9bcaf3f14e0e9b7809c90b2a35ab94f5ab8eb49f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCADF1718164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb60db5390840ec2568836eaccafe60e42e72691450e7825b1a53b739df026. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADL1837966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73781845e8515f8f4fe1605343be4cb5abff999ad92771b447b4415a75f1e02. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:51Z), 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/TCADS1857040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e80070725e34fcda3c850f6b20f88e3f7c552a0b09aac16c9afea325b5f27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADX1817522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5370d86d6ed35ac51ac27996cf22435abb364fd32fe6ddfb19b4413a1890e9b5. 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/TCADZ1879952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4728fd2a75a59c259076fbe8ea70afd781e4c5f31ac44123ea0c0bf85ba5b3bd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:49Z), 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/QZHN82313671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b72808f8bcb81f0b8ffa687de2d10391559ba2519df4273a42eca59df865f. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZTAT2305815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7a8e387c046c468a4f99d5155081f0cf780d722ec551c101b81a347319d6e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWS2426498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16488373fcd587b99328d271982617edddcec4c75324003745a387e22aa12a9. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZTAS2469166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7a8e387c046c468a4f99d5155081f0cf780d722ec551c101b81a347319d6e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWS2426498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307bf2e446d1a52c9cb245bfa05dd6e3b8bb974727bc68f9339965c6b23a065c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZPLS2462505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3dd49ea862be80ccf4f53598999aea264c83c2dabc1d43662dfd714e03c903. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTAW2467839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522d619f98a14911f0a0b65f0a8a85bfb2295e35d46e3dbf1e9164bc2f8ef64b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB72492813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c67c09297b1958de2ab46f2f518e0f763ca756497db49cbdc64a5afa9af31b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB72492815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed083da6fa2688286809d609fe755a35699f473652e6e3efbaf22e68e2466771. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTB72492817.
Life Hits You Harder (When You're Running From It)