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 0xf645134fe0b9884ff52cab8e5a38a0570b197340eb3f6f15dd8aa8d4c0a67640. 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/abcbcd39-679a-46f7-9346-099a4d0758ba.json and https://artists.proofprofile.net/proofs/artist/abcbcd39-679a-46f7-9346-099a4d0758ba.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 0xce527e0f161e1827e27dbf46c732f1f01f2e4e773b3c18282d1b1554dd266f55. 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/TCACQ1658283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142bd2bc8ed44f590fa7fab18673b7451d4674acc59c25b1e1ce96c8e99d4a95. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCACQ1658284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93db8dd87cc030446ed4ca6cf98ee48b4a29bbbccafb67476e3ee7086a7b070. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCACQ1658286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f16e3455169cce3fa917ba50e249953fd04c5a95cf888444f3272ac4633beda. 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/TCACQ1658287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96f0dbd5c9f035916f1d837e873a5a5f0fd8e3e9a7890eaaed98388d45ec042. 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/TCACQ1658290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0127a865a03ff06edb4a3ef5e7c442c68da3ef828bc49e351fbdfb168a107fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCACQ1658291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a8c40d00b3d317ab83f02f5db82aba243751e54a71dad66afc4349d9df22f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCACQ1658292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7d0bd72ddb4bdef31dae5093b00e8e69fcec42d405e32c72fa8af89dfd75ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADZ1881530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4126269ba25dc6853b7a7370ef2b0dba63895de4a5c944288b43e52221596e28. 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/TCADZ1881533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6f1c2322723c9386411b2609a738c6d4951a3f55c0c2488c11413bc0d3cec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADZ1881535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8587a2e320a21582ad020f9179be75db14acb215506a7414d88fed723cdbddbf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADZ1881537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e99a8b56da30bd268ae6288e3fe61255d3293c7058eb9e6cde88b188daf2d6. 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/TCADZ1881538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6471a42cf0d25d1b71659094d2f24870d87fda6f64f39df1df9240ee4d879fe. 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/TCACP1607543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819ca5c5f36d55fbb652b1ac0dec17b44bae19c95ab4ffeec674ae9ad8125676. 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/TCACP1607550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585965eb6b850752766cc596d7966a3b922addead1bb74b4a3705281e91f948. 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/TCACP1607551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657ab8470773a67b55b0970d37afc1cce8770925bdae793f1164393f6a687b6e. 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/TCACP1612098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcdfe7bd46a5666ce017440faf5744dbab073f7bf820e762a10799e2235eb4b. 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/TCACP1612099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7821dcc6e406779b36345ad81755d70114c50eb6a8b714d6553b34dd29c12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACP1612100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c55302c7a8e49c16b405e134adc9c4a8ecf53ca177d73f7c9039a681a4484. 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/TCACP1612102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3c8aefcf7e17b1982d42873bf5e597cd9c53638f3a4164948bc3155a98ff31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACP1612103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2e0308c3a165c7c3be31c6a0807038ced10f8600e004d66e794416327c9bee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACP1612105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12337adce7395ab8eed2ddfc797532f8890d6cf5945cdc1a074de5d20d58b7e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACP1612117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcab5b6c416981f35af9c2b8153df733095fef185185f28156477be9511ae1a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACP1612118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328a76e292f2fdd94b8bf102433b208a0ac2cc971737a5a836c544852d5b1abe. 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/TCACP1612120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17bd300acf8cc4d1e878dbcdc254b9e676776ef856a8fad61807cbaa4c5ed20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACP1612124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3e93e2f387c8bda736d8510b898e39d955512b120ceb817c9751241ba74f1a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZES92046747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fe9e0034e2275d65547050aebf50e664613cb1b60855422b2b63375e706674. 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/QZNWV2096841.