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 0x9d4f4fbc9c8d5cbd9cf4879a4208dcfc74e611aef16f7d1d5f06318e416be33e. 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/5f10fa77-b62e-4bc7-a671-c73d8e66074c.json and https://artists.proofprofile.net/proofs/artist/5f10fa77-b62e-4bc7-a671-c73d8e66074c.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 0x2492bac9a1e6a5c83d74bbf6e6aa39ef05475e4e078a364593339d1ea196b862. 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/GBKPL2213582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31161ccfc307b30d2e3d11796feb69cd9914454d308e8fd9c51109444e0e9a6b. 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/GBKPL2213588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27acb703cf0f2be08a28d6f0ad6a13e00e0b6fbf170cc79917df7dcf1bc9db39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKPL2296795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fb3a3f19f0bd12e1a8f44de85829ee8f14e3e2d994aab97b37b9ee04765507. 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/GBKPL2213585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6f61ab8e0e7ec81a245648b9fc5b25e1f25c236ff1d42fb195dfbd6f3ed49e. 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/USCGJ2205428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee31643aa446fb2c263bc0c518be0a49ac1b41f56d1c034b55c0f394dfd6372. 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/USCGJ2205430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a044b5cdc1b0e779c273317a67da9fe91090d637ea2a45026f911f066ebae4b. 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/QM24S2104695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3ce3b2091a36f6df09af31cdbcdffe0f76fa93bf522093fc3b9033d1da006. 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/USCGJ2205432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6687525dc69f8ad7e07f3b0698323d25f9a63c70334cd850a9f8cf7a57145b2f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S2106382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2260962a596175445973a3e8668118775bbf46a5101f5fae5da67492f08f3596. 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/USCGJ2205433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e5447266af3a67f2bab3b7c6b42a637e85f20e611116eca6a4404bbb6122cc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USCGJ2205434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be975672497b60f9fa5e04a7e89f9cbae675427b1c6af8d1017440218f3f0e3. 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/USCGJ2205435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea1fc66801df93257bbec08dc22f9e5eef04788cd1ce974d56ec1e58df0954d. 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/USCGJ2205436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a6121f19378c14965e82b6dfb2cadcd6c8c4ebcbbb3c0cca665869ca9cd70. 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/USCGJ2205437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff48a5e7823068adea44e09e34436532d75e2a5ab9f553a0d0c6d2094423853. 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/QZPLS2008816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144a12f6e535cf2c7a29efb6c6ff794f2dcf3f695c4006e625f2cb5f746ed4ad. 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/QZPLS2008817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc922ca4bb22766359fe86dd091dd3dda02778e05a44c97085c89bd8c40fbc7. 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/QZPLS2008818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793de3d71c080a541b0de2ad760c9cf3cad858dc1e78a086a1804c015765c9d5. 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/QZPLS2008824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15c8a0abc5b3d499a663724f0de2a04415b729bb4407405f5f42d7c72df2597. 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/QZPLS2008827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149621c0b284a3b08a60bca6e228c12c84200e9e7627691c7931f74f341ac487. 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/QZHN61951644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52302105078b35048c591aee76ec21aae7ff7fc6daf996c9392abd70663565ae. 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/QZHN61951650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213f36f1e6822ad5a8ff2313c4214e7b23ec498232c8fd41df78950c1b8bb9ba. 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/USHM92280751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27acb703cf0f2be08a28d6f0ad6a13e00e0b6fbf170cc79917df7dcf1bc9db39. 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/GBKPL2296795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6687525dc69f8ad7e07f3b0698323d25f9a63c70334cd850a9f8cf7a57145b2f. 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/QM24S2106382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333598e6ef7a7505cc2b8b1203be85b7bfbfb1b7952efb3a7f1c8c9f6eaa07f4. 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/QZDA52096153.