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 0xbc87b1feab4532082cea5e27f031bd0fe7932dcfdf3ee5ad282f806ee5728ce8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70cf310b-0546-4335-82a8-c4befb9b7a4e.json and https://artists.proofprofile.net/proofs/artist/70cf310b-0546-4335-82a8-c4befb9b7a4e.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 0x6cd49b185959258ac49aa48022d0078882f95ff93ae2ab1c11e2def3729fafa6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX3Q92121812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f09a59249886d31777330879dce38f8761d2458e26fede912bfd8a13d89f93d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZMEN2241722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d95c20cd254c02fac408d5b4d6c2127129b6a77b01842e081bb064599ed39. 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/QZMEN2241362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a9b6f3d5d29ea5a478c8b7763fd7225a29be2e708c533ea36f3335b147a101. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZMEM2239688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b952fd840f16ce62ef021b346d0c88cc911dc096d323d01ef0c490d087ddc14. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWU2217792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ae3e3aaaf88b273b4929a90d66a2150f2bb6c81bce14673384d1d78c91c04. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZTAX2245330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d784096ff902f4d66d5202a3ada5918c2e6a4af9370462ea50d80ec75ff1d8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:05Z), 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/QZTBA2255941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5122fc450c50cec8ed3306a72a8eb7849c38e20a54f28a0d0548254399264. 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/QZMEP2390795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e65dab4b9c87db87620de68646efb982d49f1cabb013e5b2fa8cf97d588e9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWS2342990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3bbe699c0d5827c7ad1886ec70b6a44153211fdcc4f3afc9e7b07c44abf0e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWS2342992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36784d6a2c35bef590c51017dffd23dfc55f26694a9fcbabc2654353ef65d43b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWS2342993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b3aeff74be6206483c5171a64e59072630ba803d255d8cebc973d266bb633c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:28Z), 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/QZRP52333660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985a80ef1dbd229730b5b7bf17282c68a7e5560eb6a39c8da09aa279d2ce6b6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFJ2379716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc241e3dc4c468c17ec2760197a703dcd40295de9ea56e412e4b03779f30dea. 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/QZMEM2481890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a55311f92d071ff2552499497a675ddd3cf2ef7c38623c30413062a756bbede. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:04Z), 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/QZNWT2486905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ec869322738815a0847cc304e41149ba2eebcedd79236984ea2639dd8f2104. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAY2447933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb79bb22192e8a8bd4fe2665364041f380836081a2030e32450467c2c64137f8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTB72456475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d65fa60336cdc2f1b7b0d85a2bf9fc7fff9e4cca0eb613126f1f94edd1d9a9f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTBD2485915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1939390bba6d43d0975411b83f311ebd9b9d36ad097cb583899c872c115273ae. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:38Z), 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/QZWFL2448951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343b0e19f669c2b677810a862c5a5cc982b7f5c83d44ebd40657a7ab01ecf17. 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/QZWFK2578299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1b5d404066d47e71c22cec817b212f127d7a0ec83d3482f7780433b63e9d82. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFX2523628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb9b9631c7518da4cb5e1c35b9f257b94d12d3ce6447e859b5cdb75b85999bd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZZ792520229.