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 0x1cdcfe53d5a22c508a48abf54a9a92d5a76889e3fccad531f47bb189f2a63e97. 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/1fdf81ea-319c-4437-9f55-847ddb4cea44.json and https://artists.proofprofile.net/proofs/artist/1fdf81ea-319c-4437-9f55-847ddb4cea44.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 0xd52178d3799665d08a3c0d08d128b7f81af2b438a55c6bb57cba96ba951afa32. 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/LBA0H1700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46beace34dfc056d0fcc439e26ac2449cb127bbe39cd1cd2ae8414b49c8dbf85. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H2002673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd770eb4c756dea233cdbf543af36abd57fd9fe7ad2d6873c9f133f560d8a2466. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/LBA0H2002996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b2bc494f20409480009a25172cf80601f602c8a1e3c5da50b75935a8f6fde3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX762550699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b253cc5b0dfaf677ca09d7859fd9c75705c77051f7e4f886754d50f3624ff0d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/LBA0H2003895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7b899d2ba317410bfc1329c03e0c64b9426be8b62fec619d6907b4d6fd57ea. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRX872320342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6b86c8074339eb7cfaf0fddb79befc978e508cf7ed416b137b735aa011aa11. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R2352914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53072682599df4bf60a15f108cd3acf3d38d6b4849cd7347f786f0eaa72bbaf0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X2357987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49efc4c26e9f938dd03181541631840a9ca3b87985adeb7c0cf671a55c4d1a14. 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/FRX452379837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a3ecfb32b76be760e4043362e6b5f1b02028fa126acc2873a1a288ffc8de9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872321943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582559ba18672c07b2b4f4fa0bd334c303e6fe67f38acca7dc499ef31a282080. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0Q2370697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18325686a16d2dda3c3f1bbb1617ab55630d81ccbf78a4d9c69ebda5d6d2faa1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S2430202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f29b021483a66dbc708ec4e26158d174a74bdd1f570193a62183d93a7ded750. 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/QZZ662404222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148ae2589b8e5e0c5e0f55e031525bcbcdbe2f5bb4b541df22e6766e62fb1739. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:40Z), 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/FR59R2492452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2e243335bf4a0cc127125ffe561d050c53b056a3f52f293c7c1be5b7445d18. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FRX762465221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca87a6eb805779b0c703a8c3e737a386189270293dc708597d22f85eeea3a0f8. 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/DGA072456148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f1ab48e6286fe3cbb817d72067dbf0bf3a6433626e1f523e44886cff3f0924. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:01Z), 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/FR10S2593620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b5e9bf1aeec55041636056fcb64f4fdc3266e4bd54184cd8569d020e4b1a9d. 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/FR2X42567503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5ef0f3105fa552c2378af44bb77d508d4d801e27d15b041ff1a12617a232a. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/FR96X2554417.