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 0x36180fc61a33615df9cb16d4c8abd5bb04d7f5815007dd4676bd52b10d6d3c22. 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/e807a595-4a17-41cc-b9d2-7130d06a4433.json and https://artists.proofprofile.net/proofs/artist/e807a595-4a17-41cc-b9d2-7130d06a4433.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 0x2552cfdb04470199a7e6dffed72ba45766ff36b773613d53078c549fea86739d. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM2PV1636269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d4a584394d02f740aa9a8003f4d3a8e92dfbd12cb9d80c7ab83c89ba1efabf. 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/FR2X41872228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6eea7c254b95f4ee4f8fb0bd0eb3a7ad4cb5dadb6636bed58e4b68bba1f7b. 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/CLLL21900555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289c37298c83cde6a26828d41ca3add5b919300669002bffed65ad0e6d96fb86. 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/CLLL22000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a69a22d29d604ea398681cd051e3ccbfa9decaa5d5b43c14a3dc3115774aa2f. 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/CLLL22000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb73bb621b651fff69c69384bee429dfa170b393eb1a861b179866845e77424. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CLLL22000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a6bd76b1dec284b1143329bd1ce8acde1c0bdeea1653156a7092b5f14c7fc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CLLL22000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f097b60f466b1ffd85126d5cf8cdfb0341e8980d73b800fa6c30e557825c49. 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/CLLL22000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467d5efec645cfd7c7d0c605973e410004bea57a128be138af82562ffc3c0e3. 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/CLLL22000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d189eaad20ce9cff977351ffc497e269d7fc06752082a5bb3cdac42d4e81312. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:55Z), 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/CLLL22000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a69a22d29d604ea398681cd051e3ccbfa9decaa5d5b43c14a3dc3115774aa2f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:09Z), 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/CLLL22000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb73bb621b651fff69c69384bee429dfa170b393eb1a861b179866845e77424. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CLLL22000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a6bd76b1dec284b1143329bd1ce8acde1c0bdeea1653156a7092b5f14c7fc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CLLL22000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f097b60f466b1ffd85126d5cf8cdfb0341e8980d73b800fa6c30e557825c49. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CLLL22000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb467d5efec645cfd7c7d0c605973e410004bea57a128be138af82562ffc3c0e3. 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/CLLL22000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d189eaad20ce9cff977351ffc497e269d7fc06752082a5bb3cdac42d4e81312. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/CLLL22000656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9b2b3ec9836cb0ea83b379b697443857588a66f3fe2c9c7752f6fd4b35136. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:56:57Z), 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/ES71G2063216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b19cade886d0ed65369179f41a58d7c2c1e8cdc493c1cd4cbf376e24716e4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CLLL22200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4460f76c3444c531e6cfdd7dae41e8146d6c0cc9a74110ef89d4a1a5bd51aa79. 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/QZHN82512752.