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 0x23d1395c79b7b9efc082b61ccc80094868e85b6565634961a1dbfd42ec3ed5f2. 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/5202d7b8-3392-4ea0-ac0d-9aff5a21fbfc.json and https://artists.proofprofile.net/proofs/artist/5202d7b8-3392-4ea0-ac0d-9aff5a21fbfc.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 0x09224cccefbefa2940baf967fdcc7bd43e6a65b51416c2cc35d9c52f06ba3c12. 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/QM4TX2286747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b90b8f22720cf79d1cec7e18bd9d98c0810b7fa817996471133bd8408351eec. 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/DECE72402307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2665e43c2372cb7915ad00d1ff61904f20f9980f5d60c4fb9c45fe641d7244b2. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DECE72402309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17e7a3c22a1193a3e0544fa0e246b26047c9c79d87eb946da9399fa2908b21. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DECE72500326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17e7a3c22a1193a3e0544fa0e246b26047c9c79d87eb946da9399fa2908b21. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:43Z), 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/DECE72500326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888699a2270b99ee2853e8422110f24fa90c3e9983ae56c4f34e9cc98b3d86a1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DECE72501813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075a70078de52fdc99c3003e257bf7d6d5677dcc174331c13db4416cc5a33141. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:18Z), 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/DECE72501814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55434b8e29c291ba8f8646f89a8ab605002aadeaf236b3ba208e94f2470b17d. 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/DECE72501815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587d6ea11345d4b890538494d53ec4022d0b6827d6a27d504bdc3a3eb93a27fd. 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/DECE72501829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a91572ff52cfe5893132a900b1294d6f19a4c5906894f52cfd0c9929f25dde. 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/DECE72501830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24305c0bdb96d62e33cdc95b2b6af6b1f8e8d98907950357de1213b052ac9101. 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/DECE72501831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18114e2b02e731e5361ea459d4637b3e54b709a7ed7b2eac072338ee85f3cd46. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:50Z), 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/DECE72501832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c32f493b73c70c8dea718afced747a6ec79d7db7052fa581a062980b7341dcc. 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/DECE72501818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4609d84206602f87607c79f43ee92ac96bd81bf7f0b3c618a0561bf14195e170. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:46Z), 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/DECE72501819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b8d5f680bddc2d6fa5f5bfebdfcb591d62c547d000840432d060e7a2db1750. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DECE72501822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcfb45d2714bbb4595e2c9ea1f2c5a2d5890e91b1694577d09feb4038bc0889. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/DECE72501820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068981cc98acd24c56202465a690406da95ae360196067bf5dbbb3305ec846fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62278553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b0f89d02e6884a167c89aeda8a8f6b1c34f0f9fa860c076cefab33015c5e05. 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/QM6P42218968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09224cccefbefa2940baf967fdcc7bd43e6a65b51416c2cc35d9c52f06ba3c12. 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/QM4TX2286747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe4630799ee87b205567acc448d8e197b480d9eeb602fa116e1c4abbd932c76. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4TX2232639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0838279b99fcde2e9b36bf88aba1727a917d0d0a784d08bed7ea9e3a88c031. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TW2282613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b0f89d02e6884a167c89aeda8a8f6b1c34f0f9fa860c076cefab33015c5e05. 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/QM6P42218968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd173f15fc453e6800e5286d769fca0fe44909efd09633095e52697638c90a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DECE72300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02346d70991204b1b4d707b774023e70a19b17c6dc18b09ff5b8534cee7fd4c. 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/QMEU32206708.