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 0xc7cc6097c80f70725a527d4fdcdf75e00d60611c66c8dc020608e4ebdf1fb666. 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/5c7ccf57-4d89-46ec-a766-1fe08411d0f5.json and https://artists.proofprofile.net/proofs/artist/5c7ccf57-4d89-46ec-a766-1fe08411d0f5.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 0xb55f7d7e7ce9cd14dc2856f362e642a72d6f7c7e6294e241a5a2fb2425d71065. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/AUW631100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47218644b35cabbc3a925b93f245088458474897fb8ddf34be043c69ac213c2. 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/AUW631100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d42d5922b35f82b55b1990b6be591b774e9e791a20bb26f41c63008948553f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:17:03Z), 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/AUW631100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dfe69c0b7d90446d342e4e8d4b4fc08802f4bc966a69d6ab1e86cf80db5a60. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:47:05Z), 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/AUW631100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cd3922a16cf3ec23ebd55c8bbf6495da48a5829989fc199c8e8baf2a3f385b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUW631100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba795a6155e7711e8096b97e2f0b4c548b9dfd3743d8da5351b0a4415eddc1ef. 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/AUW631100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34c58dec40d4d397316c9d6974e40f0a2ad8d00064ae146e77ecd67d1a4aa8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AUW631100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89323cf44e21ce362f254779f457ef6493de8af40b8a55539fed58fa64bf328. 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/AUW631100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeab4582fe15ee4f0e959795c1bcf55bf4af9dc4053d8359b92953745069f2c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUW631100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd5ee87a22b4b48e07396e4c184ab9cae5cbe6b74fa6500688138f3643e2b8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/AUW631101043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ca8e4c07bcb1b52c3ee218151ff12395f022c07f305c0f583800258303d4b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CH6541835536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd056879a6f4634a71374ca867813a48f2ddf33af1e968cadc8bcb2d9bd05b6b. 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/AUZEM1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c6429dd502976112353b1f15150655f5cc96f66c8e8d118647760b4ef36e03. 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/AUZEM1800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98363c3ffadb4d318345325a55391e631f6d2afb6c2d52ccdd587d82457988be. 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/QZZ662407421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba468454cd816323ec91c7c7a671fd67dbcc8ee7b69f5540e76c647ba02c4cb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ662407422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78908b394dd08aef4970db49af14d65e953ddba5cb0d17f0f427950fe03a5f99. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZZ662407423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bafe855709b1a6767b922de9493a341acbc50c906b7b86bbbc4f2283c17708d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:55:16Z), 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/QZZ662407424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d07c4e7199b7a7b042bc4825c1ef707a6cc009bb2c5b4cf043948232593397a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZZ662407425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845edeb9573d9ae19e808b27b419d66dc73c2c8ef18a9abdaf37fac766bc01f1. 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/QZZ662407427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04540e195392ac9a112580cabc82052d84ecc58b57ce8102cd3f4c6433acbee5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:57Z), 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/QZZ662407428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b088fe3f84c9caf8aa7b45dee5d4d277700a9a2f30d01f426df7432b3cf6f09. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ662407429.