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 0xd48ef8ba1e257e17e0c3416e5ba6b3e4bb844c72acb1403779ecdf231cb451ce. 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/694d08e8-8cb7-4070-8d57-413ee7a577b4.json and https://artists.proofprofile.net/proofs/artist/694d08e8-8cb7-4070-8d57-413ee7a577b4.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 0x1196a84eb483133371f2d301b95dfb5ad6544a2533d6d9dce7e5e674684a41ca. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:16Z), 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/USA371457949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb2ab694184a578d418bf5226e67f7dd508b32c55b48a5690bfffce51ef6856. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA371455491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd9fd9c376e6f521ffd1da662f3bc721e44917c864f251de7a6ca7321509f3e. 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/USA371457041.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21380091bb8061bfbc9686ca4d14849f36a9f9d08cb6cba1107968eb02993848. 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/USV291463969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538468342f9a730780ed5ccc1c03888e55792193c15c7094a1debf7cb92e9b3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USV291463972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8673f886901aeb0abe094a853910b91c4d1eb08abf7a11f9e175ec5c99e281ec. 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/USV291464002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd17e3d759505933456669c618a47bdc3378f1cf6b50c23accb0ed5d354c2a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QM6N22090816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f293ed91b1766c19a4d4768611a9a8df610f27aea074e5b429d623bd0d9218. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:06:56Z), 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/QM6N22090817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9b38458d1f7e33b4154d6ec6b8f59ce89801b1c9f7e228a68cf2661d71645a. 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/QM6N22090818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8349d4ffd7f3ebf1f0dd4350b818d52b8dd3f5a8a14a6f5262b35ce5ac5778c0. 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/QM6N22090584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10d0ab69ac16827ea3cfc44468d10220914e3e83d029f2d77e59d18cdb0eed6. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:08Z), 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/QM6N22090585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b01a08243c8c7955254286afae86027c91c10db05a38d746682ac169498745. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6N22090586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eee1bf7fb760abaa56e107181037c575497ef5bef51c03a1db74f068c365050. 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/QM6N22090855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591c82d2c8f7954d0b530b96198e8b8d57bf1dc03035d2fc8a6bdf853f8b9a30. 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/QM6N22090876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa4c5ed6726af9437dacb2739babd283c70ff0f034bbadefcfcafafb4a3c02b. 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/QM6N22090877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b0865e46a4976b58f2f0de45d39129118d0cbba4818e0ed7d0455c6e451d66. 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/QM6N22090878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614646a3b6af87fb9547d4f9057a3eca52b119b3ee731d512c7f460c877bcc63. 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/QM6N22090887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8928ac09e5371f4c22a5a5deb46fe9430ecd5177e4460b6bf0b092c0ad2c55. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:47Z), 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/QM6N22090930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c728ca67e2d4551f6a68a958e542fc395bd693fe97f84d7e24dd85ce49909. 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/QM6N22090833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715dc5be4a9807aa39d57be6cf1dfa135698577a6f8b16c0897d767470eeef04. 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/QM6N22090838.