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 0x5449951ad280ca5dacae201a15ad1b8077b99f68203f0ba1769bbd86539d2825. 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/26f96401-5430-4056-a478-eb327cee0ead.json and https://artists.proofprofile.net/proofs/artist/26f96401-5430-4056-a478-eb327cee0ead.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 0x0b5c4fa687e638d665a047c2920b45d547576765dab42363fb5544929e5ad7d8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:38Z), 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/DGA0R2317197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fa4514f16903ef6d6b57691fa96970777e60f2878a608446539f81b2354b0b. 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/FR2X42498448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47ca130a71ba9799cbfeb2998cd5eea0d151d8c15ab5050a10fad9f4afb1c73. 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/DGA062429386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47ca130a71ba9799cbfeb2998cd5eea0d151d8c15ab5050a10fad9f4afb1c73. 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/DGA062429386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd78f8604fba7a6e61afa1ce81c24ef25b0e709050b66986305c4fe0687c74c. 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/DGA082419297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e19fdc6e22c6bda5fd84065720ef4e7032f62539f91bc866ec969b4d43e586. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:56Z), 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/DGA092429067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd685ed46d52ba547c4800d9ca08dce0e43ae45091b3993aefa886a2a72d754b4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DGA0L2454237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f65db949287b60b1c095fb9192cb1dde1736d6bae4f0a648a5bc063853712a. 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/UABM12500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1001645c4bd2a39de20da7baf9facbc8e52c8ad99b2eca18b64c34ec5aa82352. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UABM12500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb035b585cbbeedd0b33ae8f6e5ce818070bbabd02afd1d7a40f84e4611bfd17f. 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/UABM12500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7427777d82681a66f162dfbfc314d72ff2df7370184fd399a9cd51581e465709. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UABM12500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde821c74431cfd3ad458a962916ebbab48279db4079bafb61d5f9f62d067fd8c. 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/UABM12500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb214a21198c5dd37616fbba206f79d951f3b1436b639af6707fb70d70f0547d2. 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/UABM12500662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd1b16ebb53360ae4979b146f8b9214ce04e042dbd7cd47958cfd23a5853703. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/UABM12500663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ffd9e59bca6acd25fc451552239433b652fc5c156fd782744c4885cba4e53c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/UABM12500664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff1482b529696235b23324401244bf9cb0e699b32810839275291652e2b691. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UABM12500666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c32c287ca74c0b0dbf59b6ec33e3252675ea017756bf37a20042e5e2351c3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UABM12500667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7bfc8b046255019cf734af2a89a51a513770e21a7ff9d4487767cf7a45c961. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UABM12500669.