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 0xa42730e5114d33175bc03130204bd1868812263694c74ffe5eba6f67720bf946. 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/c4c6970f-5dca-4679-847d-cf7b8eeb8204.json and https://artists.proofprofile.net/proofs/artist/c4c6970f-5dca-4679-847d-cf7b8eeb8204.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 0xf08f9ddc325db034a8e0b6ad21da795abff7ab3c734d8306ce306028c1008c8e. 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/TCAEJ1963505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb33e9a1f7a021cf4d35a26f7da41dc6332ac3602dc5b97cab9972225395e686. 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/NLS6R1861283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db42a794ba10756edc3c3a5b8d3f9c840f1a46cb9409714831e0b72a430e148. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR7JB2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda368874da0baeaf4de68319aa63ca1b3ca581b4f201a1c1627a67f01172b51e. 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/FR7JB2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2d2db27d784e5f0b75fcf195292237039c1f8b16b4a3c31268c4aafb4d291. 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/FR7JB2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0bdb27fabc01b088a7872fae3627b915d00798659fd2cd2dbc0ce9bd9967b7. 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/FR7JB2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcc4d430208ebd7d2cd876eb0625038ea5ac9899bf75798deadafcc485df8f1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR7JB2201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad37bce836589bc85051f752abe227c987aae644032dbdcd7de1388f85e7e7e9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR7JB2201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a5a6ec6f2d12da2dd22bb54ca5f8a0c08a33452d4a27d37077fb664cd8e1ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:22:47Z), 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/FR7JB2201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7399399d3087c28484f6f8a7cdd079a8a703c2303089f6f289fe36953af57f83. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR7JB2201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483694a5565b94a3bb0775d2256f7dc876c4aed60ced0f471e430da1f526b8ca. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:51Z), 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/FR8FB2408700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c17b06018d131985f5289b2adbb797ed24592a17ed5ed000c956bf85ea5aeb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:02:35Z), 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/FR8FB2408720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7494200cbf4653350c99f37bac8318fdb761a560817653797f65de6cb43b1db1. 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/FR8FB2408730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8043640716abaf4ff0b9bf3be43c4ff5e0fee49dd3ece90a90cb2e489bb3f. 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/FR8FB2408740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429b43e319cff2dff1e43de566ccfe5aaf2217137ce5d3270475a2998922d866. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR7JB2300650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a511a476916e811e61ea299a4159e77eb48ececc643ea44d8d84db425de54e. 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/FR8FB2408710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13a251948eedd5d6f91c191ec45024cd1d40e25edb19b8142788f67305b5ce. 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/FR8FB2408742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773a9d7112752effcbc462f354b1a8083dff2b8ad8097ecb356c0596ebfdfdc4. 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/FR8FB2410410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13a398f1d4a2ad23872ac5a9eb30ae7a789132bef26e16d0c3879465d72bc76. 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/FR8FB2410460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a511a476916e811e61ea299a4159e77eb48ececc643ea44d8d84db425de54e. 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/FR8FB2408710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8945fe5cd49d6dcd907b63fc1f8185c1550f816287d7778b4bfb285678d9116c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR8FB2410430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed516a0031a1e073dab7119b9b5bd80056aa41a33636ada21462c4236d11244. 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/FR8FB2410440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d14c31831c3a61ff2f884c4cdb1a8a9959c4bae1fcb8588ac8d7f133dbdfeca. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FR8FB2410450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13a398f1d4a2ad23872ac5a9eb30ae7a789132bef26e16d0c3879465d72bc76. 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/FR8FB2410460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13a251948eedd5d6f91c191ec45024cd1d40e25edb19b8142788f67305b5ce. 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/FR8FB2408742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a6b701fac70a36d52ff0fbe5114e7c43a8efe9fdb557cb1bc6d9ab28161e2a. 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/FROU12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db1ad028ec274f0618fa9e5f6a806fc210cfeda396b8abf7c294a820e191aab. 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/FR0U11900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8a89e9205dde12e22ea41e2aa3f8b3d904fdb15bd6eeab8886edf795e804bb. 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/FR9W11812135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b753ffd68d5d56a52df6418ab8437ad557d412a4a69f11ec782d4bc7ded9fc4. 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/FRQ852100080.