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 0xb1b582b96147809c7ed95a6d160f5b9d163dcf31cb402cc08b41550004f5a964. 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/d1785004-26d9-4cae-b1f7-29e28ac7d28d.json and https://artists.proofprofile.net/proofs/artist/d1785004-26d9-4cae-b1f7-29e28ac7d28d.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 0xa7b995ab6a98f1805c24aed2c6feec05c539617b09fae76c07bf7fb98fce673c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:34Z), 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/TCADH1733362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993dfaebc27aab5d8756fcffd842ae2da1cbc0a814734eaf8682a5faa6156aba. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCADH1733368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75094df3d3f5ff6414fe36a0a62e4d85de254cba07eb8db053ca37634538d73. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCADC1756516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b5596f28dc64a7aa909b84c1efa7f7fbdb662b456327f8f71f2ef6c84ef39. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCADF1757964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfe4daaeb0c49cfc6f9c558518372c6542f3e3cf547178e843bfa649ceb19ee. 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/TCAEM1944605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf248dec340b24d7ce634d2d6d58bf3eefc8b04e85456ac1d3e504e84289cff40. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAEN1948713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c97817639921ad3ab58f03a0099f05dfe058464d817b22d16ff794116c7b3. 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/TCAEY2037903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12f838cd380fac0f423785f2962ab33e0b11905310d8dfcbb533ce5b7717ca2. 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/SE5752070451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8555351d554502ee00e352b321358598aabe7d3d4e3dba0d20f92d2e24f1d324. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SE6A92022697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ca9cb5b9d39977008fb804fde3e3a39856b2346952bf4e0dbbba466ec4754. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6XY2113738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52666000706ff1778ebf2e8e1ca7d5be4e02ad95dbb493d042908907b6642863. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE62M2160125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda59b6d6f2a382ad9074ea215a31c358601ba60e20f032b8b5baae735bc523df. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:59:34Z), 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/SE62M2160131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe5152993da75dee3d91613d24909f22d7da79c81ed1c2127ee9dc65d372d1. 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/SE62M2160137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ff271c273b53ada8376979736b0b4de2932908fb77c681951de6f96d4cd1f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/SE6SA2233115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076a53d1a9f64a664aea4d0c3c79a49bd9f5c834da59e7568dcfc27f9510178b. 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/SE6XW2234144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cb1cb0824f5a216638571d1c5a8d80e6137f88b501cca5fe09f994e9cdad6b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMER2207987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9535264e6102c95c95ac960333d6a4721f84bd6f887d6b69302c5b8adfa5cb4f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SE6HN2376786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05c5c373e6ecf190cbd75e1be753b5057b11bbd533c2247c8cd87fc25470950. 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/SE6SA2400332.