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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf560b10f86d3dd9764fd9bd9d837f43dc4d83ef09d191ab6dddd98fa1e1850b4. 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/2d050061-5b15-4438-9c3e-523762d1998d.json and https://artists.proofprofile.net/proofs/artist/2d050061-5b15-4438-9c3e-523762d1998d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04fe76b95ad6a868cf0c15aa795f4286d14cb0c33df770bbfc53013430fa14d. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/BRMAX2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609518f3c186e7f413104202522ac8705d6a84950392f134be7b780567fe271d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/US3DF2014453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0952bdf4295a59adfdb75c2013029708a4bc98337c424cad30008c8fd87f7034. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USANG2071674.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff7d8e57d3793e6914ec1825b8a521eef333cbda0a5cc029f874117d7d32273. 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/USANG2071512.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7715d70ed67a58e00a0c06441d2ab922d5bf2855f72e9f859c4d403dec4ac941. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USANG2071521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a618a677690a60e905d649cda0b7dfa86f4ff0018e8371d98f937657d203f4d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USANG2071550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0531391073e78c258e40e1e13d6c232031c708bd1000110f7958a89f065cd8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2071625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140acb7ff771403ec7536593496bea9229c07ea9f6d5c8e82e10524bc29f3c20. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USANG2071627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652ee26f628dfaa68082efda152c46d789872130478bb022a5c6cffb50046a6b. 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/USANG2071631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f29d5759a1a7d5f4cb59e25d0e89f8b7f1250f180c75fd3f2fc08780952c3f. 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/USANG2071643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19c5b68c657b068db9a7468fa6c9d45c5d0d43496da9ad68572abdba5db7804. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/US3DF2003425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d6f67c1e7f05114905d6700fcbf13c91b52ee803c7f8460e1b8aab5b518c35. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USANG2101530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2ebe2d545d73ab6eb8533e62a27a9b73b6f0a159aaabe1455302fc53ca85b8. 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/USANG2101562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5d13ac15780b3bb19614fed3d40e805dfc5e0439064d9cef60cd9536c9507d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USANG2101612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56bc83703fe89ad4184004a076dd6161c11727fda6dbfa584794e9fee9b27d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USANG2101625.
Sucessos Inesquecíveis na Botecaria (Ao Vivo)