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 0xa5397f029b37980e578fed119f0ee844bd35d444d1509c4db77fd1cc95c69a4e. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a981979e-982f-4697-be6f-ed0e9919f27f.json and https://artists.proofprofile.net/proofs/artist/a981979e-982f-4697-be6f-ed0e9919f27f.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 0x6327a2d7a274ea81573bfd6ca73fb473365675fd1f8f23bda385d234f6cdfbf9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T22:56:06Z), 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/US7VG1731771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0c42aa30c8c18e6153f416e33a31ea39abd5ea261618859e25ea63e282417. 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/US7VG1731773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfac6779930c444391f9e42145559b00edfce2cfe3d902d582efda87bca1b2ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1731779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa93f27204297646f08479e528ba265625b460dc73bb5fb6d0a3373b0154686. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US7VG1731780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93692e747b063c16688a24e3ae5d0bbdf6321798c3c1767a5a70227904689bf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG1731781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169aae51a9dbf53aa8cf25151020e2ccd5f440192a5ec41fa8da97515020caff. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRTPA0600269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb529ae4fd5a9a05445ffa6d9f9991d86eae3ec7062eb30879b9b8174eb161222. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTPA0600275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb31d9799a201d6d33dc7c725d50d24b0f294c6ef294769967c123d2627cae81. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRTPA0600268.
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 0x6b001408437cdb3170e7eeb8368d3f28e63896202b8108c86c8d2e7e4c6f747a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRTPA0600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cdb0ab3785b59df8b8f560db774da5c309629989de6bede2464ee475bdff6. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BRTPA0600273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd727dc9cf69c1904bd33704dfe64b6abda8888af711ce616bb356500e85fd6dd. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BRTPA0600277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2bbd30d83be9890352db7bf18a4cf48ca6f5230dbd5297a8419df093efa220. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRTPA0300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f66cb51d3a137c4fcec933f733e8e870ab1555881ca94c3c1b0add48ed0a8d5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRTPA0300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedcc85d802e5ff65779463e01f75ddbae5adcce07a54476e9a5898d2a2f3980. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRTPA0300030.
Bairros Cidades Estrelas Constelações - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda38dedc4c2dc650d6ca859a350ae3be6245d62467a20a260838791de2746f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTPA0300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2d0ac1c6c4bb8ece6e3d7b576b5573650e3aa4c8f78f5acf2fa64d38080c1d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTPA0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb717a171ba78bfb78785f2321dc296ac9bdaf3040ced5b77bdf2c7510ca7cc56. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTPA0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998e54cd19f03018a96526dcede0c436d18c0613f81e56c0a18b6e9adde4a99. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BRTPA0300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10e99301c6a819ba9cddbaa2dccc8bb74a550342b326be64d200db140023fd9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRTPA0300037.