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 0x33000b1484f4944db3e11b68a85bff5108523e5d997000f7102c1040861d7c28. 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/8c5fa6e1-c0cb-457e-ace7-92ba13322a33.json and https://artists.proofprofile.net/proofs/artist/8c5fa6e1-c0cb-457e-ace7-92ba13322a33.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 0x057ff810cd24776344f34b408d9411463da3d3a2275e4fbd202875b1024fcd4e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG1629027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a8e81c94d518bd61b03b1e55adc169306e84b76f10cf1fedac70fd93cba456. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US7VG1629029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad1f7db72094363fce5fcec9b3cd4f8f17ba9749ab7e31edeaa53b34f74a4d6. 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/US7VG1629031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58165b9c8e15246bf6ff5bc5f8662b0a45ac92f88aedba35c5c45cf37bcbc088. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USHM91790882.
Luísa E Os Alquimistas No Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1019ef37d01a0c0597e0cdff79738c4b5ba7c2d8cf507769182e6ff79f15b5d5. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/BXULS1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b87c57967bd81446683e1cabcdf7640ac3c1cb5f4545842e44b863600f239b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BXULS1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdbe460004142b95a793110c238c4dbeb4cb7b9264dc171ae229d697dcea3bd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BXULS1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24262605c0bbda20be31bb19c92b20e865fcbde65e4139a532ccefe9e946135f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BXULS1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bff299fd03b9132b64890959514962ae0f893592f4a4341b431a3c2fddfb86b. 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/QZHZ32092500.
Brechó / Olhos de Tocha (Luana Flores Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbb14bc4c4350f90a60ecbff6cf880388277851ee97e8f203b703b549b1b467. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXULS2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e74cc8e5aa02391041e7d1be20ec00bdf956e404b80d3b389cc7adcdb049958. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGLS2189993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ba94a72802208feb16e8bf66380c2e3b8eaf0fdb24a645655d86d2ca06d729. 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/BXT8S2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563281c5dfd4e193e16a55e19b0fb887d4997219777dda700305157d5735ea1f. 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/BXT8S2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d812ba619d8765dbe52c0b981758ee34e302da3c20cc9b8d3df815cc55e618. 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/BCULS2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832b6736bd956ea3c8eec6334a58e31aa6dc2b8c4d8a41c7d5b6b6835120320. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:37:32Z), 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/BCULS2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917ef8d7dfa44c21bab8cac091197b32dd9f4ae721e20ef8089f6b621aec683. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCULS2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e987b8e750c6d1230c387693d6fc291c8c8f98bf603db6407a320a3e22db6f5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/BCULS2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430cccd0cceb2c9950e0bd2dde60e62f6b7ee4aaa0ffa478a84dd400724f9a5a. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/BCULS2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e289d4b09283bcb112de19d7dc383a1dacd978da673695244e4a7e559c139. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BCULS2200009.
Luísa e os Alquimistas: Especial São João
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b0167df1ef7c8c498e77ff5eb56afd826434ab7a19902843bf9306713378b2. 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/BX08N2300143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b00a4a4688782db77dba4af3866d7f86804586a54cbaa358c2ac9cdf1b4601. 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/BX7O92300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f68937721e158be5df30bdb4cfc4414733fc62193e3aaed6f6abf1e101651. 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/BCULS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca8cabe4bdb7b2b5cad665585d4768297106b2aa94bf1d0dd0a14f0e7ab7bb5. 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/BCULS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6f790e9c5611504b47ef60a5b9d6e5000ac76bd1950c5a37516b55517145d. 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/BCULS2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44940f31b729d954f63fe48dcd70cb4de97a9333407732fcc93f71154c0baec. 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/BCULS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f2a97f332a40dfa66e3ff50abf4183411e0d862d3c2b69a5542a0f3a69ed02. 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/BCULS2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f68937721e158be5df30bdb4cfc4414733fc62193e3aaed6f6abf1e101651. 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/BCULS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5415c5dc081d7cef8dc991f19864bab11f7ab9275c587762463ffb796192e89b. 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/BCULS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081700ced40c558818422dbdfa409603d52120e65046d8a5b43af97b8010c1f9. 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/BCULS2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60cdfd4752cfff849b70dd008110638609912715e1812764a5c54d60487e377. 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/BCULS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d0c2c6a9df211d55cb24c691a5d631f7aa4809fb85a40a2140657ff5768667. 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/BCULS2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211824b63ac06121ec7e1933b6263c1689613255c38a04bfd4ef8bb624325cf. 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/BCULS2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e1af0e6e1d3bbfdaf8c2b9994b2522852cfdc6162554264c6c16cba23fabe2. 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/BXM142300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7722058b510a207d38acd89123eb2294019a2cbf998b072cbc9512d765c77e39. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:58Z), 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/BXLM41800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6d42caf87b6c3af47d01e87b2ad943769d21f7ca8eb22828997ceb395c4ba. 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/BR6FF2000003.