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 0x7a9a14ab29aab3c6aa6a93455a585c098dfe87edab5cd5cd5672fdb0d3459434. 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/93631536-0f1e-4e2c-b4fe-4942e42a201f.json and https://artists.proofprofile.net/proofs/artist/93631536-0f1e-4e2c-b4fe-4942e42a201f.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 0xbbcdf504659a7b9c3490f3682d03dc35f79461b2338ba5792065fdeb20274b5f. 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/BRUSA0401946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb7a611c09fd248cf5016a8d94dc2c3f1831a6841320784f7b700f462592d8b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRUSA0401947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fa474a59dcce3fa537bb1623509841bb6777aa01ffc481eebbf4e8f3595b19. 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/BRUSA0401948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7880acd0702ea9204f46785aca3204c9c8f597c275b06c14ae6fccd6ba53fea5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRUSA0401949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ce8aed8e54cade06de5bbfbe39218ebdb0be79d7e48677077140d502a0af38. 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/BRUSA0401950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a2acbe1f364309f3d24be748e0a44f589aa54e2b749c6497d34c67ca45877. 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/BRUSA0401952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2d1c995b1cec83b74eda30728f73b311ad73339805101817dfaf88398f8f8. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/BRUSA0401953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a58abf709468317e9efc1a0490cefa36499fe26ed72d1115f6983dba2643a2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BRUSA0401954.
As Mais Belas Canções de Natal (Instrumental)
Clássicos Gaúchos ao Violão, Vol. 2 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a050e1838cd3e6e10dfeff21b8ff2aae395d2d5a0ac6359ad52ba8cb2e31df6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRUSA0500410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383e0fd1b99e89c0d19f278a273a23e7d1e8e1ef4624cc7f6d8c1cbe220d5cf. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/BRUSA0500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69192cd8efd266783e7d7b376a9b9b5b2512f8d4bfc68f09df349d0216178d2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/BRUSA0500418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f528f2ca1fa7d5ebba063abbfd0af1a65b4ffa6634f695366bd6414160e7a8. 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/BRUSA0500419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5827c6894460d58039b2a25d635cf62569939924b7297b627f97fa1147d25eaa. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRUSA0500422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e581599881dee82d711b7b4ab076cf1e89be1084610e55f0815898cb52e54ac. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BRUSA0500423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3fe061045b36ee894e56d0a5c5af424548944f352600ffd77855f62471eacd. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/BRUSA0500425.
Clássicos Gaúchos ao Violão, Vol. 3 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0cb67460cee91f8ad83b748a252870b9d0dd7c2bc0b0d1147bf08890a4b2f8. 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/BRUSA7800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f080d146c9a103d9e90890f856bb141b84f93b2e9b459516ea049f1ac47d473. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BRUSA0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e548733cc39dc120520c370a731f59adbd6a664f596a774465c0895e0e44acb. 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/BRUSA0300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af270041b4c82904e9c0f7c69f99dab59d11ac5f2498c7a2adb26b95dd4b38. 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/BRUSA7800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0cb67460cee91f8ad83b748a252870b9d0dd7c2bc0b0d1147bf08890a4b2f8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRUSA7800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd283ef3df98121b3eeca0445b5c7845aaa9a6577dbe00f5edaa5f284f0288c58. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BRUSA0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcdae3d2e0f188f0ffff92c27c64680153b12156510a6e8fa8d0ee03451c489. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/BRUSA7700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1621783281e30e25d116850aefc49cdcae5b2e75d24982ec2dada7e6385d3f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BRUSA0300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c8782d1220eca815c148a84728412d15630af0f45645a04ba8e88627a154d7. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/BRUSA0300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596243dc5ae7c3b8ee083154b340c2120ab2ad06275401faf9b522fe6f7f7df2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/BRUSA0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e992042027a2c82ce7e134e970569132a30f02dbbfe72077e99b2e71eef92f. 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/BKI6N2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83406d39b5dde6baf9ae24b771bd139cf49864e15113af382892f4b67dcb6a23. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BKI6N2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc66ff0d1ee9f398a65e3ce8b54bee0076fe8957778664c07a2724d232e49dfa. 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/QZW9N2262743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac93a08b4ed5a645da474ff94127ab2ce3f8a544c274fe5f4682a1082fad885c. 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/BRUSA0300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63675343a55d646de80fda08d6aab7ee2854b11aae78d959d7c0f274083f456d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRACT1300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982279897df11afc5596d00e573beebb1e478bf39f0685b7a0bf5f4dbcc95494. 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/BRACT0500135.
Medley: Preciso Te Encontrar / Frente a Frente - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b40977a2637de76411addb27bf83ded24a1f8d9de1aa142b009e71c8fd4c45. 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/BRACT0500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f0813fc340a7459c9e6bd3137467a43831164b907a4964f7feebbc38f5bb3. 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/BRACT0500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc09177babaab7f69d3e88526a8a967d272ef748fe95719fd54731024ef4e37. 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/BKOGP2300001.