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 0x8c6d020b4fc0ebe01e7c6de46c2790108cbca094cfb073224957094dd6481494. 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/e959c622-b1e7-45a2-9cf3-fba79580ba1a.json and https://artists.proofprofile.net/proofs/artist/e959c622-b1e7-45a2-9cf3-fba79580ba1a.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 0xaedc82f9a0551574c0a73a291cf487f162679b1c3f0280913a5db312af3c4312. 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/BRACT1603215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9039c5979858b6c1feeb06830517707a45b21136d6006f04864b9d1f8f142. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT1603385.
Pot-Pourri Mi Paraguay Querido: Mis Noches Sin Ti / Mi Dicha Lejana / Recuerdos de Ypacaraí / Índia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe172de72515b947239637bbd4dd2fe9e358950f8700bfe4c490d034eebe09. 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/BRACT1606336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb65ebd04599140e0ceb66aceb3caae6bdebd93552347052dc5da4b7861572e. 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/BRACT1606337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb251ee80203de113fbcf46ed93ce7b0a375b054e6e686ccf2f869889d462b2cf. 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/BRACT1606340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deb4a7d3946a66e23b702e8caf6c02e64ef5e5cb045fde4ae1578faf4dc7a40. 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/BRACT1606344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683ec9deb18f0804f266ff57063962d2d5306ee4ecd4d6b0ef6f09521eb7092. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRACT0500507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6ba5245ae188bf5486fd1d5adf1561a95024b8c83327d3da491cd545a496a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT0500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e7a0259a67c8d6d1c8118ad3556c10ea877c0e45e973510ad626be50c0f26. 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/BRACT0500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f9e168abe2b1e404a944953c5381d7c7121f85fdf0eb9bd43b02b46ef84f37. 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/BRACT0500525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8425b73ced82c00bde02dd838e780b59928037de5fac32ca06c1186b0c5fd9fc. 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/BRACT1607349.
Os Quatro Gaudérios (Chasque Aos Beatles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d02c4b6ff22f652d1e233231b56e287cefa2525060a78efeee4d643327b9f0. 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/BRACT1607355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e272f9d10bd669439f444d6370010d0504db5574cf77995ea7cce8c2bf0ff68. 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/BRACT1607357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6096e6c27c0f39855faf9d7c703596cdb32304b0a3e31a8b99c91987555de3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT1607358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba11771e2f35d98b05bc1b738ce30ef55a5f44fb301bd11cb9b96e04fa95b5ad. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRACT1606673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e487ca274cf85b680a8b3e5938ffb86fdc8d3a16981cf171b24c5761dce1f75. 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/BRACT1606680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9911be040c035e29f380286a22234250eb3c54279714ca73761a733a5de998. 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/BRACT1606681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f81ed063803a919a544b818de03120a9e64681978e3b6a43f970ea6f50bfa95. 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/BRACT1606684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59344f968c1c3279a5496405b7f6131c555abaaad697cdf87e016430fc67bef. 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/BRACT1603835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3432b0d908d29a7f11d6d58d81a1bd4755cc61965a1821833d233e8111fca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT1606506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2893556e7236bfe62703937f78d42a5d3dede106418c14a5956c59e76f07e3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRACT1606508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8267b0ad7f3e7a60a3216739f84146ce660253ef0fe6029afe6b34f05b66e14e. 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/BRACT1606512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5106154eee5176a92bd46e007be658d4482e30642a59bed818544ac6e342ee. 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/BRACT1604804.
Grandes Nomes Interpretam João Pantaleão Gonçalves Leite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc82ed0d62200a922729d0f7faae3372f091906157c9292c095a9ed2f3250e99. 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/BRACT1603531.