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 0xcea565b0dd76af6b1fe0b25a1991b9c0ab8889bb79f750bf9f8d3610f28b3be7. 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/2a88ad3a-868e-4add-8143-f8b23e8703ef.json and https://artists.proofprofile.net/proofs/artist/2a88ad3a-868e-4add-8143-f8b23e8703ef.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 0x7c2f1cb5a60c2358d9e305500f09bf93f98eea2ce405b0dd901058b3db19eac2. 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/BRQ4H1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56763dee3f6cae58dda9e3285cfecf4fdf503777c52cedde8d03bad4c6b149c5. 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/BRQ4H1800008.
TUDUBOM SESSIONS 4 - CANTO DA SEREIA / JAMAIS SERÃO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edccde4f88c29cdff1c930239d2e14196084d51f014429ff5fef175554d413b. 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/BXD2J2200001.
TUDUBOM SESSIONS 3 - SE ELA SOUBESSE / MELHOR AGORA / SRTA SEXO & AFINS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e52dff39b23e8040adb2c6f23f5ec4b44b8622a22f2a66c7fb657e0e205c5e8. 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/BXD2J2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bbaa48ecd5627970a508dac6ebb980ddeed8ec3fc81512f6feec89f64f6d07. 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/BXD2J2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94480d574f9488e36227ab391c3f091f2f5384df15484484c717110d69342f21. 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/BRQ4H2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e508b6f794fd3119e3a58fb493f620f248cdeb6aa75e27892c966be27d441. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRQ4H2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83141d4e046382a8497239635c5fa7de9a77fc2390dc91f5075f84ec5bde9f4f. 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/BRQ4H2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdafd25c02e9550fd328b12866769582c4f6c30667b6f0536cf1641478818d02. 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/BRQ4H2223826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13948a5b0699aca4b48f808aa79e0dbbdb3c9f9fc2c90dce85c34c8c04cc923. 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/BRQ4H2223827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63fd64cb86d4bfe1ca5a487f4e4ca6b06194d5ce76d451f95404b7fff73b0df. 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/BRQ4H2223828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e45f0349c121840f072c551e354009f6b77f04005038c362fea80d585979f0f. 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/BRQ4H2223829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80fca049a2b67954987284660e744fd05ef9f5bfbd7e1fc85fdd73886b02be3. 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/BRQ4H2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13664dcf60b533a2f4d9b995e1715d409f43589757895f3c3a30307846b57272. 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/BRQ4H2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44d06fde84b8dbb4f29bb212b9a2e507c67a676c61553ae845d3fe566c0d5e. 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/BRQ4H2223830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae335482352ee32ffc4ecaf14cef348a6767c775ef162998da5a27809c90ca24. 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/BRQ4H2223831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500aba842dbaea896c5f6d93295dfaf4c71a024e5038bfb35938fb8537b625c3. 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/BRQ4H2223832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c749ed42798afe7c55980544e9710e2c048cbcaa2394808032caa24f4cdd4. 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/BRQ4H2223833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755229c367f07b7298aec675489680ac3152002134809b76a16f595982d6918a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BCERH2300003.
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