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 0x1d0bf829ddcffa00e0d7b8f971a66bfcab6a15db4ae603a5014b926a9ab49b28. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53ae7a32-26d5-4b16-8566-344a3aa9354e.json and https://artists.proofprofile.net/proofs/artist/53ae7a32-26d5-4b16-8566-344a3aa9354e.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 0x496ff23692e891d5a14bf18a3b32e8fd890b227750318ab9222e3420ff2b5497. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMDA62291273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601b508dc7a9ad2ba999ac3c346ea737e9ba0bca5a1b2649c529420b860b13df. 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/BXMKG2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf704fde6b4bb54c9e693e335fb25c24654ab59557f624c024f332abe5aa0944a. 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/QMFME2312237.
Preciso Dar Um Tempo / Maravilha - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b44171172ef12c68359189ddf9af8b09979c51566e580806cbeeb04d0957cf. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:01Z), 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/BK4GG2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95f44b63de189273c1ae09b9611ec51462c131d5177b4294e1241eef9fbd97. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BK4GG2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc402742a93bf5212c824bb59ce269f7c8ef8bd68c9a46180c96656526fe70. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BK4GG2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604e452fc0ab78df08df22398d7a624725ee9683dfeed6516fbf7c282544aeff. 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/BK4GG2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd097eafd6c54a0d62e30dcd2cdbf05b57457c4986f79527d79ecec584eba0d99. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:24Z), 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/BK4GG2500019.
Gostoso Sentimento / O Cheiro da Maçã (Ao Vivo)
Preciso Dar Um Tempo / Maravilha (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134a72e85acc71c94ace234e11a2f40e4eaad26790c56e392320e677de8b5d1e. 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/BXLVT2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134a72e85acc71c94ace234e11a2f40e4eaad26790c56e392320e677de8b5d1e. 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/BXLVT2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ab7deb6694da218edb5fb3b703ed9125787f05c562ccad5aee38db478d097. 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/BRSME2400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ab7deb6694da218edb5fb3b703ed9125787f05c562ccad5aee38db478d097. 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/BRSME2400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ab7deb6694da218edb5fb3b703ed9125787f05c562ccad5aee38db478d097. 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/BRSME2400996.