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 0xd0cf2c02726ade23de2064d59eea05aa1dc55aa964c5475a4af677a0104fb3e0. 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/de92daba-f644-41cd-ab56-6fdc53b59264.json and https://artists.proofprofile.net/proofs/artist/de92daba-f644-41cd-ab56-6fdc53b59264.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 0x019ef592344984dd45e457e0c8433cce1e94d9c613482e5e8e96d2e9ac8af085. 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/BKCMX2400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a3e02a243719fb892396d7759bddea2e01fce4dc150b49e1621a839eae1400. 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/BKP8K2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1556d2bbb7c96d1f0979edbe6e058afdb5ae19316103581a0361b000a1896413. 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/BKP8K2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ae923d9b352ddc807bbc3d1868e3ac9146220e6f2b7b61375fca0270aa48aa. 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/BKP8K2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba7ef97f973b8ff5ec6d509b90c3c405203348e836d29ef181ed877a95ef221. 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/BKP8K2500005.
Ela Quer os Amigos da Firma (feat. DJ GB DA DISNEY & MC GL)
Bonde do Sete (feat. Tiél, MC GL & Pior Versão de Mim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aecb12b32e38dedf234ab2cd4bcd9950a9405b0b6eb1c397f8b6f545ef3c96a. 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/BCPAK2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5108a5e0457fd164449a238f1a1b36e58566027cae8e1217cb7113e02cb50a6b. 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/BX6IP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a761b563874194151cc312d7f02e9f7c402697058d9b5e3164a9704acde7fb. 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/BKA822300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd85a985a4ee3833bd98fc5a5bb7220dd7f5f21babfcd3f8a074d20f05ce49. 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/BKA822300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6924a18e189fcb9f6ebe7f819b912fcf9499a3359223eacf46fd1a9f576790e. 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/BKA822300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664e5f60e12ed86ed0f00594c6dbfaf9a2e13e71d8f615c2fa90f79a4b1e9b2b. 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/BXP9D2200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6828a6090ee6625cdc4bfb0fedd2e7dd1279db297c9037b3fb2f0fa57fab1a. 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/BKP8K2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad6fc3786190c190364f9f600069c111477291fff4e3a6b4dbbd22d841a78bd. 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/BC3JU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7a339412a269fcb285e6be2892fc6e67779ed716477db702fc85b053aa9c55. 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/BCA5Z2000008.