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 0x21d41219022e7d1d9c3581a8038c47623c68ac172a9e68b96e2cc1d23548459f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5acd700a-1c2f-4b4f-9e62-f610647eddcf.json and https://artists.proofprofile.net/proofs/artist/5acd700a-1c2f-4b4f-9e62-f610647eddcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Estação do Gueto Lança: Periferia no Ar!
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 0xcf956a95d1f57b9cb0259994b0585de6f0426e8ca6607c5cbb710a36a40fbf5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXBQ31900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47fe3fd8dea0dbf7a24923a7cc4a3ebd40890d20cad2c9a3820980d047eb514. 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/BXBQ31900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0996426b17c57afb7429c7a1bbdbf9e346d2dcc8b8ee42375e34ec0d14a4bbcc. 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/BXBQ31900015.
Sementes Livres Hi-Fi Encontra Marietta Massarock
Sementes Livres Hi-Fi Encontra Likkle Jota, Monkey Jhayam e Ualê Figura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe390d75c131ee665a183e6aacf17c32a0df4a15b6dbd6fbe19db5cd5a07435f7. 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/BXBQ32200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88018c4192e54539f82c700c614f81fc233236af09f68e0ac865e5751e42cb28. 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/BXBQ32200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020bcd37a5cff70a3f2e1429bbbb70f28be5656e5f19feef372f72dc753c7e26. 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/BXBQ32200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e669a05eb4682a085be1250f15469feb5a2d36072316fb1110ffa15826a2e19. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BXBQ32200005.
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 0x6e8ef6fae99b9b4e02552231c72fe32b8877b6489a301ad2656a227ec6256f58. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXBQ32200006.
Riddims: Sementes Encontra Likkle, Monkey e Ualê
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67cf2c8d4e92669cd978c76da960c3405b3373a71fb250b45bc2e6efac484f. 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/BXBQ32200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc6ba5e72f78a521aa1a4b3246f50d6316a81a758cc38d0685df7c59a9ef145. 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/BXBQ32100003.
Sistah Chilli Encontra Sementes Livres Hi-Fi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b83ff9604cd6aab0917313d36df40ec0d8b1ac5d51e4aa90b6138b41d0aacd. 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/BXBQ32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cc983c4790772915185ad1a836d0588429a277a586d66a240ea843dcc16db3. 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/BXBQ32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fbc8b4e2b9e1fb7ec3ae5dfa1e258e81ef445a8db6938c1861fb8dacd89b76. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BXBQ32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d962768ec5ca80a553289cfda370cf2c0714dd6ca5a2b20804b60deb023717. 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/BXBQ32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65135b849f26c0ffa07375efe6cab942f330fffcecd3e5d0a32fe938f404c98. 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/BXBQ32400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8779269498b94183e2c44440e817669bf8deaf7c1ed43fa1845da41efc3699f. 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/BXBQ32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be83560771862f99e9a1a0ecda22478bdeef8ffe9111601c579861916ef26ea. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BXBQ32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ca1df6422a43ac2848b33571c29b39a2e27dbe166e0741aba9361cf9b58835. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXBQ32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a3e58795d2f6d7568374ee0d45d46162e4beef92bd7e7e2fe776168b1bf745. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BXBQ32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92a74e34334d7d6137e17a6280ea1175e539c665c8e7e1472f7a52c19d4861f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BXBQ32400010.