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 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 0x0f5eb9866c98804bee1a7dec8cfee175ae90c8992fee9c16af856419e79674d8. 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/7bded40b-6015-413c-9c48-b61ec7944395.json and https://artists.proofprofile.net/proofs/artist/7bded40b-6015-413c-9c48-b61ec7944395.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 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 0x6bb9acea30d846c2f5ec9057614b5c8cea528961d6b6d77b9feb69972f383efe. 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/QZHZ52223804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1698d36c58a24fcab313e81de0a5c3e893ff33b83c1bfec9ebebb6ceedf0524a. 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/BCNWM2400142.
Nós Tá Lazer & Papo de Melhoria - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5d74b8b610c0d1ae9387a41eab17b29ed4385eb337f06bbe369246bf323b21. 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/QZNJZ2385665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cda76066f2e8f06f43e098d5463abbb49a961f35325e6b1961fa1e37a268049. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNJZ2385666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad7970b1ed643f0f8fc7f61044a911f656e8509d21342fcca4deadf13a9470d. 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/QZNJZ2385667.
Alvará & Solta os Pitbull Todinho - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358851a21856f77719fe568ced5353d4e1d111553f31dc4b6e9f6cb528722d56. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNJZ2385668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdb3745733bdfef3955f3f2bf21a187599c8be382f340fad50f78df509bed61. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNJZ2385669.
Piranha Vai, Pisca a Xereca & Dancinha da Glock - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf8a32b291c7ea1622a14b3f7801bcb365c63985ebce6142c475453962bc4c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZNJZ2385670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24840a36b279ef5b0658e10e00a160c894e7ebd803562867f71c88785c146176. 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/QZNJZ2385671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df4266156b89db733586e5e1d5289385d1e8cee8872ae8f7ad5d86cd128f16f. 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/QZHN92111546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398506d025923157ee8e5fbc68f5fe92723e7817fafca2a701841568d56d2783. 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/QZHN92111548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6167209d18dca7601fdeebd94d83a4f6933029fc89a795304338d1d9e6fb1145. 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/QZHN92111550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5e390c1ba1f21425c6c93619b93e5968054b04aa1c82e65079cca3946ab0c2. 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/QZHN92111551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef388e5c6052799e32681b07ba7e296956d24a43c468bfe6939f87a7815c20d. 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/QZHN92111552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16083b45526ed0ab82bbc34d6cfcd55f5acd9743c48f934bef97691b3f3af09. 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/QZHN92111553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13c9c15822a21e1b80448f8bd9660081fce71b3bcf2a2d555dfab7e2708950d. 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/QZHN92111554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4239ee232d20f04cd6458c39e3e77f0de31c73d7fb004ab66e7be13f863bf608. 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/BX6DE2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46b9d1c0030644b8a2c12bc1c171280851aba7bc0ce70595a1866f552c3a982. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZNJY2304770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbca8abfc1b2daf9a5ab540f0596709fd3633b3a123500648879823c1c4b221c. 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/QZNJX2364792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0661ec84185bcd8b6bbacece10de2f854fee3ac60d31d7420280225d30a6484. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZW9N2258831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a109f7ce37dcd9817233676f01b68d17c8d9948ebf33ec190cfbf4bcb6da4. 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/QZNJZ2204651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0804f14cf23a98af844073949a5b1bf87c795d5d0b3750d9d2722dc07ed9bc. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZNJY2128915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5212769a949731eca95fafe7c0076847d03fd73d09e5247b200ed0ffb4b064. 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/QZNJY2013200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b1ccba22c9212914c3fa0a053aa94c5ef62ef71992505f83d8c0ea6f136c70. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZMZ92065323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd2aa0111ad9cca151ff97bd398f2f534f00e1a01ef0f6eba3c9255279ed7a8. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZMZ92025142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cb913adf3fbc29308262e2c745e1ee56a98e22459440b0b64cf73ea3ca1254. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHZ52084391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf710dd6068c47d4af9a0c2548c563f37cbfa8032c9521361830cff71972f7161. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZGLS2007536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb24cba38adc945d86a31ef0a617da82bbfb565f2de0643fdb0bdd2ff1bfdeb. 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/QZHZ52048318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7c26aa832c89c3d816487dee60e35623d3998fa81c579edeace863976fade. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDA52113587.