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 0xb0fb83b7cecaaba86c2a50946adff927f7947d496c2c27150b950fcb2ec8e8b7. 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/5e79261b-6051-45c6-b145-fc5737b2eed1.json and https://artists.proofprofile.net/proofs/artist/5e79261b-6051-45c6-b145-fc5737b2eed1.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 0xbc6fe0013fbe2cb37c18f7ba91aed5fc1fd449b2a3eaa74f3f9ae7013c75efb2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BC3PG2402987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19d681e2249b6d09de2a80dd3965c966ec40b7932638c5e172eb82a03cfc317. 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/BC3PG2404585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2aae8bb04d6be1476ce0f46ad5261abdd3e9c601b81069bd6361e34129012b. 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/BC3PG2402982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a6d2f0d5ce6df5ba79a22df995c55ac0b2e01739c6280424326b67f975e3eb. 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/BCUWS2490330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf18a81c7f59d63d876baaf2493e5c28754e046b8b0cf34b19d32ad38ea669c0. 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/BC3PG2501978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037aecd09d995e3fea0aef5a7b46088324cadfe1836a93ba089cc9c7b9d51399. 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/BC3PG2501111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a169c0ce4ff975778d38aabb48eb5debef0f08283dfd99ad0159690fc07673. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BC3PG2501122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec93a903b585409c3f168fe461810ec7365d207155f148e536683993081fe0. 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/BC3PG2404590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664b4a008a974e02d4419422521d2e6b8dd6e551120a9c8e7836fb0ee35a139. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/BC3PG2404587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bc31d58864375a199628c4f3ae1a7307c1c70527814483670ac1be538ef946. 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/BC3PG2403887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45117501cddb8de7d55fd24aa4f2666b3ccb730dfa786bb802d0bdc39fd0c5df. 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/BXAXX2400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac1febe9cf8595f6bbf75f56bacd854030c53a2edb3a1de7b698ec536dee349. 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/BC3PG2403730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3887b2fe318cddae3bf778a50746731987b8d7430856e216f3480863fd743e2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BC3PG2403729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821e3189c0aedc9fa2323596fbee8a25833050be5fff282f9779a6d2119d9555. 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/BC3PG2402985.
Muita Droga Nesse Baile - Bota na Tcheca da Karen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48815cbf6435ed5092f99418a925f17f2da1fa93cd0af9d7cdc524cc3f5c07ac. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BC3PG2402420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93002e5afbd07beefd929a19542da2b10c37d2080be6c261c102c2fa3dab850b. 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/BC3PG2402418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec329a62b571c00b5b5779c041a89025996d897bad17feb05ebe38922138414b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BC3PG2402417.
Ai Ai Novinha Profissional _ Senta Relaxa (Slowed + Reverb)
Toma Ninfeta (feat. Dj chiquete & DJ Alisson Santos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef88e1ada275bb2a8c130ea4e860651b6babf7a7e85c9509153417c0771019f. 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/BCJT12400001.