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 0x5e987e9c06663aaed1a80077bd38ccfd10d374916be4cde9212e8466f194ed16. 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/dc09dde3-d050-4ecf-88f8-8987bd10fe56.json and https://artists.proofprofile.net/proofs/artist/dc09dde3-d050-4ecf-88f8-8987bd10fe56.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 0x8df6321a610b7f4f2b92121a6e4342092dff4ce119ae0fe793954278e4e5ec6f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRUM70600982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9ffbd9e8b217ac271659694f1624402acbebcf0489fb5ef65fa07a43171bc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRUM70600983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800647e6fabdecbc7612d6c381feb53f14acf4307d20d984a131886c0bb0a778. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRUM70600984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b102265ff46f489ac850ffd3461f884f5dcd9bfac25b390f3ba171b1d8fde5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/BRUM70600950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6584cf986f0ceab21515852cfc5380c2a75465b2ae08d3a91c1e43198c14fc. 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/NLA509508701.
Lágrima do Sul (Teardrop From the South)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01990d1556b50d437e5a5d24420e64c08235b922ce13b521cbebb833e091eea. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NLA509508702.
Xentitemento mu puli (My Little Birds in Foreign Lands)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d26005d2cf5d68358ae918dd9828433555018142c3b324509d328a1915c99. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NLA509508703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcd47d48ef02bb3e8f369c98408aa59350f40ee32de4dc26337c2042649f51f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USUM70835740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982a14acb4b1e69ca21babaf8c8312329cceb93e1eac356b42d9b7b58614399d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USUM70835758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ee52267b08f312df15245c9eb3e3c126ab90ac9e4ec28605dd271edbc6af2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USUM70835760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae6aaeeb618179f068e76a896cc4606d73874a0b25805921063bbe260cc92c3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USUM70835752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1360121c9832514144cd204622c7df801333b15fb8b833bc344ca966a2a9cfaa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:57:26Z), 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/USUM70835757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ea26236c82130de3db53a2718208ff7c7a1238bc7a9a3953c5deb8d3e3ad36. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USUM70835754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0de0805fb36ada28af5029e8312ff431b62b1bd67174205b32ca82f435b122. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:30:36Z), 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/USUM70835753.
Sideshow Freaks (feat. UAKTI) (feat. UAKTI)
Rio 2 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32609f8e35fbf9161378ccac87be6e2091f1b9c685d762c46845c7e33c5cd769. 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/USSM11401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd692969e2b3e7d79ac19300395697ba0c44225f7fe0579b31721d01429df1c6a. 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/NLA509806002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5a2184626cedf7a07acd5e09801a4b7b5b910768dd293e7c10e0bdce18b7ba. 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/BRQQI1500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fd1db960495bfb13a4b3ad3067156d3ddea6188e4970f37a1c9fa8ca5fa41. 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/US65R0502108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde659027af9e75ac74d3c03c330ddcb06055c659d80d859263795ef3f5e84f6b. 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/BRSME9800314.
Dança Sinfônica (Trilha Sonora Original do Espetáculo do Grupo Corpo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0704673b8b0b19c864ca4427ffce67ada593fc854fbd653e79e91386f80d763d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BRCP41500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf4768dba16900a7c95981729575266afe645f6627c760679d0f15c837420b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:29:44Z), 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/BRCP41500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb393a97e39abc7743641f5c7e4c3032c86295955eaa1ee0b7742f110d04c3. 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/BRCP41500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b534bfdadd5b85a2b704669f23f8a819e857adc7a1de51d6d8a32100cb84b7e. 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/BRCP41500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40406a512d67a3054f261b89f45165599c1ceec8a8c457a43769b90cd30485a3. 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/BRCP41500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68c8027365e9e0b5b1fd7ac5b3aa747cac60ca766e724075f703a77a5c8178. 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/BRCP41500007.