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 0xa53b4c0844c6877d33a311d7e6afbb63a79a9404b2827e46f4085ffdd7b59bc7. 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/7ff27e4a-3655-4947-8959-46c44bad727f.json and https://artists.proofprofile.net/proofs/artist/7ff27e4a-3655-4947-8959-46c44bad727f.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 0x6caad800c04f9ddf7dc44cf4e8663b94b49ab7e809235e7c72ad99955b78576b. 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/BR73M1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9664bb804ee8f2e3fe184627f5d0a3e207a509b8c7f7414d8a835532b9bb61. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BR73M1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc67a3ece36ca797130ec758d5f2de2377b52f0557ddaaa1757f94455403843. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BR73M1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9664bb804ee8f2e3fe184627f5d0a3e207a509b8c7f7414d8a835532b9bb61. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BR73M1700013.
Eu Sonhei Que Tu Estavas Tão Linda (Trilha Sonora: Éramos Seis)
Eu Sonhei Que Tu Estavas Tão Linda - Trilha Sonora: Éramos Seis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29858974acf5a8925fef22ad64e1c22a9202a3182f1792dfacd3962a737a6ba1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BR73M1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0b4d34b291f991b849577cb1d32dc64b8d667f2b896034d7b269431add4f4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BR73M2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69452645e5b3736ca6c28f03cb528b85ff16ff752b8a8c6dafc507f2a98569b9. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/BR73M2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ae61d1ba3087dec94e1c33639bd5b3ac1ed18ed3e9075708964f5cec7d7cf8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BR73M2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ae61d1ba3087dec94e1c33639bd5b3ac1ed18ed3e9075708964f5cec7d7cf8. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/BR73M2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69452645e5b3736ca6c28f03cb528b85ff16ff752b8a8c6dafc507f2a98569b9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BR73M2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0b4d34b291f991b849577cb1d32dc64b8d667f2b896034d7b269431add4f4. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BR73M2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bedc0031239f1c20ab3fe98a1a10ea71a2ec6c8d0845ce5bf2b651cf50503d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BR73M2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b86110b03649725f230a98ff861cf6661e7efebb8b09a55040fc6115bd7165. 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/BXRUS2300010.
Tigresa - Ao Vivo no Coala Festival 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a634d3473659463e464000ff283530155282a874529685e040637bc44a20ae. 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/BXKBP2300045.
A Sky Like I've Never Seen (From the Amazon Original Movie "Wildcat")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe407282268d8a52ad278e4834c6711d15d7fd3b71a0cb1315f338218c5eee787. 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/TCAGO2273889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd098133fb3706aeb3302953f4d1226e914b4bc46d3dfc50f00a9eaa17a1db100. 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/BRUM72100903.
Final de Tarde - Ao Vivo no Coala Festival 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa47be46b5121ab5378338acba8db7525ca93a8d6be5cb7cf3c38e12d5403dd1. 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/BCNMM2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d53778c8ae2f232dad773404b7f10e2124ac52b3d1b35d2d922aa9e21d6179. 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/BRRGE2400185.
Saudade Dos Aviões Da Panair (Conversando No Bar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cb828fb08c538cf8bb5045a76614aa220ceaa0539b48084f768db79dcfbcb6. 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/USC4R2442826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552a2652343bab3bc33164361a033acbd0257415050713be7af99124f88a60a5. 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/BRPUI2000241.
30° Prêmio da Música - Homenageada Alcione (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae491f536c0dd1ba5eeedee5b8a53856ef16e50281e7af0bad9b4abc80c0f52f. 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/BRPUI2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd098133fb3706aeb3302953f4d1226e914b4bc46d3dfc50f00a9eaa17a1db100. 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/BRUM72100903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bc22b8b8d27729ef3f40f999dfef43cc21a3a38379e86955ca6b7a79f988cb. 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/BX2DO1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c698f6c4b1daed7ee5a6a43c5c9d853c1fae14b90848e056591b6f4acf944ba. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BCMP22000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6525ca0db4b3df3b825e475c508330d8487a1f2da348a5abd3a7d9d40b2ce9. 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/BCMP22000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cce2f8f4425ecda1869cc0d4f8ef103deca3cfb4c2bb0a18828114717feb86. 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/BRH5U1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95601ca13a2b2022fb5eb4e55d24187316ec12b93810d14992c841604dd9628f. 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/USNO12400523.