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 0xc0ecc4feda464dde76d3314475a93b9fdc89964a4d8789158f58fb433315a8f3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4109bb4-f20b-43ec-81b7-bd18362f78c3.json and https://artists.proofprofile.net/proofs/artist/b4109bb4-f20b-43ec-81b7-bd18362f78c3.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 0x56183143aa88f6b134bc338e53c8526671f71be0500f7af14296c8a48d375fc3. 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/PTCN10400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9c0fd730a73b1d2f591a9d708a6bd0f9966d458499fabae84c6fdd5b582042. 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/PTCN10400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcf4deb832d3c7e9c9156ac490b3788ae2eea67d6bf1477ea7d60c5c5e4e4d4. 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/PTLR11200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f0ef683f2a53d7f1acd1be1ff6f293481bd0b2fbb391cd3d21892a89aa8579. 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/PTLR11200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccde6344b64b17741c97d1d7a8166711029164fb5bd97c48b39dac9ec709ca36. 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/PTLR11200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66065c0d2fc47ce3d3162d7bc0fbbe0e38b2f0d938f4db2aed43ec8c32de2c9a. 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/PTLR11200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb9671c18982cca798d2d6fbf043c21790f741d5b686e849e622804475e895. 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/PTLR11200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dedbec08d5f3a067095838eeb92a4711b71e812d9cd8683df27ad219f8296f9. 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/PTLR11200006.
Como te quis e te quero (How I Wanted You and Want You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74566ca20a5819051987347cd4b2a7a821c681ff8e494d92580e616ebc528ec6. 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/PTLR11200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e660e7fc96c76226780f48af5104b8399c88f05f0c347dd1a2932c52542cf47. 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/PTLR11200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc836f002402d6a1cde50cc026e5980f36b7629efd38004db601a33395817cf53. 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/PTLR11200009.
Desde ontem que te nao vejo (I Have Not Seen You Since Yesterday)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d00449929c80938056a3cfab00b8f11aac42ca44b1157aedac63511963249b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PTLR11200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da6df3c9b690f7c4200763d3fafca52ca5fb0389a5c7a358f5431e69aeaa93a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PTLR11200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc68209f52a166f437267342a9b48101da742ceb20ab0bd49e728a9e1d0eeca. 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/PTLR11200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374b67d61a491f328c2fe6e1b25fa7fa77d395b9777334728fed2664a8beacad. 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/PTLR11200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ac9794891bcb9f4019922e9c18ac9948730a2ef6251459d3a60fb2f4fc7a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PTLR11200014.
As palavras que eu procuro (The Words I Search)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20378558b67bde9f5be1883d4950199a96a897bb5ecd2741b99a560df24dc9. 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/PTLR11200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b779220e282a1e60123331141ed643f3e92f2498d40ca92a3862155b893c2. 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/GBCKG0701842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8484d71da19fc6ee2e686db506d7bc6c75d91009ffa7990c1e4c13bbfd84a74. 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/FR59R2032092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f61dc963c6f146e5502a786817a5a285e1592190c6e2aa04e157746fd9cda. 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/PT2EO0500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52527d95826eba70fcd3f9f20a0d39794c8cfbb1a75d6028a5bf02c302161046. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PTCN19400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b582e725bc00f3ae11a816a79d6cdeaca50d3c5c381a0289bdaac5d47163373. 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/QM4TW2093537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb5e87aa473a3726a264d06d1032612a6b892689ceda5ed6db69bfe477d8c16. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TW2093543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0563804d84cf5d51f44dee210edb9c021eead7a9bf27527911b2e0b2b08de3fa. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QM4TW2093535.
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 0xc9ba63f68b1b7a9fd500cb9b4cd295e781fd958fc34743fdd03e1754bca87ced. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM4TW2093536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e3bd3fadbf1dd33655b77cd1ac4cfb04eaedd0e368f46c7740a07099caae6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM4TW2093539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0802cea9a8bd91df7d7bfa95728fb289165513a2204d46fa03062db1eb4228e0. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM4TW2093541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428afeba0e4f671822757485605ed83e625a8c651e9687fbca6f1a883622c804. 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/PTCN10700262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d07468d09782bfff9375360e2fa36954557d0b9d2d39567b3223137bfffbc3. 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/PTCN10700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab13ab1933bb5a027c0ba09a907f6201f756cdb14768acddacd5cd70a6de01. 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/PTCN10700266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96ef195b1c64f6bc4f5ed8319f538620f46f3ce01cd196731c3abc8ebdc4063. 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/PTCN10700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d658e65fe57565b494ff34886d4aa80572deebcc59ef2c2f9d8172e37d8c445. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/PTCN10700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207ef10f9643218d0d1e661b71b156c853d158b65615248ed238ba9f7fee2aa6. 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/PTCN10700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52527d95826eba70fcd3f9f20a0d39794c8cfbb1a75d6028a5bf02c302161046. 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/PTCN19400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df679c682d151f73609fd7627661a5fca7db0c9c3f44b048da6e2c5ca32909. 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/PTCN19400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c98fe7b9dd5f63b640b2258a569d9d0e2be68938898fcaa15ece7259426eeef. 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/PTCN19400116.
A Canção de Portugal - O Fado (Fado`s Amor)
A Canção de Portugal - O Fado (Fado'S Sentimentos)