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 0xb76547f5cfcec12970864a0d3ac962478ab7ec403fa253f3805861d147775f3d. 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/d627dc76-983b-40e3-82b5-811040603929.json and https://artists.proofprofile.net/proofs/artist/d627dc76-983b-40e3-82b5-811040603929.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Diário de Porto Alegre: A História Baguala e os Rumos do Gaúcho
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 0xd106a2aea5f49fbaf7bbad519cda3df4dbeeed87119b7a73f19ec8c85f9a06d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUSA0401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76d9bf86b4c3ecad5c112fe57c179d3d42c81f34650acba066cf76e1613a1b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRUSA0401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3cf07693e326905a019a99a5a4ed964a4b46ed3edcad2271c2fddaf7a46500. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:52:56Z), 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/BRUSA0401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee512988742a71230f3b3cbc94d186b6d398f67eb821a651adb43d477042cfc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:20Z), 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/BRUSA0401148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c23bdaff496e2fd47a6f0752243654fdbf2a2d8ec2f5e5381dfbc6b8020b04. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRUSA0300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce988fee04fa6059c1cfadcf6aa9ea93b84c7c024d77e838abc5ec47c377652. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRUSA0500832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeae82c8b8153ca3382a274a2d4688efe560499d6d5e86c58c9a9f0fff80bf61. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BRACT0900623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dffe913bf0168c6f89470e28abc83a1f5308873b6dc22d566818d32278facf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRACT0900625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe886351da81e054252e2740acac8ddad1c194bf5076028014e45f13da589d8d8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:25Z), 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/BRACT0900637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f70d90495360315fe3b94ad5e677fdcf2b2de230609169f3384ee9ba1b37b3. 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/BRACT1606914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e47fd0c20691e3d5f663e201d0a8efb0bbe73ca3032c1e0d8c0952b373d1f1. 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/BRACT1606917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fe9ae207674ad1d4c045e865efcfe4fcfc87708fc11ac04248c21a320cd007. 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/BRACT1606919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b6b2eb95b5c9280c2ded90980d8ee8b9fc974caa24531d67823a34722030f5. 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/BRACT1606921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69193cf6b257b2afccdc1cf15d8aac3264b9ddf76b6226b43452fb514905625. 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/BRACT1606922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc01f6bacfcb7108a6612762431ad298c770790cdf80f3b5a792c812a3279a2d. 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/BRACT1606923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83a171d316e68a5f428adf0dc6bf13f762e5418e15262f12c8aaffa171ca2cc. 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/BRACT1606924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020706e2ca4896c980bdac51e63d73324bf0e320bbc3d5c93b020a0942ee5f02. 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/BRACT1606926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498977fde9e7b613881de21e357cd3b007dcbfa326c7d5cb76c2a62c677cef95. 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/BRACT1606930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44233c64b34198bb7f5a0d6653bf6889701834487f9a9c2ba0fc080e3bda9df7. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BRACT1606918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adbb81177becf738c9b8bdff4978981cfce35f2971d2105caf8a4efac3be38a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:32:21Z), 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/BRTL21900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54aa950ab20401c02d2f9825d111d2e83f9b2b7acf861a8c51ecf6b3ff01b49. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRTL21900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106a2aea5f49fbaf7bbad519cda3df4dbeeed87119b7a73f19ec8c85f9a06d1. 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/BRUSA0401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76d9bf86b4c3ecad5c112fe57c179d3d42c81f34650acba066cf76e1613a1b. 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/BRUSA0401140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c23bdaff496e2fd47a6f0752243654fdbf2a2d8ec2f5e5381dfbc6b8020b04. 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/BRUSA0300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe7e07653411c9f23fe152fef80729d52405666d7f0bb1f8f9e804bdbb0870. 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/BRUSA0401150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685f61caf51f46f2d648c68709c678886b6cbcd252f3651dd41d84f4d8eccdd5. 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/BRUSA7800911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76243041dd6b70db56b54543f8b2b6bb55fe5cbe2aa62dae00f54b6207d52aa. 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/BRACT1605822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106a2aea5f49fbaf7bbad519cda3df4dbeeed87119b7a73f19ec8c85f9a06d1. 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/BRUSA0401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3432b0d908d29a7f11d6d58d81a1bd4755cc61965a1821833d233e8111fca. 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/BRACT1606506.