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 0x67edfca4b3095e3f8222ef3298b4019886eb9ab35b5e084ce3cebf11608d64b4. 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/2f7f61bd-b169-40d6-ab05-bec926c6c93f.json and https://artists.proofprofile.net/proofs/artist/2f7f61bd-b169-40d6-ab05-bec926c6c93f.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 0x023643bc0b69a97fac4a6c94b601f880126b95abad2964fc87951a1750acf35e. 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/BRJPA2200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9155537128a1c04ccf6d0a5338f00102fd2195a2f7bdafe888ab9058016f7bf9. 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/BRJPA2200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2331871a154731075e0ba0f33d0d8ba14390797798240f41824771aea273997. 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/BRJPA2200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fee99dbcc662d06eaceebeaaeedd97197bb1180c06eeca24f786f0db3db047. 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/BRJPA2200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9996fbb8c3c9f45c60593b384e40698a3cfd1a3185a07b01e0276f91e4c3066. 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/BRJPA2200815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2c524a38f5fd8e9c33658746bb952f1452becc802be6a08b9347403ea30865. 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/BRJPA2200820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6596c4c54f88f6b0997ec3f016a899aeab0551ab8d40d3ab1778402704046805. 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/BRJPA2200822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c45775943ec52e8e10b1141a2931e61f7b1f9d5a3a5658ebfd2f59f61b4aa29. 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/BRJPA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759217269a4561f88a0872113ea2e3311defe6c0780e52b4b1560f8fe9262759. 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/BRJPA2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4e16ca2af4a58b545d63568724f7f6dc98bf6c8f32f9fdc6f7342c28443662. 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/BRJPA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1893c764548795b229f743456b169d3bc5cca788cea18175f1f92fcc53f39a6. 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/BRJPA2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2ae53b5eede326fc3579ab7720b7925cc61286824cfaedda2b004dbecda68e. 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/BRJPA2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36958dcfdcb271661944f3b709fcd278f431b7d3b75031b2d3745843591d05f. 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/BRJPA2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39147ab9b00b60a18bc93b4fc3b63c584e9e4bd876ebcc173ded377f7b8d68f9. 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/BRJPA2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0322c043001b5da86964f6de097fcce7239d7fcb16d04019c0e0ea20265014b. 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/BRJPA2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf0704c6f756391f5e8406c790e4a799032f9688c3bf770ec9852fbf1ec006. 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/BRJPA2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8c916d337a3cde0d70910037566966c2d9440dcb25d7f7fda00d4a9dbc0a8e. 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/BRJPA2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d1f5e076349294499f54309823dc121d9bb3c70d3cad79fe6b63312be81df. 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/BRJPA2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3babdbfcf18e6544089278b50a63a6d7a6c62f0f456afd0283d31f09803b17a8. 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/BRS351100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0f9bc52979e97f2cf6ed2187e02dfa26605de34ad7a1ad81a0075b6196fc88. 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/BRS351100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dbf2b0d40c14cbd5cae305fafeb068514888fc011306ac4ec4b5e3b35d92c1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BRS351100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dd163a3f945a4aafd9f1bb8d5ca4bdda6d86cd78c1572b062ffacb63732286. 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/BRS351100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd0afc66ddc3fd55848581a27c422658e38753cf0ef61ebdd7096c299ae62d5. 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/BRS351100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48cc470e5d47f414d395870014fe645fbc1444a7e54c65eb3c04d8a779cb0d. 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/BRS351100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6431388da0185286b54b023aa53f4ed85013e2b46a60a9edd071d18b4321e2. 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/US7VG1462460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc985195248c32457a64c38b97b588ff3c6eab52e87155f8fe94fcbf30652702d. 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/BRACT1601750.
Resposta da Adaga de Ésse - Eternamente Gildo de Freitas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81097f2a5663ed0441c95c72aea1d5474620811584c2ad4191938a91b4667276. 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/BRJPA2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478213b26e2b8a761026054cbf913100e5641c80b3019abcd8bff92c637f21f9. 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/BRJPA2400063.