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 0x8d37f8defea65d1eecbde74013296ae3f05d66f633c64570d74bf760e8429a49. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/257d6d66-ef89-42c9-9878-6e61354146b6.json and https://artists.proofprofile.net/proofs/artist/257d6d66-ef89-42c9-9878-6e61354146b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
25 Sucessos: Choros e Chorinhos Cavaquinho de Ouro
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 0xc9e232da279c36ba4a49ce711b4b78de6f0391fb009b672b58ba6be52e498714. 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/BRBGC0400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d82070d18561ad6a077ded88e4241f5471f49608c2bfd0b6baf342ea452cfb. 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/BRBGC0600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea77bf1646e8dd7132ceef6d2b257d28799474ab4ae6e1a2441d22d1790ab3d. 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/BRBGC0400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11742f48d0b9417a5d616e65deafc935b72f448d1ede378df5f35b5f147ef907. 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/BRBGC0600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5e241c701600123dc2c7fb0343db023bc3c9d6b978c480cab29304a0655b5c. 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/BRBGC0400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff21984e9729ee708230c1b6073291227a28de5c4af498d1cf4052fe20b0bd2e. 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/BRBGC0400722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbe186fda19db1ee0ba0985bdd1b135dbdf3f07c02a09d4308a3daaf0955c9. 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/BRBGC0400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb9fbed71c0334560084217418ef6a0a967f36d3db4b8c5a7a3bd57d5727999. 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/BRBGC0600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b7cae072616570a563731fc3517fefe57bd1bbdbe935055b71bd11f43427c. 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/BRBGC0400713.
Pot-Pourri: Dadá Dá o Tom / Urubu Malandro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16994342b6ff696572f9b60c724eda7824a618f6d2bf8372ad86df8c20c01790. 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/BRBGC0601317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1216e29412ee8d92c8cfad1fd4b7de40340d9a7bc4508fd6e0f175628911a1. 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/BRBGC0600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d18ca8c2fbaf4ea5790bc454ad9a4e6cbcd8ee0088a36b51da9b2dc00f9df. 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/BRBGC0400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7601dd7c10bacd9747e95bbe6cb173f605b97d50d4161011cce01d662a41588. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRBGC0601348.
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 0x175f63f2cf114e5158619dba89f7f36497789e310d5acb6ff7b7efd536d4a62f. 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/BRBGC0601349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62b54b330ae7bc6362b0ee3b40e7080fb5c049f65b6f0f20c487babf271e357. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRBGC0601351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd222f94d9016435d670ec632744b7744a7506b2e07c6818dacf0f2d164da64. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRBGC0601353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc156acfbe301e2e393e95ce7f6ff01cc04a27cf9c3d963f1adfc7ed9427c8f7. 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/BR19C1301951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c07f52819068c985b4b4cae30c96a478c8dd3d23d0bb7c80ea6ddc45fdb427. 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/BR19C1301952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91df7e7a812641ab5d340710cd6c52667d8a58ea5d5ffe334735f6428939e757. 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/BR19C1301954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58718865d5c52257644d9e3e0f047b0b6cfd20ab8056bedf149a6313cba63894. 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/BR19C1301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc195202e49b2b32112e90e39e0d81cad7b4bbee259a2fff1860acd7387575692. 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/BR19C1301957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2089125c5d1ef3bc05b127cc1f83ded82d3a5e4795827322d99660f75976fa. 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/BR19C1301960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2674928a0048e287e153de0fb0118bca4d6ad00d3966ff4bdd9294d73e58551. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BR19C1301950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5a483149d7483c7171c47dc82581a0300e915074d4842985cf3a27dc20544. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BR19C1301956.