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 0x1ca0f5b60e0ba9b9eeefe02533b7272dae53256e93bd76fb01386c1acd98aa80. 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/451cce37-245d-4f2f-a309-2a4583bca996.json and https://artists.proofprofile.net/proofs/artist/451cce37-245d-4f2f-a309-2a4583bca996.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
São Mateus pra Vida: Do Barraco pro Mundo
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 0x8009b830b1a4486fb689f1d82880616f38d0a14aa90f0a0a2d8a9217030fdd2b. 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/QZHZ32116553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd5c9f9c15aeb45bbfe32e9d4b453c597923d5e6077d8e8e19bf18b70622cb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHZ32116555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214ff3217e80511a50c542f924caba80c59afdee5ca18946577a50d522c971f8. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHZ32116558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f794c6a30a7dc2d7b1e1e904bd838955e2ea61468b5fab48c5d3ac61bc1cab. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHZ32116557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3aa7a59600c98e380d605f720e32e7e3fe790318fef3a31b4566d5b34025ea5. 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/QZHZ32116554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fe3443221d7f7b60673d01d73f4fe76040dc87a8971e49d3bdf274f4a49faf. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/BR03D1800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8444b20a3684ee981f43742ffd2e17debe9e14ad9707ff342b9ec9d8c0b1d9. 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/BR03D1800575.
A Guerra Só Acaba Quando o Último de Nós Cair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6994dc9c7563787798b2bef632463d3cf4f997ad7ebea24331adb9e5701059d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:10Z), 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/QZHZ32117025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f9f52e3d66685908689a8670e27aee1964228cbb4e0c18d58d14796c01d3ed. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:47Z), 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/QZHZ32117027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87953ab94116a2c8aaf55c1f7a1a0c7be79abf1ff9081f2c55b02261af7d5d04. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:58Z), 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/QZHZ32117029.
A Todos da Várzea 2 (Super Copa Zona Leste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56316041a526d702bae8740a8bf6cb5d4bf202ae8de7374e3830168d6f5a7f9. 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/BK5192400005.