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 0x5dc9681d5e91e427c07e118e818a18ec101e339c638d5a9c8658c89875951e13. 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/2a3d0c0d-e29b-4634-beca-4aa401b6e9e3.json and https://artists.proofprofile.net/proofs/artist/2a3d0c0d-e29b-4634-beca-4aa401b6e9e3.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 0xa0030e21f9dbfca854a0d59c5232956ac846499d98150427115d68be15fc27b6. 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/AUMEV2451476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0236632f22bca318c2922011e0db8cba680cbb8a418eb027743f15046c831db4. 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/AUGBT2361572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22497679cd07644dec3b6cf1b6ab3a9316a591edc1edbac35bf53ea90f135173. 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/AUGBT2361873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4563d5279a2934ce1279dfd1271d9d13e9898a87771c456490fa9e102877dc. 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/AUGBT2361569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddec627aeaa0332ed18325fc130598fe4585dc6008dfb115628cdbf83f764507. 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/AUGBT2361934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f3e5aa103313c423ebef9f2a9150347d0bcfec0dc1772a0c2e333163860d3. 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/QM3DF2202430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc5c6459280013af554737fe14dd1a39fa0589b2bd9283353292af41596969f. 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/QM3DF2151567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45117d4d8910661557324e12c4b090593001658630c68329e35cc156d3604d22. 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/US3DF2172746.
BONDE DO MADRUGADÃO - CONEXÃO - IPATINGA - FABRI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1d9c120cf8efec7b50fcbff1a526cf6af651bf3272aa4781b91eaa2cbdc32. 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/US3DF2163568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151a86dae20bedb8977dd30d097e0b4b6b0d85b05132180371d6a86d1485b2e8. 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/US3DF2129237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0359be821a6e4392a226bd5f9803a767dcd36aee486fd75f564cceba0cf51. 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/US3DF2128383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d43b880a345e45561f7cb96daa06acfd0cdfe3fab77a1c451a5d167db12cd39. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/US3DF2129235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a9d61fc589e742f302021134b62c9feed5488f4d1d4ec9dae114c1f0122bf. 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/US3DF2129236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772896e3639423884d816b2f0bc54ffaafb95a32473bad03329edcc036ca77bf. 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/AUGBT2430769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0722cc9ca362670d09f39476bc6caa3cf0d0b6faac93451ec40d51857e07f33d. 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/AUGBT2361439.