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 0xc9faa07f800e02b55412486451d0fb00faf3bdbf10638463c4740658b7a46002. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aec15875-ac04-4d4d-b75b-010739db7a9b.json and https://artists.proofprofile.net/proofs/artist/aec15875-ac04-4d4d-b75b-010739db7a9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Espelho, espelho meu, existe alguém mais sentimental do que eu? (Deluxe)
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 0x9069a6a489afdbb036c71be9954a30601faa842bc296c37979ae10ec4a773f68. 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/BC2U62300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb177b830437d9a31ff0effc996153e9a874b4155e06ae9194775dabe90626. 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/BC2U62400005.
Espelho, espelho meu, existe alguém mais sentimental do que eu?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c1415a8e64a08097ec1819fdacf26782ff9a34d8a4e3dca490f24733116284. 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/BC2U62200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242679cd0973b7a8017cc69d43c025cfdd1fb9581fd44c158d6ee16d8a2db6ea. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BC2U62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c43bf0fe9756c08bae0ea0e2d2b8bf8ca39fcca24116b5c7dadaff33b8d29b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZHZ52054248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25eb709248a4c7690b3c5500af366a8f9e7e26f20615fa5c337ef71c6374305. 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/QZHZ52054249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf944500c266a70c939ba8b0cc9d356db021e1a2014b85bfc64753195d2e8eb2. 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/QZHZ52054250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9771276928b8b7ce2ced060d96782011eea8542ef6cf257e785ce6b079d14db. 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/QZHZ52054252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd319770f11482b4432525992e57d9b9e08cfcaa4a8e0ba96bd878d1370d53d98. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US7VG2068927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242679cd0973b7a8017cc69d43c025cfdd1fb9581fd44c158d6ee16d8a2db6ea. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BC2U62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e59fb1a22f6502327c594872117fdb7818a1a86a77e3d06d114490295ac999. 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/BX2GL2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9f4f4c1f11ea78c5794411422b35a2d9c624fb3ec29ae89b695a645bd3dd03. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZHZ52015967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa225788959f77d90ecc0196baea9b29655f89a2f2ac73007a5743b0d3936e. 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/QZHZ51974669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca458db9aeee76d3ea230356931a5c7d4c96994e27948f5744f54c79813797a3. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZGLM1958347.