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 0x2d14b8554ec35c2d13c63cec2399930c0b1a87add4b54ac82d45ce0d0d448ceb. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37fd8334-92ce-4d13-94b7-6c2edf62c385.json and https://artists.proofprofile.net/proofs/artist/37fd8334-92ce-4d13-94b7-6c2edf62c385.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 0x5b990f38cc2333d274ec3758fbdd18e51aa3eb83d83f37a745cfe5486586a3fa. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BXACF1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e0bf0b0b62a53d9c8f01e4663fc728aae2f457b91aadefef3c5fb8a2ea9bfc. 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/BXACF1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c841d2bf05beaa5b1bd2d4d59e0e9e87203a39ac9a59998520ae5e68d754394. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/BXACF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6080b57015633917bceaeca099793364f847447bf6a738cb7bba24531b827f9c. 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/BXACF1500008.
A 300 KM por Hora - Um Tributo aos Autoramas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90398ac3aebc84eb161f072012e5038a999fe571d5f981549b1ef6717f869e24. 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/QZHZ42299547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f67532b645f71016d1a10cb82f01efd6544fb068d040cc3eeb5735565ecb37. 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/QZHZ42299548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35dfb8ccfa13961b3ee2852ff2da1e19f2652a2a802278566c63653a4c9587a. 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/BXACF2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bb30cd4cfdb2cf9be2826ab45ed86635867be0e9293b7edd188c0fa6becf3c. 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/BXACF2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909b7ee2a2b8ff6a7eece233f3f17de5fc269cffffabcea4985a7b7d3393c6aa. 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/BXACF2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11645878c892fbdcca842824d48223f5edc497aebd4859c38878340903767e0. 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/BXACF2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e97ea3f3535a804fbdae0cbe7c79c1d0cf53451e5293fef0150ba8e7bdc7fa. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZW9K2252641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cda1758e52fad46f6fcec81e1b4c41809c3dd326ece0a5c75c6c79825ef12e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZW9K2252646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303cfc843c7ecdcffd64f578287c01df1bc975473ace8935254cdec5868e0a6. 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/US7VG1444071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78835064434624e182b0c65fe964da724ec46f674f7282d0f9a867f0448029. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BXACF2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e27c7f9736c091accf229df3d7f865a5ecd53774be8422a2a32901b4d0cc733. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US7VG2450112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc61542a1717d60f14db5c4b148c064fe5262ed2a461bde0d65fa6f0bac650d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZ5AB1852923.