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 0xc3d35c3cb3f5e8adec72c3f2b7bde53b53b276ba87a3ecd0a0c62be186777130. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b385a8f0-16bd-4235-806a-e175eb06476d.json and https://artists.proofprofile.net/proofs/artist/b385a8f0-16bd-4235-806a-e175eb06476d.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 0x4ed205b05f2ae22933e9f379c508fa7700833a4f433ab59fbe486b39d4ff11fd. 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/BRAPI0603217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdf55030229788282ef95773d8c8d6bb5b633974634fe02db5d3ae60f4b5f98. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:16:57Z), 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/BRAPI0800539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63cbf7631cd33c84f61aa6f04f4475cf21ca7a96da3da0ad5b07c10a5ef6d9a. 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/BRAPI0800542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8fa30c4481985572ea75a85cdfcae2d6e39b11e60ea93500f6b0a120b7c949. 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/BRAPI0800543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11331c16052bc55cb91e95e69ab5ac9a5d8b70e2d482da9c5091567134d1463. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRAPI0800548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6de778758e99f1e32c3abcb6bb5e0d6d84263cfd4937206ce0b4cac3a40277. 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/BRWMB0000731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db14c506d6dbd19cec1d4191dfa1a38495ab7af40ee90ba0e46a189fcf1642b. 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/BRAPI0400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819fcf65b28c50041df2b98b0c49f7068a6473cc5d93a4ddd096671381f27fc8. 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/BRAPI0701311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358ac703044763483868788b506484cfb3b9617e9c397a9643d4623bededb9c8. 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/BRAPI1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e84807480621fe82233523ed9cb966cfd2df5bb40dee1496cf5728d0a34618a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRAPI0702105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ffc7b3fe60c0d2f357ab54f6dae8f9e1c52d60f074427c9a055df2345a17f2. 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/USA371001941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d0982a7a01993f5eee8e2c04bc2de0c6ae50624fba186a98104234438f9fe6. 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/USA371001943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f35085b2701666c587e02bc027065a2c51e277e72b3b552123041279491e22. 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/BRAPI0900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058c64047b5af01a9095407e3113fc0fda8cbd4acf2bec90eef306e1b0021d9f. 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/BRAPI0201000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1677d059798887c2bd17f8d3545b6e106003ec6ac1ba3f19a5fa4c83ba52dc39. 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/BRAPI0400582.
Rumo a Balada Sertaneja - Pra Incendiar O Bailão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f270895288060a2a1c023f6cc3c3b2423ff874f14c331d266ad9fc16917ad99. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRAPI0800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be823db14b0117f580053a293bb81d29ddab15cb6f9b0b78193bc26b6e3218e. 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/BRAPI0701393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239e9a4f2ef3ca48bb37292f1168cbbb1743d777c96fd6e8f5a5d8756b5add3e. 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/BRAPI0603410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d1828558c82020618c00ef01dccebcf8feac50f799975864a57aaa36ee41d8. 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/BRAPI0601584.