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 0x51ba931e325b736b6970d99402cb51f35f1d155fdc666d6ccdf11fcc90090ad5. 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/a795eba4-1d36-458e-a78d-b3bd75235ee0.json and https://artists.proofprofile.net/proofs/artist/a795eba4-1d36-458e-a78d-b3bd75235ee0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gata, Onde É Que Cê Tá? (Versão Acústica)
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 0xeb6bc24ad6ee77284a165afcadca1ad547abe5758d0d1f0059ccba9584d85772. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USCGH1828148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac500ffafda85a011740c9a529b80c3edc71d073c3560dfdd10c4a1ffd706c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USDY41808490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f4f754640556c483e478a8d266921b9c58fb8c0eb1d22fee4722647c70a4d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USDY41808390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636cc32011a049b5a7890e4fba7054048b8bf7f27d5ecf9bc374d4ac4321bfb4. 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/USL4R1814107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9645b95d4bf5743c828f3ae35cd390ffcbba99efa1479d266f6fe513cb0451. 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/USL4R1814108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317cd4367610d912166046284a5c428d30e3391f9e4248f63fdf2f82764de3d3. 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/USL4R1814109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d997e832307c7f2900a0571868067eb549b1b110d587de0cec761a64511a1a6. 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/USL4R1814110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959bef4f23e89fa35415a6ee9d410cfdfb242e858deabf4e607b6c2c5db1498b. 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/USL4R1814112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2b62f5ce4c3c3a8b128c83b88c284c796c7e4de558bb4c3e3979a19d93571. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USL4R1814113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73ea72f81ffafe185ba14064bfb64c2c4c6871e9bf2092bcdc719c3a28e30bf. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USL4R1814114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2b5dcdc209b29b3e2294eff7b1c61736c4a33f57ad8696479eb766d8752bba. 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/USL4R1814115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c9c11c9d02959f32142740ed2ca4923044df73cc0738fce0a6caabe5b221c. 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/USL4R1814116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed1ca3c22dfbdcc2e0d983092ace2e3d99ba8a40a941a2025cedcf66c28713a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USL4R1814117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde601dbe9050c512c65664f829017acc51e9d0678d1cf1af371022b5b461b6cf. 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/USL4R1814119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a2e0bdfe36e55bad7570fe19ca8770bb9185cc39b6afcd5946b16cf269f8c. 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/USL4R1814120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1525a7893ecf3cc33f511d57971495b59bdfc5f370209838827b9bdcb002a7b9. 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/USL4R1814121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0011afd20e520ad931e9cf41fb603269adc31420e4717247b24487af3ed7c8a2. 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/USL4R1814122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b9d027367223f9edad3deb84da477006dd649bd247b5a47c2e2f4ee2adc7ab. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USL4R1814123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688446c85687fda00d35638ac053f42f58f9d5169b82b097a76263794286b0cd. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USL4R1814124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5785d479792d6691dc0039b106ffed45a3ff326282c4680c46c435dc81b58cb8. 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/USL4R1814125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee6924d81f947cb3012d5f555aaabe4554602e676b3318cf0b84629093334ce. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM81916820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43af264adde98306c2f8185e0f1d8846522ac5da467c9eecd293cf91a0fae202. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/BCRFI2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0d95b32881a9b6571033899bf216408dc2e774fec53bc0f90b834c1187b03c. 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/BCRFI2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aec292d8bd2cc3fb1ebed006e0cb6fc9ecb78aba6dcc34be2920d499399a1d. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BCRFI2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ba752fa53bc8ffdc6a6d4c186b12294befb48da2327b0213265a6e675a647. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/BCRFI2300005.