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 0x1c4e9d973e13be084099758ef8e5caff7910eb914bf3735d9fac82d83167184b. 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/788ceec2-565c-4828-972b-b8e81cce03b4.json and https://artists.proofprofile.net/proofs/artist/788ceec2-565c-4828-972b-b8e81cce03b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Carpinteiro (If Were A Carpinter) / Escuta Meu Amor
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 0xe7096c2c36230e2a43bdf457409c3ff805b943610b863b8fe823714db6bb5cc6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRMAX2300789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b2c9d9b67b275bd949e84026fff55d20cd040d3acd04777abe0ab5c1ebb1f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRMAX2300794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1fe28867e380e961d07678eaa284a10ae8e342fcd8491419c41299d0ae6917. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/BRMAX2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865247ba749daeb97f9e81ac720cb51848d86bac5ae1f2ac5d29d34132bd9403. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRMAX2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87769e726bbec492b4d6097d4c2b3acc2c808fbd0a0e6cb57601d1647f55d04e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRMAX2300755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78441f00bd9a8b30fd2ec28ace87348c2b1dab6cfe0dfe2aed8685719da1525e. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/BRGRV0501058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95179e1877d6285495d601145eade9973911e77fe89ab6d4d103005d2e6a4100. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRGRV0501059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fab74d9096473fefafcc331c18022bcc370d2b9008c4c65c14ae2be27fb1032. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRGRV0501060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77fa0a81784aea36bfb00eed499d016acdd8c228691789f61ec92000e885bf. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:11:05Z), 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/BRGRV0501062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb4321529f368c936071fa77d2a9ed6525755646a9efa0678ee9ea38026daf4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:20:56Z), 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/BRGRV0501063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8182860cec03ed4b57b3b740321f23ea31e3b9977c5c792b460dce40272185db. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRGRV0501064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927f019b6c2a3425fd1586dc6e92e723da55708e0a25a2344b2a71d4d19ffce2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BRGRV0501065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910a5348011bd4e2cec63749af7942117a301650f2e11f338e44a6735be202e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRGRV0501066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4eb857f10707e99b5621834f94c9562fb660602d2003efe1b8a6d27b0d4cc43. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRGRV0501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f7233dc917f3f4c796cc259ef6ff855facaaa7239afe1c6152538abbef1a02. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRGRV0501071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88e3a295736fbc9aa9fb2240ca9bbf1bec2c85ea69404c7a99da98836e7dc43. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRGRV0501072.