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 0x4ca12dd14d6c31613f410a3e9aa46e9f467481adf3376be5e08f5c743fb7685d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfb2f0f1-7e66-4074-ad8a-d9c94bf82c29.json and https://artists.proofprofile.net/proofs/artist/dfb2f0f1-7e66-4074-ad8a-d9c94bf82c29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Descubriendo los transportes (Cantado por Bubba y sus amigos)
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 0xdf48a0ce3ff7d6f5b7a440dcf92cf26be663a7376b1d87acf01ad8c6bfab4532. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ART0G1800533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc192ddfd26590586157447579f45a5e1732dacb05226baa136b9ff87de9597bf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ22B2003123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ff5ffeeac3a920365ef5f564e0a7217e196d0f78ac53c9d6ad6b43ee2f25fb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:55Z), 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/QZ22B2005877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a98687a32bd83ab196400ad089fcd748f3a4d6ae870aaf6490b335818f3613. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:24Z), 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/QZ22B2005879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcc180ad2284ddd48fc00ec747a94e3e3b986bbb869ff95bc18859183a7b869. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:34Z), 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/QZ22B2005839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5735262d1a24228e5c0dfcb4251240b27b916587005292395de73df81c2465fe. 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/QZ22B2005842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f15bbdecc1d1e60ab7c5b0012906c91ae8cddcc58050785b61886e4d3f9b778. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZ22B2005803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd39b87d5f89e30e04f79bec124433ed50c9b646208c658dfb9e530934b6afdf. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:44:34Z), 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/QZ22B2005804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c07526521cc06c39a5fc8e714c1bd2c43d20ba139c2dd2b8b610ef5140020e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ22B2005805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d216273a51574bd1a3c3b0e7e30390a39d9d447cf58d7e967630cb6b2c9209. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ22B2005807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343da11867aaac7d19f4d478207af4599cd3e3b91dfc43fa9c062f014852d3f. 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/QZ22B2005808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8f7e2d78b55ed390c33c09343a938c8e053a20cebc73b74cc22edbd2bee54d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZ22B2005741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814b3bfb0a9d8c68acaa9790e61224f99a29fb5b60b6aa866efc3822b7ef3c24. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ22B2005749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84c89585de88d48f45b5f71b0b1d867ae244f26e70faf4678f2949a1b263351. 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/QZ22B2005748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814b3bfb0a9d8c68acaa9790e61224f99a29fb5b60b6aa866efc3822b7ef3c24. 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/QZ22B2005749.
Descubriendo los colores (Cantado por Bubba y sus amigos)
Bubba y sus amigos MIX (Cantado por Bubba y sus amigos)