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 0xee094121c4d805afc206d27ee61b4b3eadd9b1e615ac41dfe5cd56874082e227. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1ce1b26-2537-4d8b-975c-f6593188067d.json and https://artists.proofprofile.net/proofs/artist/f1ce1b26-2537-4d8b-975c-f6593188067d.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 0xf0099a18b501b30b5ca346c255d350fb347d109bf68080876fddfb3beb6e14e4. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZS7J2314281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c5b7552c33a0cbd4acba03f167b8cc2145c647d9321f744e294dfd49d4fe98. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZSYP2327876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93291d3636e254a1f1b3e4148782ec6d7fd6c792110a7b79cc49f7e65bd1174. 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/QZSYP2350186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002d19c53e40d4770b1b4085d2d82bac59d12994cf1d3d11a04867c33f3de7a. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZNJV2315467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb03fc09af1be2cdc6cbe3de687c25b617ff257d44c13ab6f323202f464d5777. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ES71G2308755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864369e58b1c24aa7f4aedea629f6a627f65b00f0636a03b97140af32cd3741. 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/USUYG1403707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5849d3330b26a3e2c9f6751d598fbb9bb8db109c38bfcfbd2b674d377051441a. 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/MXE672000040.
Asunto (feat. Lord Juan) [From the Series "Bravas"]
Asunto (feat. Lord Juan) - From the Series "Bravas"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7e221e5cd4759e5a5df87a6792b533ecd9beeb955c1bebe908a836a1126e4. 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/USWL12000476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4822fcbd0e7f7b882b3eaf0434841ae648f7ace4a838a7412106a45d2fd4059a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHZ42068461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf33d8572f307d62fc88d0ea13b4a1d104e3bd59a5b5623ad3f7e6f49680faa1. 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/USLD91724926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4f0e8a65cd9035ff7896f732b912126dc1b45f45a426ccf5d79869ab802615. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USUYG1278727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dccd4d9de60ef8a038bfa7ab921bac720c07db4ece746fd2fd035b0ee5ca352. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZTLA2482320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1105e2f8c49cd78e58f6f7b94f95338eb93fa7f6ff69d3e8d8684f57a781cc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZQAY2482625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5849d3330b26a3e2c9f6751d598fbb9bb8db109c38bfcfbd2b674d377051441a. 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/MXE672000040.