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 0xb3652ab9bc1a635126d7466c692bbc571c68079a2be15069fab30238b32fef91. 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/34365b4d-3b1d-4865-8a30-c591a7d89fae.json and https://artists.proofprofile.net/proofs/artist/34365b4d-3b1d-4865-8a30-c591a7d89fae.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 0xe7a6ebc881da5d8c397cc19240f05a2724e77abc889d63ed64a18b1376828801. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXUM72005532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00574f5ab97913938cfb1fc2910b4c014e754301338b205d2e8368a1cfc5534. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:00:03Z), 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/MXUM72005457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a1f31a4f83e280983d4beb636f07c824555739ae44fd34be5ad8038b915594. 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/MXUM72005461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68d20d2aa182d5c6c081414d4aaa5353dc516d7f901eea8f08347f8bcf837d4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:13Z), 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/MXUM72005466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d658637712cf99fb02a708e7aad68227d0bc47934df899b43fc8faaaa4d203. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/MXUM72005427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c74f00430d0979c16915e5940fe0624911dc21be84c0b746148a580f293449. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/MXUM72005429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20300e875df022beef68d83169e7c37309a8181323e56d580cee0c05cf0da092. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/MXUM72005436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19961bfae409efd13a457f56f33e2fe181c4f176ef8d9bae9ea1499762c1713. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:36Z), 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/MXF398900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09723f6f5a191804d5c01bcc22f76d9ea16f61f0c834ccc71b4d1efc67a52a22. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/MXUM72005490.
RAICES NORTEÑAS, Vol. 10 (Para Coleccionistas)
Ayer, Hoy Y Siempre Con... Kiko Montalvo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2021f87e8fe18eb5e7bf6b7186cbf96cf5208bd92a1f889d80c4ea97b7a9255. 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/MXH152400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc049d3ce6f5885fa8ddeacc6905abde963e1fcdc4a63bb05bb8557dcbce8e97d. 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/MXH152400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0763236561b0bf808ce6cb7f21cc745b85c8a1b98ea306b37716ae0b895632. 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/MXH152400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef398be9787a9fae290a2aa1d3558cdd65f88c955cfd51eda012af073c59dc29. 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/MXH152400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886a9d44ae0463fec8d03fc5df77cc425e95138ad0725437794de6d92244419. 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/MXH152400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2ad4222bf8b668f7950d97b59f018127ceafb84c6bb15d68994f6845d20610. 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/USASN1400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6ed477054844074cff7441af97318211411154b64096c164cb6883659d62c2. 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/USASN1400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9c05cb567283cfb95976abbc99478617ae91a1791110751f513fbdd8cb14e. 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/USASN1400512.