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 0xa57ef70bd5bbfcf7a7ba2111777de7ffec7052bbf99b32c72a07d5bf8215af30. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b900f55-1423-4504-b18b-d42dcf72e629.json and https://artists.proofprofile.net/proofs/artist/6b900f55-1423-4504-b18b-d42dcf72e629.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Depósito el Penco (Desde Guadalajara, Jalisco)
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 0x7320694d6dbfe87b8f87be6798ede52deed31a253e51983f1b546cd36339d6b3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MXH152100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf807b5228f09081106538d3862c1a63e3127f9e4ff37398622cdd3262b24f234. 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/MXH152100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50321153fd81d44109a85cddec5ab1c6479c8ea6d955893628d000f301140be9. 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/MXH152100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59046297175f384120c919190eaf13652c0d1d6995cbd54622370e62e5aa34f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MXH152100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e6f0b5ecb02c2ee51269dbe89e8c16ff6d995a398e46c47e4eb047c02b5a6d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/MXH152100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acd2942a496afab7a566983aef44070de0afe69fc9270fb1fed224184a22138. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/MXH152100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889ffc777bb5c4762e247f8f8690561c7f39db832348064b865e9955d5da3aef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MXH152100198.
Popurrí: Cuanto Me Gusta Este Rancho / Amor a la Ligera / Que Se Te Quite Ese Orgullo / Y por Esa Calle Vive / Se Va Muriendo Mi Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a61530e176363c6bf5c0259553c5c20abb312a2bc7b8720a07732bd040c356f. 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/MXH152100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f237b6933d0973f267ba8cb5b7c0e2836415ecd280dbade29444c96bdd7fff. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/MXH152100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c867d3349a0af8ae62fd97af459bfa24e739fd0e065840497ae5d68e56ea70. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MXH152100213.