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 0xaffdcbbb7ffc01422b9d930b6fb4d9161f863c2e601a646e3ee5aaa54564cdd0. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/412d4de3-1354-4c23-823c-f25f2afbabb0.json and https://artists.proofprofile.net/proofs/artist/412d4de3-1354-4c23-823c-f25f2afbabb0.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 0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88. 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/ES5022301041.
MAIKEL DELACALLE #16 AFTER HOUR THE MIXTAPE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82206b139cacb2ac981ae5407d798fe4d8e60d9bf7c1c4f07d2fa0305d9f6416. 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/ES5022301273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073d6b14f9fa877985920c2c8c8c9adae940ec36759c62549b8c35f20926aaf. 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/ES5022301291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742c59fb91f4448cdd367e26b5c52e5e61d0ce00077341dcb7397a8723bfb066. 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/ES5022301307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e514b17a603396993258e38b71635b011cceb6f5d88c9615f7632325631db26. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5022301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa286fcb005ada683796805a097ce1b20db797f6c1858e45aee10c30cbf8e874d. 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/ES5022301214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50111d470ea9826fb084678b28e24dc8ef15fdf824c78cd51b63565d4f0767. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5022301319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12348f10b1001497305a95440b47b1dee93c669f755f18072df44a050fefae0. 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/ES5022301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847108799e47f7d151232c5d253b4210459a3b21f126b12373679dd5b116bb1f. 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/ES5022301317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd546d1d204ebce5c0064c2e6c36f38ba6e95af5013d8d73178f0b6cdee859b3c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5022301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d291e4beeb7e578af7b96025da19eafe5af61895e9717ed175c624431cc6416. 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/BK4DA2303414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca55b2445a423d9a0dd85c40f0c73c0f47cdd6e18c65b2735e0dc10588b484d. 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/QM22L2101457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e8c206018201f5da0bc77ed7e5ad1b01af8f22ff2d5c04f43228f80ed6b626. 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/QMFMF2465207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630abf2774255caddfac7d29ed8da9ffe90b288fd7af9ea06e26431a9a1349b. 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/QMFMF2465153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81928e7581c89191df086e83d940d0699f7f3f7e69f1dcc27bcb761551812166. 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/QMFMF2465125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b53e9b8dd521b7b44ef8ac598d9e621aa4229739a66ac2cb484082922f0902. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2414728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7212f3b7238c132accecc1a86efbb646c834a87613c50cd0d8947cf24070fd9. 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/BK4DA2413731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41270cb2afc5d9a1e2012db08cda140f6f95daa2d4d11610a94d072934172a9a. 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/QM22L2502780.