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 0x6f80d2298f946c6f3f890150f72c515db4a834ca39d588d33133f0cbe29448f7. 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/6475a2f4-3b2c-4426-825b-c6ca2a9d2fed.json and https://artists.proofprofile.net/proofs/artist/6475a2f4-3b2c-4426-825b-c6ca2a9d2fed.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06846148242142abc8d2d1106c0eca631c7c0579508172612368f360e85fae5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA41975126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdea5b9cdd3ed9cbb6ebf28bfb470d8b1abf9915a8d4fddbdb7eaad65dc55e5. 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/QZDA41975128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a885316de3935b5d6fe45819f50804159075f338ba8b3b6e56561ec436b243. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA41975130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85592246ee0c9b824b3815c1bc74adb9ecb893dafa07064f270000e1d1c1ef46. 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/QZDA41975131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0933daefddd15c47f594095a16ccd53737dd1fe768aa1e7625d5c3ae6c13d827. 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/QZDA41975133.
CelebraDios (Himno del evento CelebraDios) [feat. Vico Ríos]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dba9817d50d86f31ba3a2b43020cf79a662f3272bc164a92a3e324af23c7b7. 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/QZDA41975136.
Nueva Generación (Himno del Encuentro Don Bosco) [feat. Eliseo "Ely" Gómez]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30e306ff16f62440ab47eb9728e133289fe832e84313ef15f378cb4e40d0993. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA41975137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ec6304b067ae9e1f7b29e644f9f6ecdc6bcaefa7e16df6aad8b4669941554. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:10Z), 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/QZDA41975127.
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 0x0947193861715c26e701cf2caf73851b69030d1779a3a3383a388b340b637363. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZDA41975125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109c747a917d65fea52cc786d8e9b7b33c97673db160bb5634317ad10a2c6523. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZDA41975129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942fcad408c6e1a93d4aabc8ff2c0e45dc52185a352df7e194fa546be33c3c7c. 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/QZDA41975132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373b2a029d9d381eacd62e6336061d4b6bffea6cce8710b639a2e9aff771219e. 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/QZDA41975134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81251c76aba613e1de40a7bcae5d8f058fe1915f588148c83aaead25ea4a5cc. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZDA41975135.
De la Mano Con Cristo (Himno Del Movimiento Fuego Nuevo) [feat. Solistas Varios]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39cbbe3428b42eef104f5a7d53fdc1c67b897f3d1ef22b398687901cf1a4e65. 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/QZDA41975138.