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 0x200449aee211c295dee56fbdd7b30708a5993cddff9bb576bf8f008463c24f55. 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/7d709608-970d-4a27-be05-477e4ba3d3e4.json and https://artists.proofprofile.net/proofs/artist/7d709608-970d-4a27-be05-477e4ba3d3e4.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 0xd221aae57e5758c137eb7c3ee081122f6ae9185d7db8a3c63d1011660a2d7c53. 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/GBWUL2026093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b78300cc33cd2ed42ec6f02f6cb49959b83d019bfad4c825e9e029a907b4e3. 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/GBWUL2026094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb154d4196515ec9236be5d852308be7619c8c78aad0f47d3b73b74089770513. 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/GBWUL2026097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21cb60ee73d01bed6823f13779c472490cea736ec3f5d5648f5c253455afe1a. 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/GBWUL2026105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0679c686888d9440e523c71d509fec75511484dbdf16687dc0013c0ada91879. 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/GBWUL2026107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8333292e4bead9674889974951a03c0a1a4fbd58386ce31f03ba7f89c7bdf94. 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/GBWUL2026108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b8ac437f0996cd30fc6d83a75e9a53b7d85cfce38dca82090d30affd1f39c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:05:28Z), 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/GBWUL2026112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520164f36f7040dbfe2f994e9cc616eafee0d2227cc3a4526b4ca725dfefae6a. 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/GBWUL2026115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a3863025dfc4126a56f50d110d3a3c1deb30c65d54e6714bd38e62646a95b0. 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/GBWUL2026121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3fb44d48e03834e88e376ca94b185d2316ba804273689ee44b1756345179f. 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/GBWUL2026122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f07f3c85d417166b4da05b485b333436c9f64fdda3fe2536ccc11f49fae71db. 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/GBWUL2026129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a88e73dbc95110e86123339ccdf0fcf24a4a8f824c61fb4a8d9e69bc117751. 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/PLE951200935.
Co mnie nie zabije to mnie wzmocni (feat. Egon, Lukasyno, Bosski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6152cc11b4176ca612b41fbd93b4197f88b5bf5271331cfc4e9c360ae569d6b. 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/PLF241704900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd214ed4c38e6fca4bb48fccca9fd67717d3f42a26da80a182065435adfdaad56. 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/PLI368422350.