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 0x3a6ebfbc69b7027a8c09d9c54042280014c23c238edbc4b3d869aa12878b8839. 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/3e592359-2998-4ab7-a080-60e250cf3624.json and https://artists.proofprofile.net/proofs/artist/3e592359-2998-4ab7-a080-60e250cf3624.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 0xa88def6b2680cc7b7fe175c2d73aba50f1c5f8d39fe1322fd0c1d3a62c826ede. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLC071206001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f3ebb1b1c8cc699b7ebd51aaba84bf5044c93ea43a7e60565a9cb2788f1e42. 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/PLC071206002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d1d2b287bffc67c3b3a1adf5119703f28ea21b15ccb7f73236d9c5d7474540. 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/PLC071206003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0777d99eeb859a1ed0541fe63cc73a5f1d2a98ababb26407ae04c5968b82665. 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/PLC071206004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f09cb22787307c73ef5c169961a44a87ed347690afa57a697d6c0dc401fea9f. 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/PLC071206005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf853c8e04a62a9de7179da3a16b27844fc2b5e4275ff2b21965618ac8514121. 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/PLC071206006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a8e9b8b33ddb56540dee56dcde45e0795e7126571fc2574f296c27980d0e7. 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/PLC071206007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3812fdef7e4c2852f74bbc7b358ba8d22df8ae3b79d326f435cb83d54a5eb6. 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/PLC071206008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f92a509dd300092ce071d2209fdcd97683e56bee3efa0838556c097df3647ac. 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/PLC071206009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0a41c39fbcb43e2a69c06542a539ea4d972abc57e8d25a230b5530c9402053. 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/PLC071206010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90e13d7ee3dc1efe4885d403c7c77be479ce96a60b0df4cc6775839f276f30. 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/PLC071206011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b13c99a88f8cf27835efd2538cdda4fe7b319b3b68422f8e97b80667a281d3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC071206013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c4370812d420fdf2f3227e6601c79d415b3be2f3013ca692f8c5ea139c9a9d. 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/PLC071206014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed34cbab51339a6dcbd1dfadea839de6edb019f917b08f13f8451597f938a2. 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/PLC071206015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1b3b3ccf81353000f102288a92134d1ff11d55997549bd4c9e5567220c068b. 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/PLC071206016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9fedfd077084a35186e7dd7364c795069eea9aaf5de0e1bb0537f257c8be01. 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/PLC071206017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604d647b1b92191e6717ba948722423da3e66329beb289613401ca70d413f05f. 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/PLC071206018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd084e61eddb5627373a57857bed04b11210d0324e69f20da11ad751aef7ddf93. 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/PLC071206019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc1617967f70d54d307984ee708011894c8ecf97ffce15fe5a9bbaa4ebadc73. 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/PLC071206020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a458a22f5bf35ae8b7552be76e5c6367b8123f2456546aa932c4cc52374d032. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:14Z), 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/PLC071206012.
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 0xee2857864ceb7d127f028cf9fcf40bbc1508ecee7272bed1ab1e9f4f6f30ce11. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLC071206021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79179a18b51e74c3a774ba2397a324c0397f751fc17c1125ae810a1e8902ac92. 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/PLF241501661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd221aae57e5758c137eb7c3ee081122f6ae9185d7db8a3c63d1011660a2d7c53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBWUL2026093.
Proforma 2 (feat. Hukos, Onar, Z.B.U.K.U., Bosski Roman, Młody M, Buczer, Kobra, Zeus, Kajman, Kaen, Zduno) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e25e6a48c83ce521a0956adabb89c3ca8287d3508c6e973662865a64ae006. 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/PLF241401135.