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 0xdbddd950ec4cdaebde6f24a75b8f208285560df1ac9e31331f4bbccdf612693b. 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/c52399bf-1a58-41c9-a772-ac442efac8ef.json and https://artists.proofprofile.net/proofs/artist/c52399bf-1a58-41c9-a772-ac442efac8ef.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 0xec475132c8c475234ab46162b651b33ace74b7571cc75ebde518451a6f617691. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRMU11300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9d862c68e77d166dde8ee720cf33792701ff31a32618b29a13d04e28adcfe0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GRMU11300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e1e4e0cc0f9e230b2dad965847e17d4ef4a7d95e4013eb21fb692be2816d6d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRE010700526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4745e92d769fb843afa3f62220bc77df2307693748f9b197ad162cb0b2157bb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GRE010700529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c124a64891565702100ee12e720e9aeb8427a266467dda16437cfccbe9138b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GRE010700528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c9890af34840841c7380aad2ce0ce29b534884d247854ef72b557e309500f9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GRV019700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2762aef6107cea3884b36357705d23d6f314a9ec149242fc0b29f9d382e7f8ee. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GRV019700068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6305f9295676587834488d66e98ad184ee83d3ba4a1764d293a8a75be235a48e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRV019700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367265c2039c10c8d35a0dde8feaca22d6da6217584b1b432a6df5fdc883a0c1. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GRV019700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0017e25b7dc3aa15e7b4c1cf7313a308e1073a6b09845f0b32c7ffb602bdbb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GRV010000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cfc9ed26f3fd53831cadbf9b64b963f2b2a8e5c3c589dd85895aef1bab2971. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GRV010000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f5a4f722a2b53347b28f83abfcf687012338c0b917e92c42a2594d4095a01. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRV010000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c6df3e8a9c715e372c0a5da9601c481a0b5b55ddab973db1f69f1ece4dbeaa. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GRV010000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8d0d0726440110f4c48d95bd8fd0d6f63d2ddc8dc0c4aedb0b911b077e7226. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/GRV010300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f94452cf255629c7b1d91350fbd89f6f91a4426533b34b2d145bac72212ab0f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRV010300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f516d0fcd4af96266dfceb87caf63b61096515d28b1d546633c24570f00ccb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GRV010300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdf28bf6b188a58e350cb311d84d3540eb12e5bde0e5bdd7189a6907100a2aa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GRV010300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab2484abedd50610b9f10e93b20a7b7064193423de201fe1e9d1c045e99ed86. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GRV010300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a2e517a53b43551a8cb9314ebfd3c103ce4db2317790bf3e9a4a5353ff4eee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRV010300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb59da609421f0bac7f4f11689e42f5fc4e3ea48901dea62d24a702d4c97cf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GRV010300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde36f22b9342f6816cd99dd03cf6af4d8540458df065c3b0ccc9853d5132301c. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/GRV010600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bab1e2b92c80bff0d1444fc8c4097cda9aaf69f4f38542f8ad710b7e2fb5e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRV010600013.
Ta Xilina Spathia (Songs from the 1st Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39ad9ce2944092904c4336d400d13ff108381b5a141863a3e97f3a6fd8a2db4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GRMU11300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaec21963359d57f9dbf0d26e4494500de818847fd1a56a9ab911588c191be6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GRMU11300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffbb418662379e5355308c9083a7d00cee0455cb0bab002fae724698361dea2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GRMU11300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4721984d2904bead82d2a8448dd78809700bfdcb88cd3ce05cc44f80a2bb714. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GRMU11300093.