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 0x497e33970d7298a18a017aa512166ed52ec68e50a2f532c8fb5f5a576c026475. 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/47988d09-77dc-4719-96d5-d526810cfab6.json and https://artists.proofprofile.net/proofs/artist/47988d09-77dc-4719-96d5-d526810cfab6.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 0x69e775cf68da9189ea9f02f01870b8f919d9b5c9c027ccc956b55ccc578849c5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMPU51267095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05f4ee418b9a05fe221112e7f71b7b34f83ac24358124b118103ed1501adf9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMPU51267096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9d663dce3a3173e9fa3ea51db7e7572a74b09e920de724868ef911089b3122. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QMPU51267097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a69a5c5f8253b8eb834f7dbdae89878eb40a9803cd06105a7546e4431d03fd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMPU51267098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619b27338b6f5157af92595f447d34a24d3a06ed4470e3a7eb36aa73ec8e05e9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QMPU51267099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846f17dc3f7db364292d1cf44946181a06401cabadda5074de763f4d67c61f2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMPU51267100.
Радиационная активность из мусорного бака
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d06a2770c0fdef2579058f39a37e1fae1af99d0f50c8a415d3974d9c7395afa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QMPU51267070.
Destroy For Creation (Разрушение Для Созидания)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140300dbba58ee611da4476506ecabd5d52e5baa0eb03680c774fa4f72dfe522. 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/FR59R1667553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab07ed9c9bc4c016fbdcd1a5deda0e6f84ce75bad510a50c107ce51d121be4. 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/FR59R1667814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eebee74d75401d7c75be9dd8cd97e378834a5bcbcc2df2fa91dfe38f7957fa. 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/FR59R1667815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc44b33e4cf2d4e137f8a492750267fe66f23f8bcf0a56697bcec70e6a52780. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR59R1667817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbe6063d20a0a724b33addc48ca51f1304a360e678d5224823ca333da67aaf5. 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/FR59R1667819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da6be1ea1605bcbd6ac0c3611b4083c2abf706be12abcabd6df0c27c9ccdd03. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMPU51266980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad83d182614b714d5f94df37bd7d03bc7e3a13560558e0a6e19073979ed5ab86. 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/RUA1D1822363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477ac35313fb88dc0c538150eb8002e0ab19ab2210c240150907d274fb3687b1. 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/RUA1D1921436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470cfb8d8a0b26f59f409453ca9bb8e43f08e6342a452717f438729161a137b7. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/RUA1D1921435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491479a2b998209d20627852c102263695a309df8e42a5d7a28c40961eb0f6c7. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/RUA1D1921434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8615b773dee6ac225c8e41812d5378f458ff7be482aec2dee9d16befe0556088. 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/RUA1D1921443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5084c93df5f15f84bec7a4906477837412d636288798285dd2b1ad30aa6743b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D1921437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce617b3a1b91de2bbe2a05d4197d981d0cf4c89a65a60e2178b034e452fdd3d5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA1D1921445.