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 0x67293b78630a29fda0face8837cdaf88d569539b0cd7c000759aba4e3c18b977. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ae0138-2925-4149-8906-5064959c02fb.json and https://artists.proofprofile.net/proofs/artist/33ae0138-2925-4149-8906-5064959c02fb.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 0x9200c20f95cd2dd2052297abecc41ef7b607b6ab904e9c6d563cdd5a4bf7088c. 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/DGA062015924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7dc12b0aeb813296b5d7f0e32c2d068c4c9268bd47057137a5592db1c026d16. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA062015929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af853acde57076c6acecc4c44502d2c1287081fadc96a72f85591dbe40674cc. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DGA062015931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a767c075f2c0b018987ec67b4c1dc291e71059fc0e2ff58fcbee618d0cf6b. 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/DGA052096393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdd44e5578ed4870dfbeac06a725a22297a737c7d2469db67fb31314522bc33. 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/SMRUS0070707.
Брат-ураган (Трибьют Объект насмешек, Рикошет, Выход дракона), Часть 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3e78fbcd8cde8c2fb770d9825022b32f105c0406e409f827b69dface06f4d2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2400837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dcc7aaee07323609bf3d4d4263685091f3a2b6c6cb372d187db4cf78e82832. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/RUAGV2402536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6527176b0c3378b15d253cac561df96b09832a92acaf669505652b86bee80a66. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUAGV2407879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943340dbac47025034b2d6eb994de5e2895c789a9b01e2d1749beb9a72c928a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUAGV2410044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e3759b3d9e11ead0ae5985798e696675a988ca96eb0430b360e46e3f3a8849. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUAGV2407880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cdc42a0f1de7e2127af8398779b10eaf1abf31280e24fb8cfc66223c93b7dc. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUAGV2410046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23abae08d9ed898ca522862a2f0d148e8c477197c05cc814b986cbd0b91cf63. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/RUAGV2410047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969d36458c936c12ef1f3ea6e21bced7d250a5314c34c3b2edbc29846470d08. 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/RUAGV2409767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac58a886d848a0cd85ed1683582dc053a97f9db8dfe3436f0bb395dac67e0591. 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/RUAGV2410050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6ebad7dfbc03f8d03fb7e5082f2baeaaf2a9ead53d76ef24a9dc9150dceb3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/RUAGV2410052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9ada3caa8e2565d8adbb9e5008d8c225a9d1e873ccb34a3fd128e1d9444983. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/RUAGV2410054.