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 0x1d558664ca5f98f47cd6a623b3eeb53eb9e2fcf9ee244e3ef307c11cb4d1bc25. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9a7f31d-19a6-4fcc-8da6-8e1926faad3c.json and https://artists.proofprofile.net/proofs/artist/d9a7f31d-19a6-4fcc-8da6-8e1926faad3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
За хората от другата страна на микрофона
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 0x1f9b1dd6030ce38552798207710bb2568b282621f6dc291b4a47eebb6218b1d1. 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/QM4TW1520420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abce71ef9046ec38c9adc77e6af7bc17fee8f59d571d3dac7ba9ed532c34d76. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:04Z), 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/QM4TW1520421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e80497056ff127771bfe7787be428ec23ae4473f4c82926369c24a966f2819. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM4TW1520426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6771ac4945f78539557db387b9c0da17eddf87915b43d77310ec0fa350a3a. 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/QM4TX1832706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad38973b7733d25e1feb5ef7252c7ede44921e01748a580165e3a0a2dc7a7578. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TW1920290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6042b5e7da23a259f628752bd1147c20eda5c2fb91f794c4da90ef852f296744. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM6N21952955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01785e1d29c8557874addf240531319bd781d39a1a1c9b9203d99022b591711. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QM6N21953056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2638ae8dfe8688444af20c51c4c9d0b5d6e9da614d877000a8e6cef4ea0b00. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM4TW1928538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cbed07517fd95fad2f071ba3c75d1b5c1273f12ac20f1d04206c8a63b20289. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:36Z), 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/QMFMF2019850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07a126bb58c305dfedc116f6c1def11024ed6337bb8aff5018f9e9ec49897c. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QMFME2149953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858125b653b2ceedaf3c5ab92e49429aa89ad400d055708618407097749c9c0e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TW2216338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e99939013f3b030dcf42348abe89f27864c2c8d1a2829761e30c55426994e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TW2510761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb22eff99048fefc88b00ac46f49c196dbe1b12672dee4661151309f2f0f4ef. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T19:00:04Z), 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/QM4TW2586615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7069993699ac0e1816361a12ac82d3dc1a584c67cec677325349718d4fcc46d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6MZ2504614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdbc9e7cb1136b84796c7d3eed7ae0d2ddebe4d9b2bb5afb431fa6612355f09. 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/QMBZ92539872.