1995 was designated as: United Nations Year for Tolerance World Year of Peoples' Commemoration of the Victims of the Second World War This was the first year that the Internet was entirely privatiz
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 0x34ff4bdc62414e2959c9f6ff81416a559d8b951b4352e7cd727ad40be08a059a. 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/df185f17-1f48-43e9-bf38-e94fbe2e48f2.json and https://artists.proofprofile.net/proofs/artist/df185f17-1f48-43e9-bf38-e94fbe2e48f2.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 0x203ed7eb355cf767056bcba78721429e8ba2290c96cebc06ea3556a5073aa9a9. 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/FR6V80579917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48eee331088a53ac4bc5e538d22f7fc8ea5baff65e94785a31a70411de80d4f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/FR9W11200813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b59963bfb3a977749c2c6470bc25519b31c52966667253ca0cce72cd96c4f1. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR9W11200812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d4405dd078f259e21d0a0dae64b178b3ecf4251e0c2e88c497bfb14abae97e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W11200809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f0f6a0713f3e0e7b7381bd52a4b999305e95b94b2685de75f0b1c95a8cfbd9. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR9W11200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01cfa6c531aff2adc98c7ce7156a1cba145b500972002862fe6b0cc87b639d2. 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/FR9W11212672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b73d401d5abc5fdbbf898751ed72e26bf25878b2e1e2d37d143c4d98861fcb. 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/FR9W11212666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aea4e045d8da5086a8d3f84a8eaee815f6f68ab6e3af47b9fff6a5b5343e83. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR9W11212657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5185a2e9b367597dbaa4daaf5bfde0f01a967bd7e6433ee1c470b374bcca1a21. 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/FR9W11212671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1cb85e51d19eae1d4d030895eacd70b2798135a70fb0f2a6b4cda2b4f72a02. 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/FR9W11212667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb162210a82e763220ec149302316a25b7248cc7949a1b4dd916562a66878097. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR9W11212662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4064b648b363911067f2da254b2f57c71ad39e29a31d265880f59c6a346813bf. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/FR9W11212661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06fb897a4349490fc77a5e2e96a836c0d948236392d7c412f5b4fe0459b5fd. 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/FR9W11212659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ec59770a5c84687350fcca9ef83e5079a44f4065bbc30f9f070da8c62a8990. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR9W11212673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3281749f20d42077a7f432d124aa611b90042553dd0b45b786b5def3d1f82411. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR9W11212668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5e6eb81c0122a662798a900c65222281859a3542395e3ac29edf44cb63c062. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR0U91401071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfd7fb490de24a339928db9e292b8cefa792d5462b9457b45a67dbd445a728e. 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/FR9W11516357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d86dd482cb4cf0413c8fe18e03bcdaddc7d2fcf871de736fbdf44cbebb4fa6. 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/FR9W11516359.