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 0x7efce1383c06c49ba1c1d699d103b1046d01b8761a7ffe8534307cf0ff84dabf. 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/54bb16d8-f46e-446b-a572-62ce1c607074.json and https://artists.proofprofile.net/proofs/artist/54bb16d8-f46e-446b-a572-62ce1c607074.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d6a30f331e76f829508022087ff9b9f0da990f9054d85aa0b68616a5286469. 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/IL6191700847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b13ddfd6710d96b67dbe8834a8eb718c9abf783713af3a4aac5ba4ee7ded1. 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/IL6191700848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b6fcfeae68c1e291ad9f9daf9c332b9e227b15c3af5b483e31fd528b443c0e. 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/IL6191700849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ca1303553ee4a3eef68cbc91c56ca3b33c1b681a9a5ccc610782a16ef1131. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6191700850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fce277da2d3be2d30934c43a23eb6d262fa7b7723ac15d1d96b103e6036dbb6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6191700851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c7f56b213450a1333537efaf66ad8b988f6e64854bdde3da36f09df3fe7f44. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL6191700852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2f30fc7a0c7c5597b2188df6c365a5cb13d7aeca64936588abf689f62f08af. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL6191700853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d71d32b843a1d9cb8503d133cefc3268aced0d1e3c6ec45e754a8c59f9f3a13. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL6191700854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddb70304a6e8083b684d3587acb4c15830e21bb104af83bfbec5c84c69485ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6191700855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbf236ad1ca1e03bd0d3a2b5cde262f77e1d0959a83ae66b1120007ef7d4686. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6191300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eaf38de873a8dcf0cf89b8e74d983cfaba90f5ed6f32a79985ce6ef8ed209d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6191300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39deab6ea7cb42b69fc6a07f2088bd7095df62ee9dd95b4bd5fe8f55fadb62a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IL6191300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac297517040c99a78a4f5f3e8499e239f47f7d3a0f88e443fb06075a4bff7ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/IL6191300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff9dbff205b6996cdf519a06f97c9dc67d1690d3d52d19a9c3bb3561cba73bb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL6191300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a24694e52a7f1b90761ced306dfb1e65fc2a124f4f0bbcae1ab63958b1d7881. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL6191300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c798db90eef5a016bc27ce4b9018411c35dbe775e4e8c4c7a489968b1e512d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IL6191300084.