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 0xfdabae820e1f983303afea600135d7c76c7c4959e595876b00a475359f263487. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b458c24-1b7a-4868-a68d-901abcec1443.json and https://artists.proofprofile.net/proofs/artist/2b458c24-1b7a-4868-a68d-901abcec1443.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 0xdfa3585aec0d54e94e98b9befdb5d73b23db72e4636b46190bef38863348429a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:33Z), 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/GX53U2384209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337d32b84652248ceac19742195d4a7e3d51ba47b5a0a6fe1e0391ea6f7ab207. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:42:10Z), 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/GX53U2384198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f859fed6714064a51d40eca197d2c96c10990692bb425109866211bd5c9c52. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX53U2384197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ba19005c94c0af494d2ce148b77972fbcb8afe3a35a7b00c444a477b80e22. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX53U2384233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1106cce308c6e9d16a9081c56796548fedb9ffdb3fa713b750c226271872ce. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX53U2384294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a47f0412a466c6133ba1beb974aea27275728ba4f38f3b8a62ec148d1428c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX53U2384176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0003b4b0ae14e1334ad6beee36960e520408449cfe6f0e16728fcac721ab638b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX53U2402323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779890b7b59cfba7909ba7ca8f39f5724208ebe5a63924e581e375529c1d92d7. Chain 2 (Bitcoin): anchored in block 958556 (2026-07-18T13:21:06Z), 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/GX53U2403275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3940c82fe9c0b632f9886b56b0980615cde4df31ff7cda8597327b14a9288b52. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX53U2403302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939478771852c7574e78ad246e9c2f2684af3f5c039eb222e454ab48efce9a0b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX53U2428879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3b6cb94b3039caa0fb8b933c99b9562e89c8a406fbecac1250676ebe7e3f1b. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/GX53U2428826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0715e24c69bfab8c29684933804cdc26cdbfd5dad2a6fedc2eac6e609733bb5. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GXF9Q2549593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88962c4cdbef5444d12c934fb99193d7b8936e7940933026958ec6be2ba9828. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXF9Q2549698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd752cf169098fafb01fd12ccd2f10d50b1d2c0a295b71da5d8332c2d5879af. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXF9Q2576330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1450ad441fd7b8d8650aa656bc3d2a980fb9870678a8f7888b4e7a87d3491f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GXF9Q2583878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c94224cd1a28e088d3030f8bc3d9c3311b061460bd4c1f15a40ee011d557fe. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:34Z), 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/GXF9Q2593721.