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 0x9cd15fa460ef306398041b55ffddbfc910161f9fac3a578f3ea0247e8be7d0fb. 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/a0abe300-20ba-4451-883a-b4c5eb1a9aad.json and https://artists.proofprofile.net/proofs/artist/a0abe300-20ba-4451-883a-b4c5eb1a9aad.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 0x425b957702c87af98fd79ecf7a3da4468255e573c7edd356a7b8ab62b3fc6d91. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ITB002301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047db1ceeb32e4033172a3fee94798554859cd97c1f40d9c84d4ef5217697a3. 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/ITB002301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc51a7d4d819dd5e2dde38e3e7b525836033b44548125ba46b8d720792834142. 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/ITB002301143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6b0cab474740a4f63190e3dcd4fa5766b05b192c3f70442b1205e1948310c9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITB002301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac5aae6520215733c0e204d65959638d5984e109f39f3e36eafdfbcf798c27. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITB002301142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd587c46f834eb79cb1ea54fc93725c9c44386fa639ad6af332cdf0dc2e0565. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ITB002301077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770d54a8fce07de274d0fca30a0a6483215b62f9559723e08f5fcb01fbf80c64. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ITB002400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60e1af35febc9c17c23e1da6f2908ed2bccc3da21c5bee1792133b018b4f5b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITB002400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2da8bd9d9c5ee89f8532286320e9d8f02b4c68a1437a8b7a55a3c669ea8cab5. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ITB002301138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425b957702c87af98fd79ecf7a3da4468255e573c7edd356a7b8ab62b3fc6d91. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITB002301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047db1ceeb32e4033172a3fee94798554859cd97c1f40d9c84d4ef5217697a3. 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/ITB002301139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc51a7d4d819dd5e2dde38e3e7b525836033b44548125ba46b8d720792834142. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITB002301143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6b0cab474740a4f63190e3dcd4fa5766b05b192c3f70442b1205e1948310c9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ITB002301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a9a0be61e86f5e6d59dea8321228d2e0938ae29109ff83f25b9170e8835d5c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITB002301146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662f68dbe330a410315be7ab87c580c425e039657c5685397d5a5227fc88ae1. 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/ITB002300421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac5aae6520215733c0e204d65959638d5984e109f39f3e36eafdfbcf798c27. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITB002301142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30085c7b048909382061b5678c0269ba3d8250c2916b0b066bf4e7f2f0b8d2f0. 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/ITB002301144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd587c46f834eb79cb1ea54fc93725c9c44386fa639ad6af332cdf0dc2e0565. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ITB002301077.