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 0xa8411cb13238b68b35a9697e7766791161c916c7779d09ab496807d2166a4d31. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8deafa9-c345-4879-94a2-32b619649d2c.json and https://artists.proofprofile.net/proofs/artist/b8deafa9-c345-4879-94a2-32b619649d2c.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 0xe509cef6ee1b865d77bd3874c95125c6ba0c694b62c2ae3ae0491237bc041567. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:13Z), 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/TCADQ1848179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b7a87607ef985919721f5a1a50c9ea531bf13c42de584d5d5d5fef5f6bd88a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCADQ1848180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5dd3835f4f62a7f4ca776d87987be3d6d5b97e0f8ce2037c65e8dc500d6436. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:27:58Z), 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/TCADQ1848186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58b906ed293a7af4ff5eef7955a9b58709e601bdb9aa47e6324e2d89229666. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCADQ1848145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b22a69482702d4f1a5db04155935c821db3e1d690fb31db92b0c8ec57be33. 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/TCADQ1848149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5809ab004a8a72c6584134d5d954ed7ca336d06e641926d981e41364eb3ccf8b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCADQ1848157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fed9ea476f80ad0fcea5810065e50fe5d0b6a80392d46e5936245390d7d2a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:46:40Z), 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/TCADQ1848097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b48699611719b662ebd74b0fea2e92fea03468be8e52d6a09bc210eb2a8e79f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:30:13Z), 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/TCADQ1848098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9720a4292f5852483bf8afced0b03b662c155890a8170114987ddf85131df545. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADQ1848103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51fc6625b79cbd4063e32d242261ef5b74ddf8820d410b5417d9782c1e210b8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:45Z), 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/TCADQ1848109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e493fb21489c731af2908f5cf8a899ef979fbe45fd2a2b1f57c894bbb1d008. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:21:46Z), 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/TCAIR2460088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b461595f1f7185b9aa2757b606cb9f80eb1a38c79af5268888c6b52a5c66eaf. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAIR2460110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1120264f21ace4387d24f6c603e644240b6001238af3cf8aa6a416cd46643. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIR2460124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0039b687ad6ac1071ffac4ef6c8a2ae9214630882c1dbd86ae8c6cdd049b7f70. 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/TCAIR2460137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cc142780afcc81835cef1c9c69f373b738f05646dd38c82f9fb8d13e589a60. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCAIR2460152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296c6e94ee02139469844b4629175db3859be21e0a8b99735ec2af2e7addce34. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIR2460156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4833f863c360d57f72672f564dceb75a2ab70dab663fb3f90ac04931cbb1142d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:37Z), 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/TCAIR2460160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f047d6a9a8b0e1648743d02e31770dcbc403d52cb2417fb7ca2331ff355a48a. 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/TCAIR2460170.