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 0xf228a6af0d5c0e3803a07eebc03211006b479ab2e064e7af965a3bd49803872f. 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/cc844661-8cd2-46f4-ab7b-802a1c0f563c.json and https://artists.proofprofile.net/proofs/artist/cc844661-8cd2-46f4-ab7b-802a1c0f563c.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 0x22261312bab29b07189bd6436cdf76e7a647ea6f7f216ac5d88088b8b9879445. 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/TCJPR2269282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be2b539c617f8c4e56fecbc10a4a52361b79f06070083ccde6cf1dfec30cb33. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCJPS2222730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4150e045193f044a32a4196d26f9fbfa60f6a9c57421739af478a5765d95d7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA072236353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe26a5895cfb332095445aa4e548a117687b54e8e4119691ec5986853f499b0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:03:38Z), 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/TCJPU2225813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c9264997b375552789cb3d3ecce8ec0daad96d7cc75a7ad1c04b74eae2bddc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCJPX2345186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ee0d34431e9aa8dbebfbdb36a25daef1e8ba71c31b64fd694b7fff1b699bbc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPX2380811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b3fd12788c2a0563f6d792c55ac32baf2f68cd89b5384e8d328e7fe81ba0a1. 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/US23A1573859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c332189f612b271fe2758ac023aeb513f299c25e8e65b297a5b9ed2eb3a9e. 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/TCJPZ2486467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bf74023a05f7361e68d12dcb10bd8875402cc43647969cd562d7122b94dd39. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCJPB2417522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c55586d2486a486046ba6b20ee6b43603dbcdca99c529e27caca03b813fa4a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCJPB2443184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06204963621b6719318069f4cfdf5faf047ae916d424e739fa52ee96677695cc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPB2458758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06204963621b6719318069f4cfdf5faf047ae916d424e739fa52ee96677695cc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPB2458758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b47fd33e30d6f6717ffedf00a5367130dbef461a1b22cc6a10d421ca0e2deb. 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/TCJPB2497491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e34420339d4373a1965cae419042d6808b839e91b7ca73d4edb14e0a27bf788. 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/TCJPC2414747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11673f65fdbe972400dd768a900adb827ca6953e45aaa18cc0b9cd1d42332b53. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:04:19Z), 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/US23A1590377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa61b37c71a6322aca65f4e37c648598196dfa0cbaa065c267d743fc5e7c332b. 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/US23A1590378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9512b959a98724aa51ba75610445677fbb730a3a799e261c86df572e21d96b. 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/TCJPL2557745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9512b959a98724aa51ba75610445677fbb730a3a799e261c86df572e21d96b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPL2557745.