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 0x248af4bfd7427b45ae0c8da63bb23d6f2f4cb09173619d86a99a72662f90df19. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be6fd17f-ee1c-465d-be7d-2bfa9257e8e7.json and https://artists.proofprofile.net/proofs/artist/be6fd17f-ee1c-465d-be7d-2bfa9257e8e7.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 0xad7f5210454313767ea8d007f8f2c57881dceb1ac9a1f75a653afea434ed48c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWY2129509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541902e0b629e583c489689b7f0484bfe94aa5e64b92e2525102b40c7fb4950. 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/QZNWT2183155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e762a6eb9155b75df3cf072d34119bf5d8255045f942bee335e05f40f9550c8. 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/QZNWY2129511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80021ce2ec97b7cc0ce18c80650f52de2ca4da57a0394c27a085573cc4c83249. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWY2129513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd263cd2b82e117c30b73cf6b45a13cbf9f888df37e5a3f0fca45cff0acda6f8d. 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/QZNWY2129515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a57f55b1d6ac9b6bb9a23c8a954dc2833db04ad4a4aeab1b9161ae09986f16. 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/QZNWY2129516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5941b0b0238e34621a1b14247ad8a992ebdb1102c8fed71c22fdb2d6fa621b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWY2129517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5697dda7848fb946fea680ff2af085b8d897b3fec6867ce0768940125417673f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWY2109098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46beb467b8bfce565b8548f56ec7577736657eaab47b4b1473c44e0d006f6f9a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWY2109099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14231d6d2292878d7c957484331e4764e63c4ce04b77f551269feff3023c0abf. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:20:48Z), 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/QZNWY2109102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded389433241d6e5903a1d1ac2e83f9a312608aee2eac1bb4a4fddd38e54842. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:08:16Z), 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/QZNWY2109103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6493a2be284affbd41bdf5c96334eb03434d29e4a0c88f74e60c7a072b3603a6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWY2109108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd67ee78ff5d004c4fbd413f06763b07a912f523b01928fbb37ca3fd9760705. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:40Z), 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/QZNWX2104750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7cd8626b3b1f80dbfe2df983efeefcbcf3e5ff9c132eee3b7416ab110059b3. 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/QZNWX2104751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3604788b27498e93d8362fffd3a15be4c005a26924180d498aa6c599d96ecda. 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/QZNWX2104752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d990317d774ce141bba2ff73665987aca1f0c8e9cd469aa27f3f9ff7e84fc6. 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/QZNWX2104753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b7a2e198f015cc6bf22495d860c3c08efe08f2981ba73e0d73b2b8eeb7286e. 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/QZNWX2104754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb25d9e6ffddf1814786f74bea467a4692e97e05504cf69855736e52e1460624. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWX2104755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202385461a9ca9885f14e55333019356668ec8102a9ed80950f6d0d57d4147c. 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/QZNWX2104756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be8901aaa1750b97b37bd6becdecf3840a34c7ca2b6e4d1054a067e8611478. 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/QZNWX2104758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e38e28466c9d2f78b2560d1375abc224d7bcc5358cd02a948efd017c46f8d5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWX2104760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b2b1c95e8017175248a36c0beb65b4238d9888beb09c5d5ee8c6d93612dda. 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/QZK6N2372476.