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 0xe13cc7d244fc1d1f7e4962c48b39e096de2be3526870dfcc01ce6f45362ac6bc. 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/53c40b9d-ae48-4805-bf34-2331a5bf9314.json and https://artists.proofprofile.net/proofs/artist/53c40b9d-ae48-4805-bf34-2331a5bf9314.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 0x1a9da65ef2ea4faf47e09a6d98c28905a0f1e0e7ec00693159350ac2ffb99a9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFE2355585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f4293f2d43f46ca7f7d44536387335689cda45c3dafe322fc0374236d63ca1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWV2380145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2099aba7b8ada87117d1bf405bcd39ad2cc5e1c08adff4d9efafc8d6de76c266. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWV2380148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b6f0cdd56382b3720999d5e096b19d505f534b1dee6c9336fffac9dabfd153. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWV2380149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d53a740153ab64456351e803260d3d66bf06bc217d22e221953e163bfb125d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZNWV2380146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c08f4808e0f2c0044a859c58c5d56596066e66b966f4d7b1950bc95e5f151. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZNWV2380147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2414f9bd05fd5b388312d78d770658b3c43bbdf9450ba09a61973d97dc9dceb7. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZNWV2380152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358a468f566f2a2d5151f5bba19e95bab1c5ec8154aae9d612fa02297d121d80. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZES62357137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da8f45a97d292ec3e6748297999ad5603ebedc89b1984c64baf013a429c90d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB42453150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ce015cf5a37ce475e000788cdbc25f5351acd450212580e5a21f3080c3a020. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBD2428492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba21ad9d863acd3bc1380215ce509c0787d0b720f8d50748569f1f1db3d5f8fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB42408858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64df6da402107db32aa8ebf8237b90d53ede37f4bbe490e7ecbcd586d36899. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLR2440681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5046628a7f53af88b76798c93b6d38165c6db7ade19c220bfe5531eae287c5de. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA62483625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3620dc5fcdb05d2d3fc9a9b7264272f59289ddbc58efced4ce77b002dcda50bb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6H2337264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ca2e4edcbdd14ba54c885cf95e2b7827673c45da454761993c0ee3ee9aea0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1568278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5751d35626627917099bdf497e90a9e8c25460aa4920d8fb5e9970cf6579567. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US23A1568279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a578e5135fd0f05eee36abecf068b83efd8f7b64baa368931a9b7ef52f7365. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFG2362458.