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 0x6baad8b6a456e9137199ebcc8e76800cd795df6cfa2c9a145e8d24aa49c88aec. 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/e40465fb-00c1-4109-ad23-bb7836b6dba5.json and https://artists.proofprofile.net/proofs/artist/e40465fb-00c1-4109-ad23-bb7836b6dba5.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 0x00d2ce655f4b7d183c81fbf5c1dbca549dd66ee6c83ec96d7ec0d1946606c275. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USL4R2030158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc143334be00f4e56982f44e2e70bf278b8a722b8c717f1b43a173eb52e13d91b. 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/USCGH2233290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4ee8d9ea7ea78bd564ab556aff8e39a460c45a8393e5e12301b0ff9761a6af. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH2257834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5281fafc69df0e4c2572701d2965b2aa3ee3e454a3ba7c768081379c22f8efe1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USCGH2233291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f642aa0b4d1400c6bb26089a7d78dcb598e360e1d68428b0c14418c665b59c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/USCGH2257836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fa4a054a3397be09554125206e88094b2c78cf52ec40a9e43af2d5c3e224cf. 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/USCGH2257837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99aeed82cae93bc2d6901965f87e72c39bfa05589a4737edea5a79b057a48076. 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/USCGH2257838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70f3dfb11aa0fe222fdba6dc29ec3d2ed02598e4fcfaba96f663271cdd7ae12. 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/USCGH2257835.
Will I Fly (Isidora's Song) [from "Hogwarts Legacy"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4a71fddf07a274787bc9a8245afe7e15625f3576ae711ee16c0a3723f3bb4c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QM6P42376784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00456efa06522a4d7d5ac11dec0161bcaea538b6a1cd8db85ae92ef127fd4909. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:13Z), 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/QMBZ92325943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91e938205a4cb1d31fc24f38d9d8a1181d222d31c40de80f88ef1393bb8147a. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QMDA62326562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2313dc6e36e393257a2f6ed5a7200228c5b3eb47b0f08362deb14639c6fa1bc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2343488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff548814dd29727441eee330a3bd40270907a1d4641bf5594e9c6b6da912db35. 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/QMFME2328788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879370a2ec435b561f99ad2381637625046ad2202bfe3acdc0108a79d11be10c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZMEP2221624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff696d0f25e70f1cc1f657de37fd5d20fe56bbbcd4e20be73737051a69a3f1a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMEP2221625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01ba095768349f6d362c2d2698bd25e76314be98514868cbe4a02ad203e6393. 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/QZMEP2221627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cbfc33162135c2a38f84be0849eda82b41cba9b0796750aed2da97c41d2940. 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/QZMEP2221629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a9a43b58072a1d799e38cd6ccbc2b1e259fd1de26978e6e496a51c1a08a9b4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:23Z), 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/QZMEP2221630.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd6539058b359f43b03dfac2e9c6708b67994897863f4bbdd9910ec61bc6670. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZMEP2221632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5388be2e1dcec907e2ad79bd375cfbe23ad74d05c1d176ed53720ae0932ece. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZMEP2221634.