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 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 0xcda5e07f0e08f865305a5e52fc9cf25d154797d655b3cd34b1e1f412b356c83a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de9b47aa-5e41-486e-8b9f-70bfcbd7b946.json and https://artists.proofprofile.net/proofs/artist/de9b47aa-5e41-486e-8b9f-70bfcbd7b946.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Harry Potter (Piano & String Arrangements)
Fawkes the Phoenix (From "Harry Potter")
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 0xe052f9203aa24a73679bb77e5cd9d739b66e4c7380dfd609d0d97b610f6ea348. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2596491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56009e525152edb8a9095e7624198713f4cef6a66da5d593a621130742a4f04c. 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/AUMEV2596482.
A Window to the Past (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc500147d45a89152c73179a3f9b232a7a41a92d63e249482279b2e7b209dc38f. 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/AUMEV2596501.
Harry's Wondrous World (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b6e12bb2b411dec42778ae5c912840febcc8bd06844c7fae02a29c3e3ab3eb. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/AUMEV2596484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef7f1fa90d73c0c99b60fe5d47962dc9d7f65c561f42245f66918fc71bff5f5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUMEV2596493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2bc79b813286aa87fba33b9ef8eed11732ceb94733c3758576e2be02b53d1d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUMEV2596495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaec845790bf2481eeba147f3a18801046d054c65e341c20ef7968c40751e1b5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/AUMEV2596487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde825f3a6e48637cfe1e86121437d3602525758284a54f42a27769c41c8cdaa4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AUMEV2596502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81940fe16983e0f41245b9eade6470c3cf7728cba98f29a8407a5e319d8ae2a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUMEV2596485.
Dumbledore's Farewell (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f54a11bc9258c3fe4d84dd857c633862e2e6691c700600c7d88a1e278d1ed7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/AUMEV2596490.
When Ginny Kissed Harry (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb821d4bf4b31da75f7a50b64e3ba8b03d3be3fbf2394378c5888e555999bafde. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUMEV2596500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdb9e8a14b47c637a4db2fcea429e005b61d27ece84520beb6dbbfc144ec6cb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/AUMEV2596480.
Halloween at Hogwarts (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b1839a1e6ee813b5a96fd6ba7a052d34f64a596a7e7ed198cecb7e5c534e9d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/AUMEV2596498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc273f53a14468dae3d4ac0d9303a5439792fcfde1d6646ad21c94b250992f33e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUMEV2596505.
The Quidditch Match (From "Harry Potter")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ccd53237b2f3611fa1f8f8195a05a42010ff55206ff487b8cdc34a0ff2afcf. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/AUMEV2596486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c8bdc45581c2d6bdb24dec71030aabf227355d1c8725b9b8394aef50691a50. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/AUMEV2596479.
Fawkes the Phoenix (from "Harry Potter")
Christmas at Hogwarts (from "Harry Potter")