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 0xa79726fba4bab45b8b348d1468e9989e8489871d4b1da6dcd9f3c6e4d9dad0e6. 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/a2e7f6ad-428a-4d05-9c82-fbca0c215df0.json and https://artists.proofprofile.net/proofs/artist/a2e7f6ad-428a-4d05-9c82-fbca0c215df0.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 0xe3856a1400082284f126a1f0efe7b44eb6ded6eca1fe7279d877adfc72f98cc9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42318054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7656dda1ce58ce98e9fd0c7e5650b6d04a978a49c6fac1d0322e406657bf9f4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA062206074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10359865e3fee3c2628279be1a591ceac95e97f73222ad08829c82d8b91e0111. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452240216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd461bf3a07ea3920e059a4aa3b91e888ad32afe36dd438d5a0170dfb083a239. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42318055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd47981d7994c2015bb3e432ffb9558a42a50e93cff86006711d446c4dc8d82. 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/FR2X42318056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1735e8a41bfc3b6102ec734cb48b8e728ed11c97e66b04c8c03c5587bf3be9a3. 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/FR2X42318057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65314a2a2571767a05678103eb698ca3734d3c3557ae260ddc4ac8b285cb866. 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/FR2X42318058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40252297951dae4de37c813359d641d7b1a536076e937839566f5a643781b547. 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/FR2X42318059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae08a05980fd85013050026caeb1e75f549f37715de874946e19fc28d40c0c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1808125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2850781fa5db813a9d7c2b7c49dd0fc69d806ad6886d056a6f736079e97b3127. 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/FR59R1808126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375eb033b20aa4c493604be6ff67907337322fdcc0b8d1739ca812a2103ee295. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1808127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe243575d1fed220b41158b9f9d55b203f1b07ff9e0203774083d6c43ceb98fb6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1808128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a19ff57988c113fc5fd9c9813909ca267a371386220858665b66d9535c3b31f. 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/FR59R1808129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d54be82796da523da5d5a6d0e3761364aa3e6a8c7ccc78cc97f1b6578ee5a8. 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/FR59R1808130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd237c3a9f8b414c1491246e28c512e8e36f9c6fc4095c97fb3c41748caef10d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1808131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27129fdc6e6ec5be605dc4115bfbec1f850c61bbd5943f04e387d54d39c241ed. 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/FR59R1808132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d34f13efd5b61fcca56bb96eb201dcb65014d83109f0344b4e37f7eda51b7. 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/FR2X41867077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb808b1d2e9bb63f8043a376be26eb0042603d5f8155c69ee9fe36d405c95017. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S1650070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cbd28a238601bc6a3466a82cbd2874c39cc30ddc1538bc8045aafcac820654. 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/FR10S1650071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31119e64556c3f0bc8b5832c7ca3ac54e6987f6e8259d21c810f9164bd0b1173. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1650072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b15bd2670b503449db808d9ea97c0a5e31138cf93895726fe0b10c4f8715a. 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/FR10S1650073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd9d557a84cde034d92e6ae5b17b65813560bd23f1ba5d58c2b3eb810a7252a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1650074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1317e6395e0ee7f3453aa4a27e2f568f1bf4610729a885f6aedf66dc7759b44. 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/FR10S1650075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b899a716440e397f3ebf31da591bd8bd08ea0fa6d6a8aaa1b1b6be97982a2. 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/FR10S1650076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d6a9455e37d46319dbc4050b6b70c002d9cf3c0675ca79da7f86c459df38a9. 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/FR10S1650077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2e44e9659cb3b2333592b76b22461617958036a6f74bf495f123454a806bd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1650078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993269b0c0174a0b7ef73dd5562bc41dc4041bea98b9a4d9424cc0cca4c94a60. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA052455811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5dfd470ef83d5068d77f42d89b95c7f6ff8810d5ca10f2940261bc45959348. 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/DGA062352700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7656dda1ce58ce98e9fd0c7e5650b6d04a978a49c6fac1d0322e406657bf9f4d. 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/DGA062206074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10359865e3fee3c2628279be1a591ceac95e97f73222ad08829c82d8b91e0111. 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/FRX452240216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf037b905fe206d060ba6fda9344cef2e1686e99e6e70bf0f9ee9eee213c5a7ad. 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/IDA172230168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f236ca81d1e4d8924aae4b7601d07104ee241ba386cde77b254b5fb86f3d785. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IDA172030249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76821ae59895f6c2251e5228dba365b7d838c3fb758900acc3d44e0abfef976d. 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/IDA172030201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189e4002e262d70a6cb0e65bc09d71c63fad6872acc9e7793ccae2dab95cab5. 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/IDA172030042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bd7a52dfe2e03db7a7e49962d7a48c7398986697e3f8e64b809e37f23c2a1d. 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/FR10S2076000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d34f13efd5b61fcca56bb96eb201dcb65014d83109f0344b4e37f7eda51b7. 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/FR2X41867077.