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 0xb7149af27b41793d7f43d645e54ee70eaa65c6a840bb26c94d0ad384714f860b. 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/3d972249-187c-4526-8f3e-835fd906981f.json and https://artists.proofprofile.net/proofs/artist/3d972249-187c-4526-8f3e-835fd906981f.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 0xf497b23b4299f71b9472b153c1a68d28bf3115cbafca86465a238ad5184cab66. 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/INR211600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf05d033c4f11245a43d868e8a5d22ddb4ebc2d0e641e0acc60c14f419a8b719. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/INR211600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762890345df7c1c27a87302026f3a58de16f65a84836f570499b390933fd982f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INR211600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f626efad8ca9898fc7fb2f6f2caee09dd7c053a05773ac9d3f39855ba2305. 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/INR211600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a7ad57976e23821acdd9ae5af100795fa06bfaae091d8833e3036ff18a029. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INR211600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c67af29f074bc34c5d0d0c7024699d852a80f935922b655057229fb39d3175. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INR211600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968a5ce4d1dd170fff22fd027b5fc2fd82ca1b88b11cef70746cad7b118e8037. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR10S1855796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb930a0c7c3a48519edc265715af9dc846bf69abea14139dbf502c486682c95. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42179524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a2a9bcf91c7c49b931a31e7a8c7c7de809c33c4b20041e102409d14cc3a5b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R2202972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df13352258c0d0891b17cf42e5f5ccf10bbd8b6488f23b131be2dcea3a0ca4a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX202255960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb21c8f70e161d83fbf3434757567f626ba5a28ce371e9e282b5ad7f89c91e50. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INF051900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4200d6dcc7533c07c9358a5f86e7b96dd4012266694007886bb7842c96742aa2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:42Z), 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/INT1S2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3057f8690135b4a8e483d120eaeb2ef7a7d01bbb66fad270ea2b140ccbdcb7. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ING822400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ef118cee841b06e880fb597db197c2d769e8f6d86669ac3f369c14e60eabf7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ING822400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fb665386b1e6d346d5fa7acccacbd81219e5b9167c3fa3690630489aaf6e25. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ING822400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57da4c3d37ca67bf62e6a647c7160c10ece3636ec5e6d72a314e14fa64014702. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ING822400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30788fb222b1ce5f71967a638e9a1b9b2d69e42ee96c7b58460c6f66b9e306a6. 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/INB942515858.