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 0x8dbd54845c224ffef79e6dfa362806b23f5bc8f3cf13ad3f0c7efbdb14130b3d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48c8e558-18cd-4407-a5f4-694951f33722.json and https://artists.proofprofile.net/proofs/artist/48c8e558-18cd-4407-a5f4-694951f33722.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 0xd51edbb8720256321b382a351e07a2ff47f25e999709d7f8587051ecb15b920c. 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/QZMER2450818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237541944d92029d211a97d95a1edcda7eae6c027c394e0c155137a26520e99. 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/QZMER2450820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05d0a02bede7cf80933f38200330c16dfb6c19d0de3379127745c66d2370e2. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMER2450814.
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 0xf9f887c56def0ae470b131c898ef1065a61f53f919749dc82bce151f15e504fb. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZMER2450815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc5cb2fc4aec89b92505bfa46bffe14a135a319717b046e5379ab5264393e4e. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZMER2450816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c90e1c4d6e945f0839263c70f098688bd919400279b6d5afa4faa10e97bc81. 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/QZMER2450817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc7b5db596b931b76fee43ed222d8fab4964e2373802a98da4fb9c9242333c8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZMER2450819.
The First Rainbow On Patience, The Planet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb72d23f67f1a913153efdbb099366fc9a59a29cabdfa90643418fe87aabeec. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZMER2450821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb2c8d2bd0a49d448d265233557b4daaac89efcd06f8851c480513a3fd60180. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZMER2450822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7399aaf84afbf2c2ab5b914c9e065997855985866128266ebb50c9b5aa355857. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZMER2450823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938a3bf43bbc554e71957c63affe71869109edf714fc2f9c650e433c04e429a7. 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/QZF8D2100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146cf896d1f1ed4c19d27ccf0141a9f323663787041fa979b811a8aef70a29c. 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/QZF8D2100325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cd3a302bedcd27a4aa6a03e39b144ff9ead4aa9b8ef88f408f1f5470d86b8d. 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/QZF8D2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf95dbada42c30ff1339cabb5d77f83518b3efbf9c5a27257da6153b1cd9b30. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZF8D2100326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be55188fdffe2b26bdd597301674bde6a986a7e5239c0ca72fc3708dca9f979. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZF8D2100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc96b0a2e87ca2a26dc73d9465403f87a283666c4ae81be02a6849e09528e40d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZFZ32154329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade8a46b44bdd373c72e106308a336ee932a2cdd2cbb4b6239608b0d16d0857. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZFZ32154330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c25da32b06cc7add8067f86cb0597562619f14c9f11dffea3c86a5b56035c0. 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/QZF8D2000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1548dcfd0b2067333469a5b4dedbada897ce3b96bacc338e4adfa45a03fb1228. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZF8D2000265.