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 0x3ec8d3b5f60b6e8093ad4feae6a8582ddab18b9ac8c1c1a4358e2a91106353c2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b64c35b7-15da-4b62-af27-960a51a94784.json and https://artists.proofprofile.net/proofs/artist/b64c35b7-15da-4b62-af27-960a51a94784.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 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 0x7b7a7d8273c9431299e763e4c1e07959c974d7ed16222593ed180ad1a67fbe77. 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/GX8KD2491560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c50941e752e9d98bf5d816135c6998bd6ebf50d4564192c88137ba1fe45091. 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/GX8KD2485326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30807b45cb41087af618e6df2329a2addeadddcd52d7d503db72803bdaaf212. 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/GX8KD2458318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c9701caae3155d1585675854f687e48fc9489197ed7323d411a800727a2510. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GX8KD2418930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb09b1ffdbca566ea23156a5f44829cf326a9de1c51aa987713393fbe611d51. 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/GX8KD2465512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b77cba3205ff943ded9f709dde32a82b8536c1e6c15d9e68d69ad7deafbd5. 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/GX8KD2499428.
One Person's Perspective of an Apocalypse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a8ecefc96e7ae4bf46a4f1247f9a8b5d8070899449f8c58d34fd784fbb1fe1. 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/GBSMU6354383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb61a1151e22e9b25dbed2d5ab6920f8858482129b45051f3faefe9ed2f4bc12. 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/GBSMU6354384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc361e2cf4851ebbb458d57ba45589ef3160437ff94cf035e450b5ed5f4ca9c6e. 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/GBSMU6354386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d748bc29e941def7038faecc1b729683821d3eeadba6a2dbe052dedbb724e3. 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/GBSMU6354387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c343278f7c1e121988b539264e306b07eb6065b9ac429ffb019df6c0accb16b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU6354389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4bbdadb43742efd4dcdf0b735dde95a3b653a995216bf38117343d7833ffc2. 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/GBSMU6354390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb21f7640c2e1cc4c2c962f06b31a2a54776e1e8f7d1ac1fcb2fe3aebd35447. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBSMU6354391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51344bb3e2877ac0432021ad3790e92b3551325f9a962062f50cae31964ce73e. 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/GBSMU6354392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd5c050a0b7b6f927cf1c8e4e6921d014a4ce8dbd8278f3190c6add62655f0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:55:22Z), 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/GBSMU6354395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa8461cf81956bd07dcbd16c2b52a448f689b720968007776d6748c6d4de61. 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/GBSMU3863071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46b4ba6bbacb9bf935cc5a435a81b6e0aaa6b2371c97ac1e0577383de2fa26. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU2370234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d92ca61445ae453427f5d5cf937675e360fa2bbca5a935cae907b9be15b72c. 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/GBSMU2370238.