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 0x17e72d55f5cb82146e24e9632dec0a57a984b07176ffb0efff62d2fe225a70e7. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaa8af16-9e9c-4418-af38-2502659f71de.json and https://artists.proofprofile.net/proofs/artist/eaa8af16-9e9c-4418-af38-2502659f71de.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 0x750286ea5b93560fd3ce538c8bc8fb16dd7569a10eb3e82a804668ff62afbdfe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFZ32350687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d242a2c216ecd442511df0ccd3dc20379bb635f333a2b1526ad9cf752babf72. 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/QZTAT2276308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bee93efa6ee089e2757c7e31aa8a1168bcfe67f4e9c363f0165c0f1f5d950. 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/QZFZ32350691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ad6474f1f7819432046f045f2a3137592a501a938eee6ff409a702ef89a5cd. 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/QZFYY2378370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea308632a4146ffc4c9087c2c2789541f0527e8fb4480d090c0fbe28342123f. 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/QZFZ32350692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a04703ee2c4e170a97d51b1f7af99b62497ebacde4270b776922e0378c5fd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZFZ32350688.
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 0x87907cdb928b0b24744a23a685c2efdc1c81dbf78dff06ba27bee9a2c6949864. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZFZ32350689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaac76c134488d4e7c81958230a929e0d7573336935f308e5c9f195e7cb90cc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZFZ32350690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee94cd6ab42da472b97c27e93e84f6a93bce791223d0744e5c2fd985313d3afe. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZFZ32350693.
Please Accept My Most Sincere Condolences
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2489d42636f6dfc7404daaa42acbbdbf2bbed9dc07fa860301c509d4601eb9. 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/SEVCK2000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edc38671dca75cefbb19517d93e159a1985be86f61ec5f6144b905ea7d60d4e. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/SEVCK2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43702b982e6593efcac52bddf77183199f0ed40352f09619dfcfa8177aa60041. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEVCK2000405.
The Sump Where the Universe's Filth and Ephemera Collect
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea91808bced60696e159135609b5fa1b5203c0653b29c9984a9b16209c4e68d3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEVCK2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd860b2ca0d399e912d1f5b98a4f8bf56ec99af341e234357a6bb52f7b5e69f7f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEVCK2000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bec9421fa6f05ff4cdc20699874ad6fd2da2fd2e8884db78f448b25667f3a7. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEVCK2000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fa035730fbf8dadf40dc715f80ede58bbd7a92db0dc8dbd76257f9e189bdfb. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/SEVCK2000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffeb1899c4a8605ad61ee9c05671075ca4770556e43a5538ce99c9ef3cb0025. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTBE2450710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6e31e453d9908b118d77eaf604f6870687e998176fa45707e6ba3ff0b07b6a. 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/SEVCK1803802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31e642ca93587c88ede5e6fd6e47ea42cb8ce7f180dd3dda2af6e9f5496ad49. 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/SEVCK1803803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe19a59914056f79ecd8e757e9697de759643c873b0678da7cb3a0dab38e239. 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/SEVCK1803804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46459770eaab6599880868c5cf8c82d1a338a8adcb5e87f670a092f791e35cd5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEVCK1803801.