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 0x0e9fc402b8be0791d6c707d4e6750efa741f516bee16fa5634121d456b8d7b10. 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/12672598-d549-439c-b9f1-a00d42b50b6a.json and https://artists.proofprofile.net/proofs/artist/12672598-d549-439c-b9f1-a00d42b50b6a.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 0x4850af2bb8214e2795919ff0c18f877d6a729e9bec9ce11859c03e3f606d27db. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USTC10782320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b08cebb53d71042c39ae8080f8f76f04f7d2868781b573358c9708fcce5139a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USTC10782328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89a9424dd41eec7c6c401f5d2aa5ddcd5f54fa575977ae15cfb10475775bbed. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCABC1162205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bff6c4e77a14a0297de7b7469225a5a134c9cd79b6e35a42921964c35c00fd3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCABC1162206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b5b41c7561b8f380c09be19f242306bd5b49fa8732070b12f47bec1aac4323. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABP1352741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606cfb2d1573eb681c8f7faba08ad37367c087ae95badf172d4ba0235f661e93. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACB1434253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80320ba30bb69bfa5e88c8d6b6b3d39c70775f5c45950b8c36a4049b6975329. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCADC1737695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b81646d9b83bee5a5494e93bb7087287b32b53401ee725efeb0f8c21120d1. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/TCADC1737699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e49484fc1bec6e3f8c228aaba48b7a56559c27fd587d24931c22c7e02659afb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADC1737703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409966ecae426cb2624a357092b09131fdd254d6fe3c2850a822018abeccd91c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCADC1737704.
Spread a Little Happiness (BoyGenius Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f761588bd963e1bb9235d53a89218703bfa41cf522333d0255a9958222504f. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZMER2187471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925ff92f4bf4d1181e188b774fa0fd947d33c6748dcf3ad703e8087aed56d154. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMER2187473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75268d351e17dc757148e5e80e68eb101e6ffd21122977c095cef71a4aec2be1. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZMER2187476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a19babe5191488ef7f37c65256745b8b443c82afe21bc9e5b76d00966085ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYX2325416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef4109241cb16fe0c7136b2baed11f93bba433b8bb2a5f888ed21f6292d1808. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWS2302323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c38551a8de8a844a140f8aa0ccf590b48aba3a0cdf96976dbedb26879d4bfba. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNWS2302324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fadd6a9023e3ceb78c8ce80f4e3d0225fc1336c5ed03186c92f422472d2848. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZNWS2302326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffbdc48574778e39009b72ee33bbf53e88f560938dadee3ab23450b36701c63. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWS2302329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e0d34ac15ae9aed67268d18ac3033e7b0d373a0b2d7511a030fceff0edff4e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTAZ2414573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf486c584f72587d8a5d7851daea7d3c3b78824c9718a1cb0c3c2e69ae9571d92. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZTAZ2414574.