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 0xd0e5f1b2d818a711a8d031cb0f3d5a7e5bff8bfde1c1aa3001eed58299e506db. 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/9d045045-54ef-45d9-9dc7-7f8f99258878.json and https://artists.proofprofile.net/proofs/artist/9d045045-54ef-45d9-9dc7-7f8f99258878.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Parachute / The Green Man and the French Horn
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 0xafb2e67bea35becefdfe53fc0c680d7f73c394d7045966934026fae8f499d863. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA892400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c524ba7078958af5132bd763ceeb086f8e22a8c6f1f9bb55f757f5d5e68a377. 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/DEA892400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e418f5f6f0bdbcc8f1835baac5878a694bed82ae14cc84aeb50ee4b18363f6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEA892400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3174d234e054848bcdc4ad701415b8ed8449b789c420926f996552a574d91. 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/DEA892400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953d26ef273247c3fa5edc756736210b39eb3e0e83f98178d04914df3f5cb793. 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/DEA892400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31966fcd4d519ff3a429c070d03c314be94d4abbf5a08656ca4f6560933420c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA892400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e77a7c1f21d39ba558f599c2d4b5e4c3c080cb190ba9ab65ddde2f3450b3dff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEA891400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a41df6ca13c1352f9fbb11fc8dffb58c6a7294709887d47a5f6fca64da5c9. 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/DEA891400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7516c0a76a4fee1c87e83ce8b181b06a50b43bfd5de2f2158c412b99fc7ef3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA891400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e446cba74a90f1bd3a3a324df1a1f58794237393a7b7c4b9700e6fd20b6165. 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/DEA891400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22ecfd76e25a58891ddc5d864da0e45885dfec586e234822fd2f3cee62a426. 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/DEA891400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79edd5f861f827a7c1735c13c427cb827b45a041937983cb9ed17983088e8d95. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA891400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89badb9135b374ce01beefc5f9798c3cb01543da9ac2ce466510c6be53ad9c0c. 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/DEA891400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b4306c9cdcb57899f22a738a2faaba2557d648761893aa440f7517cd1586b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA891400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696b542c60e7801ca40edaafea272bfd0b489ecfb87840dfa0df2c2c3b1f260. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA891400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eb81683c600ea835016b2a866f671c70a4d4326bbdc39c8c5e0fdaa8f50185. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEA891400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3626b6f2b1af63d21b19bcb2e8ecb76c9c5601bd93ca93d5e6dff8c9769278e. 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/DEA891400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc9aaf67afe431673bfeeaef4548650369b14ab68c077c41ce29b37f279d6d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEA891400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603deda7fb1c34acc716324a7a883ec068edd0fa7ce6330dd78aa8096184b438. 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/DEA892100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1361d3518dfd555a39d3f3c95e9bb8f3795e9d1df293ca07ca175217a46de696. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEA892100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcb3bf5c1fb895b3fe1332367e9d2a76efc07442a31203e421770266811454b. 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/DEA892100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0be09b0236626798eb0d44517094dc8e71fcdc6e09ea30a2fccdfbad4bef5. 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/DEA892100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66f09fb9e526deb1dc284c75ef656586868f561892540bc8ad7ede23c5ec882. 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/DEA892100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910c1db76bc0e239ef6488c3459291c5dc2bcb770cfa7c288aed635ddbba43f3. 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/DEA892100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e311099c559787c8e29b990f563c3ad68f2b4bddf10ed35e29e74f6e2237a6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA892100206.