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 0xa7d60716b790fe7b3ffb6bd953cac0abb6213591164dbf2eabab68c0e53aceb4. 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/64ffbb79-01a8-4d3c-8ba0-3042d079cb7d.json and https://artists.proofprofile.net/proofs/artist/64ffbb79-01a8-4d3c-8ba0-3042d079cb7d.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 0xed0216e651a4143c2e57a318d41f18633cbb211f9ab390a2ac0c3c21564a8f4b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEP551938597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52905ca249717f8b5adcb6457fe0825880a3dfa8674a40f374bde0bc4c1af39c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMFMF2205019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52905ca249717f8b5adcb6457fe0825880a3dfa8674a40f374bde0bc4c1af39c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:38Z), 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/QMFMF2205019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec78dfe25a1f03b1eb42d8b78db555901b8397d7362b7b8d1c61545d07a6cdd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QMFMF2204889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a805764b2c4534eda035c0c293d524a336f5574e680b65becb87ac79370c9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:03Z), 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/QM6P42335770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a805764b2c4534eda035c0c293d524a336f5574e680b65becb87ac79370c9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM6P42335770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a38c78455fb6c988047a0684ca0ee33ec42ae0476421b417c64f704912942c. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QMDA62308339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1247e11c48f37cb871e5c624eaed01463191c3bda1556be62267a3fea4673d67. 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/DGA0Q2347000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c0ef4fe67733bfa8af34515598f893c7836caecefaac6763def91d1807b583. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DGA0Q2347001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8b2fa684eb8830b9f83d7b08ab39a9f472dbd10e679dcc22f73b55e568ba8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJZ2420048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3a4c1f82cf0bfd1c49d79d142bb5355887cac8b8a0c7f1939abd1a5c4a26d2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0H2414026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3a4c1f82cf0bfd1c49d79d142bb5355887cac8b8a0c7f1939abd1a5c4a26d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0H2414026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67af5133d6c39d177bea440e6ce89572a7eb91c81ce28bc04502002e0929e62. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:21:13Z), 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/DGA0S2425373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9134cc415b9918f3f54bcd5fae39edec48a90474b271d44654296d55b46c0fef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0S2425369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa922298577b8421d2df5da297e0267ab2348bc9bbf0a06498902cf8b861723. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DGA0S2425370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4754866d03f1030525c5753cba1d28263e0f9fb35adee96effac9012b1244973. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DGA0S2425371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4564d94542a747a8426e300f08bad9ec89fedb7bf02e4b18b455623d7a897d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DGA0S2425372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67af5133d6c39d177bea440e6ce89572a7eb91c81ce28bc04502002e0929e62. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:14Z), 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/DGA0S2425373.