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 0x2b55bd3ba1cd4eb24272b0e9f3c7af5b6e6e978e4946841e967eba93061a4908. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27cb765a-b928-465d-a390-c843030247e8.json and https://artists.proofprofile.net/proofs/artist/27cb765a-b928-465d-a390-c843030247e8.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 0xfaa0a9b600367137662aef21b548421a2a34fefd050390b7b09990c8893a2641. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/MYNO11300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf57482fc4f975f2e1534c3ed24b08319e3ef99e753108b1408c261d05911df0. 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/MYNO11300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b57af7faa5f9ccd9cf625faa3a03c455122492f31a0971cfc8872fe5316618. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/MYNO11300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f89410f80d327b534a5129e0067c0aae5052178bb790e2b9b01de4bf2c81e4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/MYNO11300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9527b1f0840258f559b0d6987233d33b48bc63fc1ab2c843bf6cd1b4765c5d53. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/MYNO11300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffb59fbca271952fe37d6caa56baa0e8d899637494755f19028ac0852fc1da9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/MYNO11300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dd0b88b01ec55e7cedd77762008177f67d5a64f9e76a6b16365d5d818abf83. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/MYNO11300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bea96f073436cd836e32607d87c069c1fe1fa00b8636fd267480b2a7bfa9d0. 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/MYNO11300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3746d07948cb7895def5c828470fe76715aaf1afd8e3ee22aaf621493277427b. 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/MYNO11300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79c16c44a040f2727c236b66cb6081275c06a33850527fa012517976598825f. 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/MYNO11300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e66c57c8165718c92b610c2dc82bb9be85e5f9cbda94705e55c54f480fe29b. 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/MYNO11300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af1db3f8204f783017d761b211ca5d858e42429e8ccb1bbfe4cac48c08b228. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/MYNO11300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eabe83590643e46ce3c6239564b6745369aacfcef0f33fad367fec67def561. 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/MYNO11300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b26bd1fac6fcbf282c875721a54b47f435904e6e1ab8397ef3b7da2c9e4afe. 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/MYNO11300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc27ff8de1180857df1c335d14570b8c6ae2f6c8cdb58c968fe845ecd5b48bc9. 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/MYNO11300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e98e8afb9f55fa9362a4ac1a2b815f2377acefe863d9fa351edea4704158b99. 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/MYNO11300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5886fd41320dbf50fb83ea92d4ad36d26faf5d71bf9490e4628a959e8bbe0c1d. 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/MYNO11300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204ebcfaaa42805fb639940578270b85cbd191fc18d56a8ffe36b07d4ca9fb7. 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/MYNO11300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ade5189455b9f17d4faf534a792172f5636424bc024b68624daf3d040e229. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/MYNO11300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1589408a566d5f39a3dc47a1c42cbd7afcf9a3baf72fda0f4c2de148544942. 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/MYNO11300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425dda00cfc5abb0a1a1b5173618087d89aeb7fd001cd70042d17db4e182687e. 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/MYNO11300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afb4928e268a3c26f9abffeec12145b559ff91d53b794a604e8447c7e59449c. 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/MYNO11300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6a6ad6cf6284eb48222e8055e39c69bb701dd4f45a6691b6661458015cc35a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/MYNO11300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ff752ba813fb1b6c00e5c2d9b365042802ad36a88afa7a0dd6ef1db0ef1617. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAEB1949349.