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 0x7dba6e8a09b59545b8d339a700873c401f8c674bf152c6b2f58654b57a4755b5. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/527ea67d-8d1b-4691-9fcd-59f877629306.json and https://artists.proofprofile.net/proofs/artist/527ea67d-8d1b-4691-9fcd-59f877629306.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 0x0f12a09f56fc7c89a2a62ab9da019ac3ee634b70aa67a27f1bcb6d2ab1cfce6d. 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/NGB5S2302263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c254424c0a783b8c128cdf66072fe580d9a24b7f721c0b48de9e18a51f5212. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NGB5S2302264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a81245126c8f2c279c53252051eb8aa0eb4b475656b0f5a7ed1e39b1ebf9a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NGB5S2302265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7a38712e75ce01ce22baae23ca6bee0e8d3ec74d05aeafb86a17d01434d2a2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NGB5S2302266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16536b3c02e27dc61dcaecbf0af767872cebe40eaf0c33b63720e514e771957. 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/NGB5S2302267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71b1501eac06642407810bb6745269abaf94ef9236d92021255392d7ebe38c6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NGB5S2302268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7e4a7cb44891931419051474d03b9a535ae68e5cf8bf681a64ae380774239a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NGB5S2302269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69696b1fb308b792f85869ff38df45fb2809ab60755177cc16f60b429be34591. 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/NGB5S2302270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1726f05af37c0aaa0d687815bf14adc94d0e8196650c9e95c5da4c015eabd85c. 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/NGB5S2302271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651de0265e2dc351f88acd82596ee1658188c77aef352d23c13492982bbb70e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NGB5S2302273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa18b26e7250d8896b9cd957db3181e504d58531b389fcb2a9a750df4b674e8. 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/NGB5S2302274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca96609734264613230e4122628bdf5baf0594e7cecb514810823caf821164. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/NGB5S2302275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf7754f07deabcb073c804c64c58efaa161cbc7dd07c9172706e626fc5a56d1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NGB5S2302276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3cc22b5c3b1e1901e28a2ac17455304f85c199202f75f341b6a43d4f67ff02. 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/NGB5S2302277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c834029bd58e373cff6df2cd27652deeb4fe0cb79852fb22e372ff2178579ed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NGB5S2302278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71db6ae6b47525065f358635e21e2c8be23d26daa1af1a513080c36cce95425. 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/NGB5S2302279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f8aeedefa2d3e3bb1ed23dada1920dd1909ccb153cb64c89db6f55258177da. 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/NGB5S2302280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b91868fae37310311fd9ec1a5705e87df94ee52a51c244740ea4e928693b4c0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NGB5S2302281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de8af29c9aeb6adad3a900ae8814e007aafb2e7e877d6b4b68bbdb327284598. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:49Z), 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/NGB5S2302282.