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 0xdd527207a1e44cf1ce7d5f39b1f40ff25666b0c3b353a861b8a480fa8048fb4b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/527044f9-4461-446f-8d5e-25279b23c81a.json and https://artists.proofprofile.net/proofs/artist/527044f9-4461-446f-8d5e-25279b23c81a.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 0x98c7dba5fd90c4fcf516ec40d61e0e487f22995b35fe38a59d9f262a98bb6f48. 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/MXUM70801084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5049f9c4fe40922b9863e1ce2ec9cc36cc3c210e77251f0b4ea206a1a9d23032. 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/MXUM72004313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd602ef7a97eebe7282ed3ea02cb82f25c59d78d9cc2e03b13383f696f1e723. 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/MXUM70801191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3a9c8c6a53c93ece1100323cc54fdd240541df9ab9835980697aa6cfc7755. 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/MXUM71100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42921d0c1868e02d70173b6d33c9fb474a21319a93cd256c35ddf62bbfbd8c6f. 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/MXUM70801186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fae7bbd8f3bbe8a902c89b43ebc96e729b888117ef35f80b8c319d772b957d1. 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/USUM70987384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf338fc80ec5c686ce3d480bd51368f38de72fd8539f5e9162c42e2155eb9ad02. 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/MXUM70801178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2818094a0340ca5484880374349709ffb1a596ebfd7671d983fb0efff706f57f. 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/MXUM72004285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3564e0c13ab81371c8b01352af0fde9250e504636750d1315429371ee9d589c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXUM70801085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2429c7f64db84e41a03cd803d5a77f6d3758565cdb22d82bd6ac1809c3ab6d08. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MXUM70801180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2563424252c4d14c66c8e13d4c053ee922bd353c8cb709ed7b628eb13c2bd7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXUM72004240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13a82959d1fec5b9d252384ed189ea9b34dbc5f757e50c6a7da075795a983c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXUM70801182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eaaf4c2685bd13a5fdfe420536be4af83430458ac95d98c905921f67f981ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXUM72004314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5434385ed38d933611b561c922bc5e8a39b2cbb6940463a04a652b69be6f4850. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXUM70801189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7e26ab8613185b1c2abb0c96b4296db1179cce2202ef2ff08a5bb6d1e33f0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXUM70801184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae8f8dc3d52568d2d873cad735bb61873be390171e814651c766befc7340a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXUM71100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca3a9c8c6a53c93ece1100323cc54fdd240541df9ab9835980697aa6cfc7755. 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/MXUM71100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24bf44b815e60a8bedb2a685334738926c2069cde64d79c4380368960859636. 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/MXUM72004230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2563424252c4d14c66c8e13d4c053ee922bd353c8cb709ed7b628eb13c2bd7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXUM72004240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c41af8452a42d9329082c50e04a49cfa7c1246ea724f44c0032026c4e5c155. 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/MXUM72004242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3548853f0de49bee3f7a635a54ee4bc68fa097ab9c0ab714b7d174226a1229db. 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/MXUM72004246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb4a77dada5629a92ce5052a1ce9bcf529e8dde332310ef58e11f18603efdf3. 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/MXUM72004248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1452336465652c217fae7abcc33b476c7b0765fff273753c81881f63eac184d0. 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/MXUM72004252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fae7bbd8f3bbe8a902c89b43ebc96e729b888117ef35f80b8c319d772b957d1. 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/USUM70987384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2818094a0340ca5484880374349709ffb1a596ebfd7671d983fb0efff706f57f. 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/MXUM72004285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ab2ab5873173e4939219fba2fd7fd7832e5f3fa5e01be5abbb935121117f1f. 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/MXUM72004296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5049f9c4fe40922b9863e1ce2ec9cc36cc3c210e77251f0b4ea206a1a9d23032. 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/MXUM72004313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eaaf4c2685bd13a5fdfe420536be4af83430458ac95d98c905921f67f981ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXUM72004314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0f914f5df36963d20f8606d012a01b1df4969804cd45c9d4dee1479d432243. 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/MXUM72004315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8ce95d34868af3444392aeb1b0b77abf506a952222ec8928185b764503e35f. 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/MXUM72004316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fa8b6815e5cae1504ac8cad91d335b02e4b47850bc2173825b880437e5260a. 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/MXUM72004317.