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 0xccce06b19aa245d40265f63d492675ee4d7de913f9cfe66e8e8d516825a99fbd. 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/6a650d6e-6a26-435d-af2b-44ab531fa100.json and https://artists.proofprofile.net/proofs/artist/6a650d6e-6a26-435d-af2b-44ab531fa100.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 0x6494afa26d547cf0381520bc08d02c1240126837a9fd34352e88fbc335fd8d30. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1162231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1f606ce21de0cdac9fb2e680a133ece6c2f9413592fe19113aa9d97116156. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ1162232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cd3d961841e17de976b369afbcf3af06d4e34bbe6a7a251bae5e4dd78f6006. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:33Z), 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/USCGJ1162234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca65b148df7950dec7bcb0a911fa6349f0b71af0e1141cdab33cd69532aa8c1. 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/USCGJ1162237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702c3b3c7056f2ca20d47f2585ab361c6ccb19d6f0806b3276d6c295506b4b14. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:55Z), 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/USCGJ1162238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfb533cad9dd50292adbbb1d070176c046e79800b5e05ede3ca5e7bb3ae7bba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM81182739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d632961cc5a1fd6ca7873311dbc61f34e80bc441300c583c502f268bbe7f959. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:08Z), 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/USHM81182741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc60920af292a7c11e68a1034570bb349f7ac2a697e719e15f60b5ce0ebba0b0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:43:48Z), 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/USHM81182742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ddea0eab7d88d6b3b17aedffe8a0b9bd3003698ad05cfb3327b1acefde634. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USHM81182743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f87a8588b63da0a10ca1eef01b128ec5a3d652367106ba51af9aa593f4859b. 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/USHM81182744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9c94b78c1b5dea7a8122f46e93c75eaeb57b5297f989843d0a77428954cc33. 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/USHM81182745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd514772e47f1d4664464245ae11e289e1b48f2c1695ae47620dac34a93d4af29. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:42:50Z), 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/USHM81182746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0588fcb5b1d9a4bbc83576a5dc43f09ab030155607a1eec92d4b4719642583bc. 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/USHM81182748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fba63946027da104b78326a05d2f0b695ee43dab65ea9093458f85482743c5b. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:56:26Z), 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/USHM81182749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc22a9692b3f50bd9d6df78a603f18fc73902c4408b083bd0ed2df26eb1e12. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USHM81182750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b89f886b7cd9431a7d13df4de2ecca877075eddda4d5fd39a02f2a7720312. 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/USHM81182752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb3bb2ff75c54a97756a16051116d21a62fd27aff11fc88e2b9b7101f70abf8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:42Z), 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/USHM81182754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033c774b78a504dbc244b95694db129f828ba59b15c1ab7474ffc3ae96a775fe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM81182755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c697b5116c5f03c031a7053ad3789a21760c43973488269b41b42317497784. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:43:54Z), 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/USCGJ1337100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9e2727da40d6895e645266bf89129d7849432359bd08b39c28902e019e514. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGJ1337102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84271ae8d85032fae0df6fa335f720b14341b0484e497c58e56d8d1081df80. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCGJ1337103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d3b61b3371ce12e3a70d23812cd1879d77ccc80532ec8cc77be963ab944184. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:42Z), 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/USCGJ1337104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633c8b739fd75611d30167fdf8ddd29fbe2462d949a5d89f011ec392193ac59e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USCGJ1337105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd880f55c9aec28723ed0c7948100f43fe8a7756640b4d3b956d9d79ace452a4. 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/USCGJ1337106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f7b9a7e03232829034f28f1c4e83ad1e3973abe33d36ec91984d5aa885e41d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:42Z), 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/USCGJ1337107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310939223d262318e4bcc370f3919cd81fb85c552f059ee930f603e05f08bc2b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ1337108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90222aa6c40df75e1e3f5e5c95a5f8cf8a673e3473d3a678884329aae3e6d4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USCGJ1337110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201b82dca4f341578b5a5a162fccfdc5abb44ed7d515c8a2b71fd7f2308f549f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ1337111.