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 0xbcd93628477d0f39857cd3dd1e1e6bca9b1b7fd42493fa29796fda5cdcbf7e4c. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0252ca67-00dc-4dbd-921a-457e9aa2d03a.json and https://artists.proofprofile.net/proofs/artist/0252ca67-00dc-4dbd-921a-457e9aa2d03a.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 0xde73f0044b93ea27a4716787130ba4d5f70127cfc17098aff6d2717eb1f70849. 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/SE5IB2000880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51b0c3f1355b578856a559508f28661fc00ed9c61fcab21c5d50dcea7f22e8e. 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/SE69Z2415303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007a760aa98c11f9d5b2ceba5ba717d38929d542ac49e4193c2d2e0632bfdd17. 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/SE69Z2401332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6606d87da5f21fdca5e74f4d5d14ccf19e19e25b426cf0b1ab9e470b8fddf871. 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/SE69Z2405588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b954f566fad867ccf4dccfcad6ea571f0f4ad6739cb5c0438b1e89156083082. 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/SE5IB2341831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb114ced3c0298ac34fe46e49f63ae1faf4ce589162d3320c05e5435c8a4f74b. 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/AUKDT2300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ffb52f93f5d1c004996d4a0f357d4d8467d1e308e78269d876b2762daf801. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE5IB1800851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36b7ce39668f34423d151e66ba3791756802793542405f2ab8c2a9a8919a662. 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/SE69Z2415283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1f026ac7eeb58308a95e203a478af39eb37e67549dc8405a657c5afacae0e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5IB1701627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2acc9c51accef336f6438cdb313d3a0e55042490c1e7200f975c758c80f17. 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/AUKDT2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0641c06b80401d7ec6f648cc64b8bd421dadb742102c53770c355a463a544860. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5IB1800254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05ef82256d21187406cb22e4e9ecf8268bc57350f3e09af37921f50edadac04. 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/SE69Z2405598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ecc5258a38cc649168b3a3d964dd6e2fd465f5721724d3a774c4e26390c6a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUKDT2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456373b9e97cd3546802d134d4a31e0648f9a95f0a3fa976860a48b3afa6a0d3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUKDT2300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642f8f089bafbfb502936a22e7b94f64eaefa82388e710195d59d32e0667da78. 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/SE5IB2338427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7408910c19ba07a6ad19d3fecc51d601718179bc2e9549536a7c94c55e0197. 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/SE5IB1800832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91079c95e41a96348c2bf75b3ce431e23fb7c8a2905e0c3b8029687b4f16c9. 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/SE69Z2417731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7501e15cfae96e011c50d7d44ca236674c7fb197fabfadf61b66e2f9aa70fb0. 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/SE5IB1800864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba55d6402fcf6e397eaf08b4b583a331e64bf0eab0901da05514d7453e450e. 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/SE5IB1801099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bcbf2b20f9cbea0cdf7a20f605cb37aee119f953382f93e8d2bfaf3a9dba90. 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/SE5IB1801177.