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 0x9d17dfec60c51a51e22bba5d9bdb02db82d588a8dbe203aa4d69eaa0eaa98177. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8087bb41-0e62-41ef-88b3-be4d2f86efdb.json and https://artists.proofprofile.net/proofs/artist/8087bb41-0e62-41ef-88b3-be4d2f86efdb.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 0x3f39e70bd02b27ea6d2235ad54df3c4836a780575e41063f278729bdc9ed7113. 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/ITA619010452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a9379c4054f6e4027cc6324ace78e91ca718b4ce24c9b733aa0a1294583699. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITA619010454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32022a125e4ae1abb7f1944f0c682875f3337b771df0f48a18743cfa2ab1b925. 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/ITA619010455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4c91f2f911faac2db7e942016fc4e7b2427caf7c94fc90d352be7ab8343c1. 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/ITA619010459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396803ad09335dc058893d1e130b05e88f6e8c6f42b8ea1064b74f24b2b6082d. 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/ITA619010461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a95e0d74913c1218a7ef83b90b3fcc870b60ac591e80b8740ed95028fa6dbb. 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/ITA619010449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa38c7208d17cee37ef45eee08ea897643b41a619592d27699ae333a4ce23d. 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/ITA619010443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118e2231a1c0b46a7802a907bdf1bc1a4e8e176d28b3013f24a46a013798048. 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/USA2P2444787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa38c7208d17cee37ef45eee08ea897643b41a619592d27699ae333a4ce23d. 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/ITA619010443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32022a125e4ae1abb7f1944f0c682875f3337b771df0f48a18743cfa2ab1b925. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ITA619010455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700b9fdf7e3e2c45999017fee3b47fcf632df699c1ecb096e2eec45200d7dff. 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/ITA618710589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396803ad09335dc058893d1e130b05e88f6e8c6f42b8ea1064b74f24b2b6082d. 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/ITA619010461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4c91f2f911faac2db7e942016fc4e7b2427caf7c94fc90d352be7ab8343c1. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/ITA619010459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df4e775c7e1ead3bb4019bf58e110f8645950ecabfb3ab65089a13a4ddc0885. 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/ITA618710593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6195c02497144e25c9fe6327b63d008733e73bdac8f9b8ff35cc372fac7e5dc2. 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/ITA618710596.
Aftab, Mahtab (Iranian Pop, Rock Bands Music from 60's) on 45 RPM LP's, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38e0a19b10541aa899af126d76883301ca9515f9d088162ae79620aedcc696. 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/IRIRA1101928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae9e715c7cfacc2a3c0d4b3bacef8b2b3467942315b75aa31717ab15770ec9c. 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/IRIRA1101934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a056d85f2b0f29a6d46e3bf4d07f266a479c203e070703cb93582aad6ef30f1. 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/IRIRA1101937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481f28916a61eac3038ee46c2eae28a912f096858681dee89bf5f5e74c9d24c. 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/ITA611313399.
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