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 0x6a431cf5d11bed4269572f6658d09dffb1768307595d8cf0b4e1936a979d507a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed7b74c4-d1b6-41a3-9aba-d6ceca52064b.json and https://artists.proofprofile.net/proofs/artist/ed7b74c4-d1b6-41a3-9aba-d6ceca52064b.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 0x041c96c51f1c9a221c2215651ef79b4bd344ef8384de629c2f9c8c0b34795dff. 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/DEAL31800338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f43f318296111b943988ec36378b916f5376c7973afdee0c69d759547ce58a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEAL31800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c17895c32d46f82b292ff3b74a0a175062c871e4f6c6d87fb5cf83f3b34d996. 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/DEAL31800339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f0a24f6f0c17b3bc2f8d03b7ddbebb86b7fd379ae669aa16f35d623a4318e6. 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/DEAL31800340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7dac08bf462caa89dbc64846f8cc7a51380078c96c8f73cca24734329ec14. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEAL31800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ec38b00e617d7be7c29a41f9288a29b67c2df0323d1291c8378a498d7864c. 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/DEAL31800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11129ce307fed72171edfa8b0d3cd89b690b88af44dd2cc9b607322c8efab2bd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEAL31800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f0c3e497d88b25fd0039db59e2153423ff214b6604318bfab3e0ccfaa1be0d. 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/DEAL31800344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50b483baf5965807e77d26cd1ac1c09e6d13504ba2bdd9d0978ea08f7fc5b6e. 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/DEAL31800345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7bb48aa46aa84ccdb4d5172e19e90b8efcda69f5a134846832a61323b50ed2. 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/DEAL31800346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd7a2e3169d88b4a9b0e5525c83a06c65e65321fba7a72233c5e94190650ae9. 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/DEAL31800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942b7d99c1dca2d5e3527de4fec4f6d2a35d34350856d281e43bbcd4f3930f39. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEAL31800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41859bbd69903297c117ebb82020a70e1f3bac588c44bab70a719d86d42df8d1. 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/DEAL31800349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce271f71f060f4c7a9cf7a0b8ebe797ce85c9ff7425ac6f1ca9cbd62966ad0a4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAL31801184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c49d30909dacbc82469cc1fdbc5a6dd2c4fbc28a66fe6dff1960113cea7bdd5. 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/DEAL31801185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b44ab6b2733345152b74ecb8f95816d65e90ed22b29ced070528ac22aad319. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:18Z), 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/DEAL31801186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97833dcdb69abce7838337b68e2fdc7363a7e6f5ff62805390fe847a9a852c9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEAL31801187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8d8ef9ca0baae8bf65378845bc4a09e8a6ebb6fae67dd962fdc75cb4778265. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEAL31801188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3a68c1f32beb70ca1465ca96deb6314b1e4be281926dc175b9208e85c54456. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DEAL31801189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43351e45c4220ef51c02b303cb12d7b73bc4800596aba26f18d73c9492fae487. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEAL31801193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6aabe586d0005c51fba392042bec8f32794e987b5dc6d6bc9adf22d3d7c7e4. 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/DEAL32300348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44609acdb0485fefc89ffa68751aabd07829a2fdacd79b348b7f530d58e13b91. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEAL32300349.
Babylon Berlin (Music from the Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762aa481a6c7c73f4e2bafaa3dc64cae19b19a7a4fc7a1d86dfee8225a03d65e. 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/DELV41702671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414c37e56a396625c185d39e32a3cd9546c05f7a2178d78f6bd20a95bd54637f. 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/DELV41702672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb405448ee7e85fb4844f090c04f76579d1ca0b4c7e23813ac52719e9cc2722a9. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:34:20Z), 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/DELV41702677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24a46cd2c7b63b0cecdd27a57836f6a79551e2e96c59a7da0d41c6fa8102ce8. 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/DELV41702688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786c2a4e50be013af658bb8e16a4509e32ff5e4b0032898a69a62dc4d6890722. 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/DELV41702683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98815c4a065286ed772a48008fef4123c75880d67562cf31e67bbba9f06d183c. 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/DELV41702684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211580fbbd8245859285553a6939d3c098e097418d57299a6f7a11817e85928. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEU901502345.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch