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 0x267e579e61ea5d7578d71cb5abb6cc612f182c6b1e4787f0c80f153fbd8b65ab. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64a49ab5-d01d-4112-a736-8c096020a8d4.json and https://artists.proofprofile.net/proofs/artist/64a49ab5-d01d-4112-a736-8c096020a8d4.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 0xc0f27b5b20e0db8d1f994fcc802962efc2cf7334bb7ced49db593edab6c5dae9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITK601101490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a19f54e91d111e9d2c67ad55d15103b2a50cbf1b9503380602e8f6edc0ca9. 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/ITK601101505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf2763e3a62bcf40ee7ed9740a21e507d48ed3b948f92d65624a26d4463ba46. 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/ITK601101492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5983ad2bde011ed97f5a7a5aa0882505c821de2c45312bcb2b4e0b543dbed6. 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/ITK601101495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca30f3d382f0e02449309213ae8e2cdf6ad5e1cba3e36c06b600adf4640ab75. 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/ITK601101511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8107db318d1109dd9516fb6ae4ca0eb919e2ff68016c5ae083c8527c2e236c0f. 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/ITK601101496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6930c29ffd6f8e341a94682fb725ab90d47b7f72c4802ee32a85d490b6ac7d9. 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/ITK601101499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d6abfb184bd8f778874c684b4e2edc554131aa4fef9e780d30487e3a57dad7. 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/ITK601101503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead723dee40dd3c8363a9154ef240868e3e48ff5e7e54ec1aa5f4072a3491e21. 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/ITK601101491.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcabbe2f54085499b5e8703537ededd9d15602d378c57b961754998192303f0. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITK601101493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dce428c059ca501095da7b436b379797eacf5ec4fc1549ed83627bc7442eca5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITK601101508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef2a969104bf2035cef710c11bced79114ee2ed2aaa46f1239c08f280e4bce. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITK601101494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835ea92ca7065e454cf51b5cdc5070568731f83abd96b6b5f8dce28a7e5afa67. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITK601101497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7c7dcd697411b00cac14fd7f7fcc09376ac700137d8dbf9e43c66f44310946. 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/ITK601101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20838a833ef8c94fe02b40d45ac5798dbaab23a739cbb2d43c9d5f58e385f9. 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/ITZ142502242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126e2cffbb37e7769a7ee620386244d980f75a84c1550f7586a9c37c6a900fb5. 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/ITZ142502245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba592149ea10d75d9b950cbde0965bbb3ebedc93160656dfcae848c0f5efdf5. 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/ITZ142502246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d169f7cfccf9c57f9aa80eda69c3b01da9a8aee97aa95301960542d34d1bf93. 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/ITZ142502247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a1aacb1d7aff543b780c08034da08b05caeb893be1a2a80c37b5835b48d845. 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/ITZ142502248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02bf3991c7d0af9439e48311a09832bebe4c087474984e7fbcefbdf9c9de151. 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/ITZ142502250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae0498e4ed3d37ab6a876ad16fa72448c2bf5c68bdd2dd56f927be81aafd857. 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/ITZ142502252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272c80565d9e32573a47d7febccbdaf3a57f2d6a306f251c24cc131d6ab05c73. 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/ITZ142502254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430f4b751fbff27584a5b79d7fea1620875f0657520c3f69bb49b1ea754f176c. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/ITZ142502241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fda223e253589380c94e53c0b08c953a1d870add08ec99a61eac9a87effbb9c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ITZ142502243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350815376dbec742f0454fad2577ba23980053b2421a38bac2eb0fcce008a7a. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ITZ142502244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc9aaae8db494dff9d2c18274573422634d69d2b2e8931ddf4e0a2da1406264. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITZ142502249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e9b07f320c8f9844ae2de5d41f5575e7f2bc107793f52f29230e4546f4f45. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITZ142502251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b636ba94f724c6525c22fdb7c687ad114820662c9519c0ba4849739c93514d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITZ142502253.
Leggera nei tuoi occhi (From the documentary "nuns vs. The vatican")