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 0x8e8ac0362531d54d5504e53436be02fef50d3711edddd53c958a70f5b5d756a3. 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/0f5b1474-aac1-4c2a-9436-0c1720a90047.json and https://artists.proofprofile.net/proofs/artist/0f5b1474-aac1-4c2a-9436-0c1720a90047.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 0x0faffe02c83ff9098bcef005f22bd7e01d6456bec0679157f53c65718338b11b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE6SA2438921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48467aa7916e10d1a9acbf829d7d968a38f76c7d890ae14f5659e0e401b53c0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6SA2438922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ac7bb7f2e20515236d4859f2d101a4441d38862016f6f4cefa9e0ab0861427. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/SE6SA2438923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36d0a6ba3157939bda6c2493f190c73fadf0da4cb4d8fc78a89f46e4594f65e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:06:30Z), 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/SE6SA2438924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9275c8cebf223545391548e8f89c3cd8eee262418ace315dd76d18115f76aa4. 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/SE6SA2438925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fa2da50958e790d153221e705d32c365e6d04e566943cf860e6d1fbd520f1a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6SA2438926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e75936dd8b558b19a3e709378926c734e9aadd2877d1fb6347d33ebdaa52ad8. 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/SE6SA2438927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea766b4db1e04b9bda641d9a02d48f71fbbb6175d3d8ac03150dc5f0815b9b4. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/SE6SA2438928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c94974742d765c4178d75e9260dbec61b2fa27f1efcb9ce17d3da9f5461efd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6SA2438929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a723d72be947aa8d68419de61df32e3f811d72f2c1b43307a93b3e3b70ea20e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE6SA2438930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a22b97f23e21270ef96665f2a55cd13b04e6ebcc72d5d7627c3999ac81952. 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/ATBK71201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774e26556d881b22eaeba26aa09cedf04fec716ecd11a8f70da997da19b214d7. 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/ATBK71201227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1a05beda20cdd614d33dc96687ad9b645de538562d558eab8977b8e08525ad. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ATBK71201416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89af62ab38ff240b3128818327cf6277e02a1d551a0983c1c4861c362e0dd83. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ATBK71201417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc942a46997c54f5ff8b3b259f01c6ae155c1547d53f5bfc22e7e474543a251fb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:59Z), 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/ATBK71201418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558cb6aaaea066f425c4b32ab625fc209c40b4ab5f29a6cdbde0e003897a5758. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ATBK71201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01084c6cf63facd74553942e7aada66a48a35821588e6e30e23b48509865b673. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ATBK71201422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b02b879af9685ea50bcf845e60b6a5e90901110263064e8269bdff973a15ff0. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ATBK71201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b76a5542b2a4a17aeaeb73d9013e56c5731801fe1e399397907fa6e98947eb4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ATBK71201424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e81390e41ef5b7d660d612728970cdab38def6cf43b152f2a24d6744361f7f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ATBK71201425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd248dab9f59c94c6acfe8bb7ad673db45242583a0f9f2d8f912f3475ff8ce0df. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:59Z), 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/ATBK71201426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc5ef041fc97a9a56b482ef18526a260dc72e852dcaed383b40cadd51197c0e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATBK71201427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe913098cdc6f01aa8a7f0ff05eebd5fbae58dac794c2cab2fc798660169fb6da. 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/ATBK71201428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77ce271d1fc402240e6083ffb7347f1e2cabdb9b36a3c8f4330e3faf4d4dc89. 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/ATBK71201429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb37bbf76779e0cbf2704b35441e961ccb44fcf2a7abba366fe75e9870b22f77. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:36Z), 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/ATBK71201430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6c64044a1b7c083a7c146802e657ca114c2b2a24c98d747e30422528be0e8f. 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/ATBK71201431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5142c87fa8956e99b3c8c800b5bac7f5b5836731fa0a79edbb219e37e2fd62cb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATBK71201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02e8719fa1864704f1184a89c21d1d54d593aa5837878f5b2a0c4b8ba6e980d. 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/ATBK71201433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d7ed02445ee272e1145fbf49c9e897e5cddd5d092e5f6369d1febf3afb40e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ATBK71201434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48424a73990938574bf7196bd9e6ac82013881dccfb6da03784065eeecd9a7a3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATBK71201435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777706dbb4264007ab7407e52f93140206ff4d3f8c655c08a6a8059a532a6a98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ATBK71206192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65500c5f3a7a52c95ec1e6f5c5e60b8dfa6b266ade6267b68c3b8321351e6aca. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:46Z), 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/ATBK71206193.