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 0xb5f3d22a8eb2081876cd4a3cc9bb23108f3ecfb927b96bd1ea8d2b318d5259f0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eab75fbd-3efa-469f-b947-3919555f714e.json and https://artists.proofprofile.net/proofs/artist/eab75fbd-3efa-469f-b947-3919555f714e.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 0x9638fe2f12aefe9abe03c2d1f54de2fce8846a61e3acec27d8858929f1d17551. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLL041400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef3d3bb22c7ae3eb7f32d22b986d95f158165515885e08ac656c5b0e87173c5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:25Z), 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/PLL041400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9824fef3d1098eb1496602aec3a0d9e80385ebe6d99fd9aa696452238cde203. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLL041400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fe03fce070c6388ace8dd1d4d2aa497de59aa3876bbdf323b519d4c507d15d. 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/PLL041400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390ce6e06e86040e2ef4b45466ff143e7339e18882891975c6e7656fee008b1d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLL041400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa994df599ecafe98d71599321338b190e4693b9f307c3d3fbe68f363a6b3f2cf. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLL041400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b785ceb051f586d7c75b14ffeafb1710fcee666bc856737927f44585f463a62. 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/PL17E1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a4437455526a9f9a6c27dde3b9c9c48653936e38502b4ab87fe660712d7fb7. 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/PL17E1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f74d57a52d9cced618b1d898d5a139c2afb227d6e2d629fed4826b920adb15. 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/PL17E1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866b6f0561eee237a3ea840dceb94cd31f2662faad9108cbad39a95dc87aed2. 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/PL17E1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7f530e4abc6f67e1216e8be21323b442ea8e1066f85a9cf290edd7734c5531. 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/PL17E1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f36973f7e2db0a1de175a205786466d11a95983ca24e2fc2818ddccd1e68a32. 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/PL17E1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dab9f6d267c3cf92d33c28cfc9712aca80fd4e5bc57aeb39c0ddb813e84b36b. 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/PL17E1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da0be6d4d9b26f237bd5c88cbbaa263fe0a7966cb85e1333907fbabf0974292. 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/PL17E1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89aa79c9caffbea7d9572e0f15e3e01f55f553b1a14b3ee9c3f240125ff79fe. 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/PL17E1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c832e2711cf9d4a26b91d0da142d22ed830d3ceacc1c95b4baa43a5a79a7b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PL17E1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd27e182f450d770dac0f6e31b478811d61d5c37ba76d62722581a0841f1ff. 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/PL17E1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2546bf5c9d99a1b7daffb1a68f0b73618364ae9e7efeb891345d15c68eefa0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/PL17E1900020.
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 0xeba890ad3c40d23e5012ea60eabe0bceb49bc4dc90e31ec9f97d6d1ec8c004ab. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PL17E1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8c0c3c9045b8eb5c94696f5b6cd093c01879e81f5f483e52b554447be882b4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PL17E1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ecbc49994690f355b667e6055684e4ef4ef6ee55709050a1cb9637dca9e27. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/PL17E1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1c11b7898f4fe290e48a8b20e4d44208ff33f914daffdb5c8f5d7263f3db6d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/PL17E1900004.
Non Serviam Tom II / Ważne Są Rzeczy Ważne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b71d5e8bc6bd9d3702c5a209d59842fe1dbe3f7e0e81de16deb21f4c27b3d. 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/PLC062418895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16daa56ffcea1837d6f02d03dd70d1bc75b8e4abfb4b812d9d0d7933fa31e1c. 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/PLV192200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf848a2b2623ef9b0303358213b1aa1e0346ff0eb4106f8090220408362c702d. 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/PLV192200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf848a2b2623ef9b0303358213b1aa1e0346ff0eb4106f8090220408362c702d. 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/PLV192200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84d2de9da2b8ab5a9b5e72c0eb7ce670278d0aaad2efaaf20b980e0167fd735. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCACB1462608.