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 0x5b0b66ac1289949b347ee74c8078da78db8c3e281c7fc7d35507a3fa4a78e257. 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/0ffe0f93-f00d-45ce-b519-9911c2298c21.json and https://artists.proofprofile.net/proofs/artist/0ffe0f93-f00d-45ce-b519-9911c2298c21.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 0x0cb91cc72c014f2fa99b8141dd1723b590c5640ee6d0ca372173064ad3d74bfc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282523761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebd2ccd00d5512ca97f5f3c6b02038d443f492389ab73d55e11be2063c63c97. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM7282528386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2c1d4de86f0ef8ef8123c909729de5e30cc93622fa0bca3f0042e4e5d9697. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QM7282528258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad67883a7a55f7f5630b2ad4a57bb013c3c17b17f60c4c369d20c9a0c6cbe151. 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/QM7282528471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50fd9935567fb628c05d270904f1db217b801e4c0886c7bb5798fe9092b8ae. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM7282527596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa293df8ebbb06f25a3a795f98cdefcbad64a77749d309e533a2b7ca81fe6d9d8. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:28Z), 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/QM7282528338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a1f06156d64b875e38d2fbe89dd73b8b6f4392e8da72ccb7be1b98e53e1ef4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282527693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19aec93426e59e24eb7dbd544743c0031ba26a22b5b9d97e598c9ee0d33ba7a8. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM7282527872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ebaeb4ba8484c9bc4cde8e3ba052260066ca0e2ac0426e1031cc0aaafac14. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QM7282528489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82577bb3b1edfea158cdee7adfe0e9956809277ef886d7a1aebe6aac865a0e30. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM7282527818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b34c845755e5a2878dee51be57a8a5dae5bb94f409a1080759061a6ddb678. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:32Z), 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/QM7282528299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6871f5a9d47190015c8b6bade525f6ec0979a449f7f7426563e5e1f25707317. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM7282531721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e1381c9c65a494eda6258440b15983120957fcf384a41a0487d9223d6efe25. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:45Z), 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/QM7282531799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5b1a58847bb4f557f08f8da0b9d663f457839bee718e3cefd9522e84d2c03c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282531772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb32b0844115a789b06c89fe6fbfccfc60768d63b1bfde136e4c954d32291b9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM7282531740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694facfe1944b886f29aa9d6dd1aae74b11832969807a2f1fb8a47ffd89688ad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282531767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab373b8735e247cb1516f855d749b6c981f078e25f25f6ef953ef6acd39676c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM7282531792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865e9258872fda283cb0c614ba5e2e6317eb1983f75993b703e4c99098d2ee2a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QM7282531786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f464e118e3f39e3d2b5f1d24cb83541af5b4605f1ba72b97faa6cd724f273b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM7282531706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722ba45d5f6bfeb0f474ded63d5a741ccafc7e1a4de3c7fb6e0329b51b0a69e6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM7282531769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc153a8000d47da6e739aa8b4e72dd821b08bd35f5d7d9ace03eccb1f68f13e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:41Z), 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/QM7282555968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d63ebdeabaaba0b12c5f674772822bd897a6e8bd2e77efc469c25e95eab7c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:55Z), 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/QM7282555986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6119b9dbad25c2684ed19a47629417ab628c39a38ca6a78b0e28e99e7c5cb26. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:53Z), 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/QM7282556125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64b1c364ef0faeb2260411969d8f754bf84af839ea357b11dc0cdbfa80ecb5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:38Z), 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/QM7282555944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4979dea1c3dd0be1cd3d4a5166d9df68a21295cd2cb6ca817f0df894b3d755f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM7282556160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0dd7482814e808e86a64c2a05fbd70f6261b14fa20c351b2fa17fe603bb4ba. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM7282556013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2db4d90e0a139e247170371f4d80de8e35c13e29ae99232b735032274b9c6b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM7282556145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bfc6d10b1f14d6635c17b1233005a0f713590a9a6c82584b83424f9c5cab83. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QM7282556027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb91e23250c2867e3b3d7a855b36d0e574a67ba2928afc4e08951eeef1a1b40. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM7282556170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd906c00923fef7cecbbb37be789cb8b0273ef46939ea80cb7b28a21bee6f9020. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282555994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351ca1a081abafe66584d8b9c1dcfb2d369366981303480d7991f0c7f200040. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:23Z), 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/QM7282531732.