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 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 0xfcd3db41c7418801f90dffa3ca0c481eb1518baa0495fc089c056d4db2a8ff14. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c84f5320-b669-4762-a931-0f757eb7ee91.json and https://artists.proofprofile.net/proofs/artist/c84f5320-b669-4762-a931-0f757eb7ee91.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 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 0xa9431ff31d7dafdb4a83d5500382aabf9a6306406f12b139535f9d1c9328ae1e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCJPL2083783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c96388b98084fa5cfa95385d6da58736aef42bfcfb12176184eb2ce286a162. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPO2136077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c96388b98084fa5cfa95385d6da58736aef42bfcfb12176184eb2ce286a162. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCJPO2136077.
IT'S TOUGH BEING A MAN (CHOPPED AND SCREWED)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e433981d004e2347da844cd5ccf2acba9e153e8c1214a5557b23d2cba872f62. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPQ2168621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b40d1e8be24f40b29ecbc428b8f00b2953ed8e9c1239dab01e59003474cda. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPS2259366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b40d1e8be24f40b29ecbc428b8f00b2953ed8e9c1239dab01e59003474cda. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCJPS2259366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6365f0fdf8cfa0300c51febae18c02d73591dd3097f888d4cd09987e66feded. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/TCJPY2483063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff40ee0592eed71594bde94b6fc3075cd558444f0d465def6de5912fe11cf63. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPI2582698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16875310dc7e18aa1a9a97926ed32d59c1afa5853c88ad038a17082d19309fdd. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JPS801949966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fff242a83af266247165ad93ba7baa0b034a7128359c0fee3d02870760f11. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPS801949967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7ac5150fb8145c7637841755bf7a458f2248203d69fe9f0fcb997fc1bd8cf2. 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/JPS801949968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeed20a50795512c9262d51753b81474bec578fb05484ceb79fe95a16a3e1a2. 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/JPS801949969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fbd32e47ae4201ece1526d43da472101e6a2231bb13d09915165e908aaaf83. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/JPS801949970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0bed9366ed9dccf15ea04f7fbf1842ce2618a4ee88a7607b4054fa1e8313a0. 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/JPS801949971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa528a3a4c527c2ceea5d4ef34f6fe1fa52fee7e3b89b2ca0f70fcc8d974112. 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/JPS801949972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea4083e5ca462cecfbd94f4f15e99f2c85f5e4ad264bff6aea2661981ad1921. 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/JPS801949973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617946d86e9e6f52b48da9821869216f8faffdbd0fae2f098c0a68a947f2c16b. 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/JPS801949974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c077b26fc4cb516fd6df2b5c9646238e8d016c851186d18b5f983b8f8a277c7. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/JPS801949975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb31b348ef621bbc3be8e1d595289204810d05155ef1664c5192a5965c9ec7. 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/JPS801949976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb20fc90bc0ee349d52dbb8005bf93ef17e0e39edc684029aa7af36a7fd4ba50. 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/JPS801949977.