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 0xc50688b2df9b66c3e309c705fd520579c23d1e537d28bf6454b02f66ed383b0b. 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/1b5175cd-b385-4285-a2cd-a9d6d7eca623.json and https://artists.proofprofile.net/proofs/artist/1b5175cd-b385-4285-a2cd-a9d6d7eca623.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 0xee549f3338e2b383a2b1f8873e01eb71c3a5cd03fb516d7b45d3b6c2729dc874. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6F2451183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763c9f3ec8d44c63a268bf3454d5e9f857fc8cb836fd7ebf6d9f263ff4d02cc1. 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/QZK6F2451184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d256648af32ec9dc32ae4e265b1e62bffbebf702fd2e7441b945c4c09038e14. 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/QZK6F2451185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015db31032a3a38b5b7429a9b080aa3d7956da6bae762cf4ad3c5636ddc79403. 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/QZK6F2451186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953b6fde9a049300e227c5e5c30f453dfc35df2e54d28df83ea49aa3c0a9d9a7. 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/QZK6F2451187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfb4ba73f1656226442f7c6694e0581baab9438bad13eafb379d37554f34603. 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/QZK6F2451188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc9e6d98f14ca91ff7f9beb4b0c77425e444dc3a64a10818ad06cccc436114d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6F2451189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42091222d78377aed4c02e809fdb9f9a9c268a1f00a540f5f3e2bdebdab6e3f. 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/QZK6F2451190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041dc330569d8aae8d3693ddf6727aecfcb45b9339ece1e57305b8f7513001f. 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/QZK6F2451191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc70d066382c76870708d9f3e1138b4264a33be47fd1569d01986f056d140b. 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/QZK6F2451192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b263ce14c5aa681d4c12e9ac9d0a2d548c1f8004ab7fcf2cdf58085ec4791e9. 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/QZK6F2451193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477141f4d341030308285c17b141493cf19d5fa3e13520a4aa70a803ebf9938e. 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/QZK6F2451194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c513e6c81d026fbcd43a161ea7cd0fd4dc565c7291e6f35e2aa1b7dc0ee823. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6F2451195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddce50c33073c3fb0e8685177c2584b47101d104643150394d6755281c2b8f7d. 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/QZK6F2451196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f71b894c87b48d4b525b2b515b521be926d516826b49e4ab4ec461affb4a4a. 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/QZK6F2451197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b4321170ed6773ff28799ce6a037738d85a8f93b585bd335203a12dabb77d. 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/QZTAU2475224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d519b99abe0320e4c13d76635c0ce3af80c1fe0b10013fb52a0f07b08a4a1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAX2466965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0249424a1fdd6fae1a55d1be85bced2f56c34599bb5cd3bcc383aec445973b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:29Z), 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/QZWFU2422981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24384089c38e421a2563c6bf321f71084b583b28ee2353a43000cccb7c62050. 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/QZWFH2484688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9062c943628063ac01ff1f454690f68aee727ab9f554b9f126a336eacd2375. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:34:50Z), 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/QZWFH2484689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07254391b5cb6d1b883b7fbcded6d7f44794f0efb62345581f34cb38400e4a46. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZWFH2484690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a57347cb1be45d1a250f600fd672feb4ef86ff1a0d27044d2fa4dd1fee183b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFH2484691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0477e3ad17fc67233113194398da5e7e6e524b0b55230968059c07fa59eeae2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ772463635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48e9eff91b7b3259d2eb27b0defc8ec341fe31c9ca0649c40c71ab797c94332. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ792402335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7a8746a74910c38e1be0d1f96a4fa9af8329a7938457e4231d599fc3c3134. 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/QZZ7R2495784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22176cfd5dc6327b337b79d82d353256b2a98ae91811090e72acb59d02575fb5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMDA72475996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6edae965a629981f567484b59795663bff5524e868b9bda5452833c7e9acc5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QT3EZ2416092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6edae965a629981f567484b59795663bff5524e868b9bda5452833c7e9acc5. 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/QT3EZ2416092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4639f851df44b357ac23ca4b00afa0fea1267171fbd3de6f5448901b9a37839c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QT3EZ2416093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab809299a06885fab8b73df97e93a3e93f99c5cfb77d7555526035e58e213d9d. 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/QT3EZ2416094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13e2f3036e50b86675bfae67d6b797ef3ad192099228154eeb5e731c87da1c6. 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/QT3EZ2416095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325d20ead4705632cb57d7c56bd72d3ea4465fc2db6d0a9df3e2b882e7ba548. 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/QT3EZ2416096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943936e933fd76b254a845e70b165f9a96de81a15b0a4a830efe16d1e11e1f4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:14Z), 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/QZZ792513487.