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 0x8bb6f3dafd83aa13ae8b3050d5854d78773a96d6cfcf907985de31ce2d2c8870. 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/26b08535-f631-499a-920a-7f56dc7ae509.json and https://artists.proofprofile.net/proofs/artist/26b08535-f631-499a-920a-7f56dc7ae509.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 0x51b3d8a5f8918d7534aa25fe912ac8bd412a0aaa0800405f0f1f5496c31d6a96. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X41930023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57100c03c8182afdae9e3f89b61dfcfadda2992142317a9d1242de1cab4cd60a. 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/FR96X1943630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d9cafd193cbc0cabc77b3b1a9bfa80c990fbe6eceb79dfda9d2b9d74259e4. 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/FR9W12028212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decea1d5a78cd7480d6b3121b1876cca8b5e395b2c57dd2f1286f5a3ce8bbff. 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/FR9W12028211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d9cafd193cbc0cabc77b3b1a9bfa80c990fbe6eceb79dfda9d2b9d74259e4. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR9W12028212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4546cee0bfd103d9fdfdc790bd7a84af974161e41265025d343871085df0de2e. 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/FR9W12111671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a9a71055f040c7042efe6b6fc0ce71ce944d2690351f3789fbc32837fd7b9. 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/FR9W12026376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7d9cafd193cbc0cabc77b3b1a9bfa80c990fbe6eceb79dfda9d2b9d74259e4. 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/FR9W12028212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4546cee0bfd103d9fdfdc790bd7a84af974161e41265025d343871085df0de2e. 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/FR9W12111671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001140119bd3eadd58c332a74ec044894420f6aae6c84654f7cc95dabb6e90e3. 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/FR59R2281794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be349f039daf79e2255b75b6f5e34273f796ef7a4805a72c5b6aedf0a7883c8. 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/FRX202204103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb6e417e06dcbac69426d1dbe590c7dfa528d2b24640f9abf00294cfc74e35. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FRX452276141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc49f0ac940d2a2a2bd6ac500d7276918cca7eb86ba93ed93792dc5ad4aeaa6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12315242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6951f705b3be05133f39f1b059dc2df8e8e8dd71be5f2c38ca2bf99e3a808d. 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/FR9W12315240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc49f0ac940d2a2a2bd6ac500d7276918cca7eb86ba93ed93792dc5ad4aeaa6. 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/FR9W12315242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef209c23605a24d4c49bb2ad61d347f08a624012e0c713c84010e178ba3e7c5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR9W12315244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc915b12d8eac7596c0e8fff75b6102827d39de153e0777575908719f3d61b9fa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR9W12315247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c1d27a9e2324640041f30c903e0d9e51496b9c7dc0d7c7f4174c5835a128c3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR9W12315252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4f5784d5eaa4d8f4b5d93b41c91a17f3e376296524de1fe33cb8d07ea32ba5. 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/DGA062312913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e84a631b027df5c0beeee2a11d0767d037f332669e0236421a78543b79a482. 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/TCAHW2409075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1435df355b0f6dce959eef61147995fb78febdc2a977e33aba52ced162fe0b. 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/FRDKY2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1435df355b0f6dce959eef61147995fb78febdc2a977e33aba52ced162fe0b. 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/FRDKY2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70eaa23d09f879d6e3a211564df8b01cca9eb15b1e154ec48d2be5ad1887332. 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/TCAHA2337319.