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 0x18a2fdade13e62b0e2d76fa3f4230819076834a29f1c3fe2a9fd8bfa5dc37eb4. 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/a9b94978-973c-4c93-b904-02dd87724489.json and https://artists.proofprofile.net/proofs/artist/a9b94978-973c-4c93-b904-02dd87724489.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 0xc3b0c3db06182f6263c6ea326e9e16724a67ac36c37697f0627923fee952bd9c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CA5KR2489738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cece30fa9355d9205c88bcbad984a06c0636440110c95459cf792aeaa73777. 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/MXA3V2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacfd25d884b4a3b5b4dd0eef0c8496895231b11c0ed9c11fe39cc32297707b3. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/MXA3V2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f1b831bf33a815854e8ceb236c9f728d55709b0da9e50df53da0362843207d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/MXA3V2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b2c425d67f6d94120a53111b2ee6ab6a19e30b6dc2310b59263c158199dadd. 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/MXA3V2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0868c2ebcf4a335b706bc7c8799fcfb30e119a14a5a1597415bc035548b36e8c. 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/MXA3V2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5403e33336266a4b649053288219a18313d7be4f2f0b19bc24209471ecfa8991. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/MXA3V2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0a6455b5c15f57090a0012e2414a57b50ffef3a1d480ac1464f5691345577a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:32Z), 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/MXA3V2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8c94751caf05de776af68db0c064e2bfa6264a53170799e9830034801689f. 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/MXA3V2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4f4c5374752bcc49d65a46fc89714e2fe12e87ea8090e29067c71768978324. 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/MXA3V2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d62abaa457ed221e5f7d86804e2eb46a88f626695e70846de0834801ee9c80. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXA3V2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d20a3ac2c6087932f4ad0348c4deb8c3800f034610b8c06d4f36127445081. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXA3V2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ff159f8ef2c9b61abe3ef1b08929cb461f547db1620b58bc2db35e43efaf6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXA3V2400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677d756f73452e89d4af1da5bd91bb2551a2086dee3b599142815c2ebd9597ed. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXA3V2400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0542660d60e991afac9fde4aff3aac862fbb4416cf51ff5733de5d7db3d58c26. 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/MXA3V2400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c720fd5e655d6df6e02415cfe86e506d6664b6c9adb3f9b725df8b026946a09. 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/MXA3V2400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d47e45be6d18fa070aa58353a990f173c9a75b2f476d2ad51d2e55bf9ac1c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXA3V2400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e32da6cf8c1843ff483d1b5bc68538d894a180c72ecef90bb6136453ada9e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MXA3V2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea15038de2dea89e41098743c960562773262c11f9487a26143aab1f83084ff. 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/MXA3V2400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000d5eeedcc48a43d3b7928116d921b8772b87a170e808efb0845a0fe547fe8b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXA3V2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfcbd9fe574a91f1ece26f5decd71ea3df70e1c981fadf47b37645145cd2e07. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/MXA3V2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91962ccadf50b644e1d7be4f218ea1bcea4c3885f06845fe3d7769b3659507f2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/MXA3V2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda14e6f0dc17aadd92e1738bbe62f42b9fe716014c591ae90b761f0168513bbd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/MXA3V2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190d05d93db76bbc417d27c4fcdd5fd918d27921dfb01289091a6b4cc1b5ef58. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MXA3V2400199.
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