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 0x640511466d9c00353d08a81b7b5f0098768475f589059d69a36df76ef6f7a30e. 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/6e495940-22d3-4111-8c6c-54c0f77a4d11.json and https://artists.proofprofile.net/proofs/artist/6e495940-22d3-4111-8c6c-54c0f77a4d11.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 0x20e488f6e80603740cf4679667ab0f3473439cd4c06f9d0ebefc157f7f744b45. 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/UKACT1850911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d87a0647093ad74ad4670f20a7b6d57e887377ae2c7b933bd5cec1019270e1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:26Z), 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/UKACT1850910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35b42d173f94e93755567899bf4a9d24943720165f8c1df107646f7f7fae722. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKACT1850908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cefca033c0140e08be2df98045c98d4473f275ece66a27336d83c85db400b75. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UKACT1850909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c425378a2a0195757d2407d3beb3b8093a310dff9451440ed1fe569662077c3. 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/UKACT1950050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab126313b90e4b6477ae42a683a0a30a0a24ef9f0b8f4ab132e05764f29f960. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKACT1950052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce99df1807ba89e92da333a955fe328c82d743ad9a54765d8f383ceb03ccabf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKACT1950053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dee2e89f14afdd1b65bc4617dab35d6653073c5c6024c21f8e70c8d2aa86da. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKACT1950057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe97a75ab1fac19842059fc0e1cec195a8c9d44b426bcc4a04d5274ddfab1613. 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/UKR6V2391165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c401e7ac6ec8a4f763ed0212db78138c6b3f23a40dba0d242d0bdffcbda41a9. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKR6V2391166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15248839be69d1963909425cbc227087e03f8a4484edcd6dbcd95b1b83713bef. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKR6V2391167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec9ff2df0dd76cd8e8403416ce4a1662a3b9a003e1d3756085676febfd103c5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKR6V2391168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708dd6821082577d7c37ce28e26eebc917b44333c692ba3dfbf3cc17719ad7f5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKR6V2391169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2467465784dacba460d30f85fa70ac6fc6096ead3de4b432eab1a01d53ec9114. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UKR6V2391170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc12a6e4495195274e0dea66874cbdc00c05eb082c86bd1ef132ffa0c167b74. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKR6V2391171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aeafe1bfac64ea978acadf7536e445c9ee5e0ec5d5fa1a06806897516ae527. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKR6V2391172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2497218ffc8f07656d56a7cc44bc468382fc48906b2c55775252a933af52d6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKR6V2391173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111b7301c2b80e455dffc7621e99f5aaf0a532c140f782c4af568db192a99485. 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/UKR6V2391174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04a23aba3b3d50521cacae15fc7a25e461dd42c560d8fd55f249b112eaeb61e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKR6V2391175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e2752591a31b695e3b84c618e6a3401748adb723264d39520a096b0c036b49. 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/UKR6V2391176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3699149064f36ffce52c202df0448971dd6a144222aad7c31a64023a10cb44. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKR6V2490856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435a1920b1fe0ab7b965ff7170a29e23da45f40fee5b3a81c18a9bd920c07602. 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/UKR6V2490858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36952fd8838aa17b28c704a61ee289c754f23bb785862ac6a13d2046a1cf0ac. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKR6V2490859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15e0b4aeb75e967a67a4a940707c1a67565eb24843bbc5d47fee96d1f501fdd. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/UKR6V2490860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86cc31984a57da5b48f07538c3d5cfb18636d7524d8b963b183fdf7ddd29acd. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/UKR6V2490861.