Dumbo is a 1941 American animated musical comedy-drama fantasy film produced by Walt Disney Productions and released by RKO Radio Pictures. It is based upon the storyline written by Helen Aberson and
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 0x871ccab0f344debab811406a17569ebf0ca32271ccfdc636bba862ba7e94588a. 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/cb7f36f9-152d-42e3-9d77-6921f1d96659.json and https://artists.proofprofile.net/proofs/artist/cb7f36f9-152d-42e3-9d77-6921f1d96659.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dumbo (Das Original-Hörspiel zum Real-Kinofilm)
Dumbo (Hörspiel zum Disney Real-Kinofilm)
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 0x4657a4a6c4715c5ba6a1d7f4e1036f92b9b7b2be68546eb5eb0a85181aa300f9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USWD12218864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f054143c2024c7193ba6b2631208dff2f9f366b0e9ce193dcf26a0d1718b82. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USWD12218865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b2b3d706161fb8e29309c394975eddb4ea482c37bee8b44f89e5e2554d7c31. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USWD12218866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512afdb59e1d98ec3c3629c6e74b4686e780c1aa00b5640d144414edcee6c639. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USWD12218867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be83638517bbd97193093c268dbb12d27f57bc1dde1100f19c4fb18b25967f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USWD12218868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1499dce08cf6ce16ccec087e0aaab1e4953f7bb2b85e6959429c1f0c076988e6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USWD12218869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205ad456f9fea961f9d5af0fe867632912970dfe365120b349ec0f7ac9038158. 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/USWD12218870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee511ff4c4dfc548f34f7451473e4a3f360d3ae0bbfad07721e8df5271b16016. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USWD12218871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7730b828393a885356333c3cc073173a9606b3ce4182b339d89baa9189170026. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USWD12218872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92be5230cd9abc03365c7b2f8de5c1faab7b9efa9dc1c533d9913841af307970. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USWD12218873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0885508d1dd87803b01ccda7c8a9c8fe0f817f03b88fbd63c57389e99aa0103. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USWD12218874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec017a658933e3a142386beb3957c71aa0940ece275abef5a6a892aa1d98731. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USWD12218875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1689f528aac451a584329ade2272d1271bffe3c0cd719d93a060b144edd9a5dc. 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/USWD12218876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f87b383189f50d07b857baef889bb2883bb3e01cf7bfc2f43aeac1d53e59c56. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USWD12218877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83df5c44e0bd0711f635edc7dc3a75c0350817cbbaac8425cd68ade1ec30dfd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USWD12218878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87222a0bfa9793ccff257b74949cfa464e986658fc8b2409e7833d088da236. 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/USWD12218879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137723a1719d0f5c123637e96fb8eef5e0ad71f8dd6b424772a40088723be8a. 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/USWD12218880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd348e3bbf728790bfda11973c0b5410c4fa4e90d0a171783acd0fb6f17c9244a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USWD12218881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb19d9f1718f9be444064a295f703fe892e1ee8af20edda2f2eaefdc20905d. 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/USWD12218882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e227978335cb0341d3481f078891004828761173d4ce209f35e720cb4d4d17. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USWD12218884.