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 0x72176d09496eeb52f1f5c836461d7dd6b1e42f0e950c95198fb915cb2cd3e373. 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/d31d8447-8dd7-4579-88b7-2f6ca4cab43d.json and https://artists.proofprofile.net/proofs/artist/d31d8447-8dd7-4579-88b7-2f6ca4cab43d.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 0xc6c3c6e7768357f842d6d1661b8b44c36e41bb7bccc011557101d5867681bd55. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:54Z), 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/QMWHB1914491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372b49358108ad819b468f2ea1020d5be54b41d3ce83a3f727f96d14643a163b. 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/QMWHB1914492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58092b8c03e1be50595ab9db2d2a64e96912869b3a421fd38cd597c6b964fb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMWHB1914493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12669a220939203744bbd3b7cf14ec69fad663935ae45d965b11558db00ad4f. 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/QMWHB1914499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb790475f414c287ad5de51ecda2640a2cdd09cf96dfeeae6c633675a8f36e1e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMWHB1914500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68760a4719737e96b792565c16521b4970685bd060024cea13f2287e5822530. 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/QMWHB1914501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbba8a2e5aee2ad1a6ae84913a2ffcb594dd5d11f253660659b098c3b6780ef5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMWHB1914502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b65e34a7d09d326b1e6ff9c6bad495e2aa5a96e182030ac203cff970751ce. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:33:55Z), 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/QMWHB1914503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70b181688692fd0c9c15a448c29ded55725a67bcb436526721e128b5d5e54f6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:32Z), 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/QMWHB1914504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97cd59ce21ff8d7474a3c0affbc9739468595ddcaa3a828205c06e143bcc529. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QMWHB1914485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f2f6b7790461cf089463e98b176985030c839bd33b25e1c6044a7754cdd12. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/QMWHB1914489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81721ee2363ea4c009b637dbaea70a3c7f1047b1afd75a92018aaee2537a90b. 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/QMWHB1914459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6e2b74d5e7ec49133fd7e166ee4017fb2568b29154f18d4fd8a11d1e9517f5. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/QMWHB1914464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5449c9c5c047e645105d9c09f0ae0ebfa7f97a70ba008c041ad3ab95e5ef9ae9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMWHB1914465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20adc9fddf3a537759883c10f357e86add0b69fd4dc4b4ef39566f6b9929c062. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMWHB1914468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b675afe0c0f313d99ad79385b36021f6c7ceb3237eee342a93a4718882959. 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/QMWHB1914469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31958eb7a6e03ddf46ced244b439edff2ebe1fca27fafbb2c5ea0e78acecd01. 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/QMWHB1914470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35ce71c7fa1835e0aef8714c66e76d4d01c785b75dbc2e169792aa0a547ea35. 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/QMWHB1914471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09317f4e5a02d69b8dc766268f20681d8eb84509e0e921867b1ed55734bb391. 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/QMWHB1914472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f84e097faf46dabd8e99dbf3dcbaa0f92fb95e1a226c483503f29af0c55809. 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/QMWHB1914473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28165ef0cd296de8cbd787cae9e7a3e854ee1264ba09324fe1821fe1e34ca3bd. 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/QMWHB1914474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eff74f7a2301baa10595fb338b4b26d48858b7c18667741146b0b88e6629d35. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QMWHB1914475.
It's Such A Good Feeling: The Best Of Mister Rogers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e51269f33ec873e8ddfe60daf6401eff6d3c80fe3d997a3ac0c98661c8c510. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:51Z), 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/QMWHB1915007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f124c24a5ab5cc238c1d8c68807a20c61a5840532515e167fb6a9875aa72af. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:49Z), 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/QMWHB1915010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f59e1b71e0d8ea7ecc65c222be829c5c6380b622f2b79fd37afb4ffa11505c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMWHB1915011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb89e874002a886d16e66a0a24a28ffd8fcd2f4407521bb3c7d82415408c5698. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QMWHB1915012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b636db059978f1015186c2895c6eaf7547d03b8440790a5b186423d0112fe37. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/QMWHB1915013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062625ff692988065cfcc0eddedef1425fd0e7512ddd378a8d22cb31e3ef5caa. 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/QMWHB1915017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d15c50c1b920b3420635f4280994c32e306a9607ed856153f90318422a3cd1. 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/QMWHB1915018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f6a68aa5042a1d73ba1486909a20fdd6845f0083e4eec6b4c11ab49ae880b0. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QMWHB1915019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa433e1a8144c7007c81cab2b9b5f9898888682fee8f808f401bc07c994a2d1ad. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:08Z), 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/QMWHB1915020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a300b1301c146d1f8c1e6d5886eac636603acda20c8d63a2e8ace125caabcc. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/QMWHB1915021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2455c8a870ea454ccdcab9e2b88d1411ac5fd022e8557d6e9eb0624b67cc0fea. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QMWHB1915022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c34e3bdda795cfaf5502a9b06e001b421faaeedeef0596bfd1dcfd0ec25922. 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/QMWHB1915023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cdf31913c7f1e326d873caf81db76ca89b46d0ebf1bc2abe25d4fe1ee6de4a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMWHB1915024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba0d5049a0e5183e426b1c201a651b2b1e6ec93bcd6f690838bd5b5f37c7da. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:12Z), 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/QMWHB1915026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef17759a6ee725424a3b06c023963c05f5dd772ed618591667c17dfcdd05b421. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QMWHB1915027.
It's Such a Good Feeling: The Best of Mister Rogers
Back in the Neighborhood: The Best of Mister Rogers, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea30075a3a9717c1866d7c4fe182ab8f3a98c0502c4ce078355a422e26994c63. 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/QMWHB2323116.