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 0x7d0c6326732491d88421d69d720c17170da394aeec919b1566e6f029a5efc9d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/154059bf-7f19-4803-8892-d0d11f2e1b78.json and https://artists.proofprofile.net/proofs/artist/154059bf-7f19-4803-8892-d0d11f2e1b78.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 0x313f860d2fbebe7fad10afc65f5ed62b402b1d8139781f4eb34cafab87fd1679. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM91422951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658e2452a1fa8d6c3a746f8f26bc2aa6ee2c13a30173cffa16d967b352961a0b. 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/USHM91422952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556d57e4260839258b72a283d536ffc8abd6783c0df0246a45fff76194b1368f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM91422955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71d13e6d8f9c12ace86e88fd549d65aaeef038b9952d27648a12850c0ab8b77. 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/USHM91422963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7760460faaaffbdadeb47194714df424abe1f4c5a4639ced16128d5123532b7b. 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/USHM91422969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4c15a0656681908b465aea48311c519f5b4f38fbd4471d63e23b7ee5f5cc29. 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/USHM91422972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742a85ab0ee5b242c1f2e6313ced819b598d2aba05331a27071ed94481df9ef. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM91422981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2899f68912da5e3a3c87845f385ffe6f8b9254f9281881f3d000f1bfd4d8a2. 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/USHM91422984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4e5d0e6f966bb8249b46f341f75f1e376151889aad57e2aad0cdbfcc42b7b. 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/USDY41525983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048dde0d8caeb7cb340af13a66ccf0cf2bfae420dbb3113a17d2214d69998b9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USDY41525984.
Fun Kids Songs, Vol. 2 (Karaoke Versions)
Fun Kids Songs, Vol. 1 (Karaoke Versions)
Fun Kids Songs, Vol. 3 (Karaoke Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85976606d21a2b7ef6145ccf9dd3c24779acf8366e84ea3b28952db3252004ef. 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/USL4R2042905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc6f889782849b9d829db911d7e9c63711389de047fa253a41fd11ea474b1a5. 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/USL4R2042907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0715d470609b56ff2745091ac44632bd8454a90ea2b6f8767a47bbb85ea76ba. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USL4R2042908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68911253eef891633acfec8fa1c6956a40c7f390a8d9aa4b1c7ec1347ad0ef. 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/USL4R2042909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27971acab4cfac1d176669e3fff4f991f3a7219ec7efc09844ea353c5797cf33. 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/USL4R2042910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5fbde476d49d2a7338c91cfdc33080e0ca3f89e16e76702d1bfd323092be9b. 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/USL4R2042911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33c1a033a10739511d7447c9b808c612db97d89f6edd5b05b448d9cfca56972. 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/USL4R2042912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fab33cf8b61546f8b214f7c2edf0027a666bf3d6298dfb2ac936d1dce32198. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:36Z), 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/USL4R2042913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e972bbc214d2c256aa8beae7df06d2b3a2c048eef390f3d6b1b3fd3648f02e. 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/USL4R2042914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3f6bd6ccf28bc4e14c9c8d367e0df500bc1a547f5e494d2af3beeb5688c4f. 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/USL4R2042915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79b4ed2c63250d910af88a93f48adac468483a47645da1aaaeecdbfb3e6d7f4. 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/USHM22184711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37781bce7f53baded5b9fc569333c0ab68add147a0d1da5fa1909dfa940bcc6. 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/USHM22184721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf976377c32143f73a9023fb27dea323f95de77e3275990537679ec099adfa. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USHM82199605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018382197e7e6454a92204a92536441ba55285e1dcc85e5db6755ca6b8fa23e7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USHM82199607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b75722d0e2287a620eb81a2406f5c747fc1a5bcfbaebf2b218ee270c8c5e8e. 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/USHM82199609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e0d7f464dca529e8eb8045cf5bd8eb1057a4ffdf16177f157acacd72304059. 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/USHM82199612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12e62106b7fcd9c3e630f0e79001db79176fb714f45fbb594af2e51c118bd02. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM92270875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa0eb6f0547f98e32f3c36a04c08f966641f5a24dff1e638dd8eb9645dc6dec. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USHM92270876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8668c3b32b6069cae42412b1f803cc403b3e27eff0632d5f123e4c58deba94dd. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:44Z), 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/USHM92270878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fadfeec158b84236e814aac568c57febc6d8935f47a3801443f80c6a9116ae. 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/USHM92270879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93813f01fb45840e783b009f53cfa0db23b2fe3e50c9c2305569de25171a832. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM92270881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7135620c5adbb6fe0ef58bacf252e7b1578dd88125ca60c23d1d41e963adb6d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM92270882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb182029d6caeabed3e0d7d14d3b980800a7104c15a8682897348b0e473bf3144. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM92270885.