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 0x0a7939df4b281014244d9bfbc93bd5b2c8938c612d188dabbd59f7ae54fe8a29. 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/8e4c4545-7cef-4f3b-9b8c-f1131a1a74bb.json and https://artists.proofprofile.net/proofs/artist/8e4c4545-7cef-4f3b-9b8c-f1131a1a74bb.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 0x5567fa79886b1cc91f151e320bdd07874820ca0bf9febc66f79bd13876323c63. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USWWW0201435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65933ccb4979ea53ea385befc8f7f867a3033871aa31c3bc6599c87c9b6a72c. 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/USWWW0201358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ecf141e4ae0108a0e3ee62288400ee97d0b41cb72e721d07497a7c3ffaa404. 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/USWWW0201360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71e1900e5596b8637cbc5ce0a10f95660d481d06cc4caefdc10f9613c492806. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:22:39Z), 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/USWWW0201361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbcd880b276c0ad98ccd24a5e629afb32380bd9acf3bf5e164212de1a063e0. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:24Z), 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/USWWW0201362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9f45bdc4538d17372cb6b697e90bc3a64046c31b93aab263ba2dbe43ba606. 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/USWWW0201363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2161902e268e82ffc6fdcfeea6eea28537a1bffccdf67e1bca1056f8c80273c. 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/USWWW0201364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf412466cd9dcbf12f6ed80220ec4a185a0cae27a0c3dc70bfebfd62a7ca574d5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:21Z), 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/USWWW0201365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795f53af64ed84e626be8e90dff12db5608cafa740adbe57aedee5a977ee5b43. 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/USWWW0201370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de2bf13510dde15fc3f27b016a8fc0318d69bb8e5910b7935615bd85138c7ed. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:06Z), 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/USUM71411866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883b1d317312a35109b78098fab7056d8da9f0bf740e4fbad7ee5892ed8245e4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:04Z), 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/USUM71411874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41905f06e4d905905aeb22834f5358259cf7cac0c4869ae0d14da1693daa2b8c. 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/USUM71411875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad5dcfe6360167b07cb09fd6ffb222c4c232f58fcd4bb50fd9a8d2f81e050c1. 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/USUM71411879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd1f4354dcd42451c8132ae014c58c3c616fa10354e85afb815c349757bf9c9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USYBL0700383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6404b43351620cdaaa4a23034dc33d0d9799bfba13804bf10f31ce6453276ed6. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/USYBL0700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21fa53b0a570d4119d7df8fa01ccdeed20ca34f9187547df34a0f138aeed797. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:18Z), 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/USYBL0700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f52f9f1c86444bf1cde984224e2395685b50f0e594adfeaf98466495b986c86. 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/USYBL0700388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72d9f48e6828dd6ec7f4bee073ccb8cb13b27c7860f8fb823f021de718595d5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USYBL0700393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f5ddf038d23b2186b5d78cb7606f3304076a4896f61a0b98135c9fc35b2206. 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/USYBL0700395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4681a729ab0ad2c1db2b206ea5f0d43a2064bcfb18e7c4c08644c27db2426c3d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USYBL1901634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf1a72c9fac49907431217627b919164298b7fe8bb10826e17fb3db08875ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USYBL1901638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a45a1f860d1b6ea72a258874088a30bdfbc329530c97fb8bc83e0c7c9e0319e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USYBL1901641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ebe682e2c3eba7cd8482e019177f4db60209ce21857d98fedf2afc91fe007d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USYBL1901644.
Buckwild Presents: Diggin' in the Crates - Rare Studio Masters (1993-1997)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f279c855c65f57d08ecff0ff9d8d862bac9b281e0e72ef6c0145b5f2a2c48e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF1557176.