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 0x4df2bb0d93aaa7f15f12ba454ba32609cb6bef7f3755e85218dcd6dc8b7e3a31. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be7a9b40-3f19-4af7-baee-07172d429ddd.json and https://artists.proofprofile.net/proofs/artist/be7a9b40-3f19-4af7-baee-07172d429ddd.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 0x50dd42c2561a6913fced52ab13db1a33bc117219a6978110fe176f26964e8f64. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USZXT2455144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcb14e9b35658c5fce1598177d82ce83fea61e213ce117893bb2e75f93fa2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL8RL2428028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03cdf9af31d516ef3a94c05c0c7b085fe8b1b8c53b6747d14222574efd34478. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDD2455187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4aa449b18775d94c75728c42020d6a771d36e4b39dd338fb7eac40d06e00ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHP2402325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef40e0931c444733867860cd104b3471c7b596e0b089eeff2280a10dc4d137a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMHK2484651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3259930f45925449a8bf260543b8d63402b824c2da57def580a4071e4762ef5a. 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/USLZJ2416072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9ff9036d39f15fb4f53ce8ef99ee47287af93a5b32bebff28b74515bed8bb6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZEC2321792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6959406b083c3cd06de911f0a3518707e20193e4a4e8137168decbd6cf978d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6L2323197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10d55bdcf9d5f3a1c4ca92c191f96805a440fde5fcf5e093812c79186cef934. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMHK2371256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c2ffed1a90c48403db6203e88e052c949f99fcac962679596452d8fb617807. 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/QZS652388647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2785ebb7fe1a36e859ec7f121bf7bd12c6db17d5e7978ec71e28123199a96e3e. 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/QZDA62291012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f877eb1869b9f4cf0525a6cee954d38a8812b783f70081a9b5f467cd1af134. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZXT2455132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d95e97336fde26391e64e1bfd9b0ff19ea95ed5f05bd074700363eebd64699. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USZXT2455133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2891e55be57cf0e48b02071e63fee8ce4f23040e7ef96b62ff2785d806cfc9e. 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/USZXT2455137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7d89fd2be352e61187a1007fdb71f0b1c4cdeb63e3cb748d36885e5f74278b. 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/USZXT2455138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67f85e7c5cf7270b78a8181a1bde2c42781c0d46fa747d1df6fd26e7a545a5b. 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/USZXT2455140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42149807f7e3245ea28e9f95e748131400599b07c273cf69a3912588bde92c20. 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/USZXT2455142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dd42c2561a6913fced52ab13db1a33bc117219a6978110fe176f26964e8f64. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USZXT2455144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524e1af6b54709e7323caa8425d5ecc7f3d735ba1e17550fa8a630a0eb739aea. 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/USZXT2455145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d888c4bd23c075385e93f6b2061c99d5d58ab3a538d81b1de4465676f450ad8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:24:37Z), 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/USZXT2455149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f5228cd5d4c07bdda7bade66dfc9351dcd3ccbccf34d5ab94f09274b8fb86. 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/USZXT2455151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2943dde7f866c4c1dc0564d5b262e39098e7c357851ee32c6f89e1f757465e. 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/USA2P2363559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7063551b025b1645f9ee4c21a52fff03cd0264981129695acc4ae50ae5a838de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2363560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac6fbbf495a56d621557b003a65d482bcd52785ec54ad4ed03e8a6287b322a4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USA2P2403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf537e93e12c93618657dcf3fcb7e8398db27038e7d46bc10cf523eec16f2b. 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/USA2P2403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8bc079decab9b4c8e3adc52da86e05a8a6c1e21e73105c7c456359c8ffac8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2428025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6afc35a961ad4a11f0e9959a32c7768e16a0e07867f8218dda4e78709180c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bcb14e9b35658c5fce1598177d82ce83fea61e213ce117893bb2e75f93fa2. 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/NL8RL2428028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b15723cc4f78fa52a10ed3ae96a7e579a54e2e118216c21a44cc33259f0194. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL8RL2428030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ed2542963b3fadca63d31e629eeec130d6aa73188fc06102085bb8ce93685. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL8RL2428032.
Bass Caps Collective: Fall Mixtape Vol. 001
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7565f2811e194c52bb3c646bc4b6de0e2edeca6da4e854ece130939e4781e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAQOI2416543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339af2f40c74454c2146978360c53c1b635262f75cd18beea71526f9780e1214. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAQOI2415140.