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 0x44810c88f973e4d96ebf3d27d14b9057e404637238142eb0ac75af7a0fe37f4e. 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/e619fb75-a946-4e92-953d-ab9b879f4129.json and https://artists.proofprofile.net/proofs/artist/e619fb75-a946-4e92-953d-ab9b879f4129.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 0x54e926d4f8abe2cc0b6d514f3dd00d526db0dfe9eeeef4b5255ae2ea7d37a3da. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAEH1953064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22abb49e0a351da950c3e916cdc0c24d33cea364816bee62229bc4b45fdac33e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:09:09Z), 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/TCAEK1988616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf482ca745da85a1f4b95c3eaf552b8477299653abc3166351d5a2e09245339. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAEP2070259.
Something's Changed (Too Many Westerns Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4285234dc76c4b47a254197c62f1b0aff919a6127b7070b81a675dc6bfc279d6. 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/TCAFH2061961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7f5831b3afe4fc145ed8557a21fbf0f0ae415807a8b009aa1d13551c337fa. 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/TCAFJ2104166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba9caaa9e924784c1c0d0f154fe28bc613b39c89dc2dccf1418f47511b54ec. 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/TCAFI2199931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1358e54c53133f52b93e89699bf2b36bb05a5b4e84c56207f117e680c55d48b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:43:28Z), 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/TCAFL2174255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfcd6f170ba651ba9c70e72bf229ad3b3e908c0257178f4b7016cd554f09b12. 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/TCAFO2106960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef73c0cec1c5756bd8df307b520ca4a702ab625b287fdf6414caf43cee4271ed. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAFQ2141425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86f689e1a432a38d90ef94980bdb0d67994677a2c5d75549c2f005561038cc. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCAGA2270673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b991bef5c1c6b206c329fb10425322679b49069b21a605421cba7aba4d800e. 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/TCAGA2299063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db8a975159304a005bb1fa0e403e9a5202959b266e4e606ac4dd6403bfb4b63. 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/TCAGE2266098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6ad691773d4ee89dfec2d918921e9cca9f75f462c01bb2937a26362fc2a5e2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:37:21Z), 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/TCAGG2223213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936c029118ff4ad6c9b3ff1df5cca154e2c88bacafbff14981e3adcd906f568. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAGK2238654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44346d94775e215a90fb2a52cec550358ec6a0beaa8aa0777b8f351ccf13301. 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/TCAGD2247477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96df8b2008cccdbca7576682a60ea3d9d1f33602b6cc89bef3ae44eab387a8d7. 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/TCAHN2387323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36efe844052954304044b13135ddab7efa0d306f0e642a544d88bc52082a0c88. 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/TCAHQ2347000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6903081ef2aee6af1ec1db7dd3623f7a3f2e24ac40d8246d63f1d1c4049abec1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAHS2392286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928ec813f7380f713309cdcd933fab8da4a7d42ed3ed974654694670331d6b7. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:40Z), 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/TCAHW2473409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2939a2a831222b4f018f8d9866d1c304289931695de2856ad62ed5008975bbe. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/TCAHW2424177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c09813a2de43a4b37dd41025c286a152d9b3f3fed24b6cdf4f94729a2015915. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHZ2485101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade2a33b58fc427dc9a75d71c118506fbf8230f59d82f9ffde508ff32f26359. 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/TCAIB2415361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba1eb7ae35d45699418fc09c96568f861f3d72534c26d7f63546fffa4fa3d4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAIF2426346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936c029118ff4ad6c9b3ff1df5cca154e2c88bacafbff14981e3adcd906f568. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAGK2238654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe221581e09e92de0eb35cbf93ad1450a80e8190d180981ed11888df020a2d241. 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/TCAIK2411120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29d51fd54f33285a9d7955fca8896d0826bd798e0f3be516a631feab61c17f. 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/TCAIN2492735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473932ba979c4b0d6159e7f0db6212c338993129fd30e07d3eb9ce055a1d60a. 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/TCAIP2403036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba1eb7ae35d45699418fc09c96568f861f3d72534c26d7f63546fffa4fa3d4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:46Z), 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/TCAIF2426346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4285234dc76c4b47a254197c62f1b0aff919a6127b7070b81a675dc6bfc279d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFH2061961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b991bef5c1c6b206c329fb10425322679b49069b21a605421cba7aba4d800e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGA2299063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4790feb350bec18930f64d20d2a53048983f1d8d8d17fc7683ab350e4e5f4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAHI2317590.