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 0xe355a85713cde4070f2d6187950547068c482b91e835f6f3a9e192634ace481f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b800b5a2-c266-4e41-9d72-84a4ba7c6fca.json and https://artists.proofprofile.net/proofs/artist/b800b5a2-c266-4e41-9d72-84a4ba7c6fca.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 0x27d43795009acfd13873a584f55084b917ffdda7fd7680daf661396e2f7dd192. 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/HUC261300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784b10ac1c0188cd02ccd93f418e469e81bf068f0459df9d98f7dd00a1e8b63f. 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/NLCK42230808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe787d9eba0fd16fc5601c66885eb4d7a6e050da07745b65a2080c99cc95a67. 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/NLCK42219001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8638024b3d14f18689089404a1f3ab66735f0598300b5e31e7e45d3e7c678d5. 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/NLCK42219002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cc4b75420cb8767bd2de9d8274e4c3689a84dd422389db730afddb3e967620. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLCK41075028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf791740304e21b3ff905a52cd274a8244aea6fb53de76bb43d9855117652436a. 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/NLCK41086295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee357c4d1b0730bc024e955154918f15264eb2c8e7f4f03d16d8da88a544ce9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLCK41086290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62590d4b93ad23707bcba29defbaf1c0afff12712b7f6fdc58a8d2070933b1b6. 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/NLCK42403878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744cd0492e63e58d117bb4b4e9ede39a71029010f19156607be651acb2296948. 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/NLCK42403883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b019057269bf88c95c97d345a19edd74e04b436c369b31b0abdb35f3df4850. 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/NLCK42403884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12081a8e8ec9e5cdd8c1a32efc6bf475493bd3bf4d295b98f8e4c99b2f5969cf. 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/NLCK42403885.
Man Eating Lizard Dragon - Skrimor Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d0d77287756b983b68aa868a7b4130e5e612f6773342f5473f16faabd91bd6. 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/NLCK42403887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40228a0d9b90b657f08f0041a8176fdd6b71c91211ab7bfad0f7a522aaa7bd0. 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/NLCK42403890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa1b1901fb6b4bf76a79732c3c56f71a8d6b649d4324507c6da022b52ed102f. 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/NLCK42403892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41eb05b562fdd58593939e3e18933995cd9e4066d88f9a6205d12175d5fbc56. 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/NLCK42237720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828930263b23a3c75d82897d296774d29381fbc05de5532e5f90099f369a7791. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLCK42237717.
Postcards from the Future (Remixes Part 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f49fa55da10dc42a4b82d8dad210e2b36b38f1cdb729533b9d4f05abcb4c55. 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/NLCK41079958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b8b03a7f8eda129c1e46d3dd2c68011d107061563536b2c794e0e1793776d4. 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/NLCK41079961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4baedac67fae2672925405f0da69161090ea7411d756ce48be732f5821d4a. 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/NLCK41079962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0f80fca5c526ac20a3a105c7ca9262c5c2165c49188b987c97c7ddbaa1475b. 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/NLCK41079963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628d482f53c220aed4009a42fff30d9f128e217f8e0f2473ff73f609047d56b9. 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/NLCK41079964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed59b1a0812e0cc65064249bfb4da5cbb51c80351eb7667974fd86aa3094c10. 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/NLCK41079965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb8b5f6e0088a8687c79d92a973747a2b18c5062761d9a95a5567233d8e28f4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLCK41079967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27544eab53e93c4231d749f1d89778415db8df6f1429fd97c31a6a6364e8d009. 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/NLCK41079969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a03dad096fcc8ee52a6fef894ce9002ba3a11dfd7cbd59b0dab4b9374b384f. 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/NLCK41059490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2581aa0dc9e2ed4ba922069062a3cce3ec9205a45561bc66a0285e8aa8fb7dd6. 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/NLCK41059491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de56fdf3292a655cf112aac492934367f8f61c8993766ad45698ffa4d8c580. 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/NLCK41059492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ddd7d21773d3436cfe8a1b467e5715c710213dcffc4a2af0ecce9afe748528. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLCK41059493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2932da33b4a12e8fc520f6d49efd753a846506524221598368054d372fb66eda. 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/NLCK41059496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cb53d93b8d94771121271c30651e1388a4403e9665d6f0e681fb5430303950. 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/NLCK41059500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42886070876b6cda1072737c2e5775135a78a68a1678eaa88a677e41ab8328ba. 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/NLCK41059502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab5dda26ab90e1679a2220376d52cda2ef169778404c426357fd9cb1825ad8. 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/NLCK42504247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b9a8401fc59a63568cb5e731f5a2f177f514496a7787a37e78025503034f1. 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/NLCK42504248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0812d1a583530676bca830a6cdfa92bf7cf45177ba81368ec495dba79b53a2. 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/NLCK42504249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c8c5693d051d3f563d330d9f332f5dba25b1eb117264fc5f359ae1430b194a. 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/NLCK42504250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922331d4197da87bf009440ba9a8dac5cae37023dd99295bc86817c979bcadf. 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/GBUM92400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d866587b0ce4f290a2972b59f07c504eddd75eeffea9ea88e665a00b391e0ee. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBUM92400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322298d7d34690f9799cdb5805da8b1f47bef6c08df09e53276844635f2e39dc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GB2LD1700122.