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 0x77ec354ed74a7284ca9e457501b6a67811143b29c135cdb388eeededd66a3961. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaefa865-6681-4bfa-a185-21e5b02be869.json and https://artists.proofprofile.net/proofs/artist/eaefa865-6681-4bfa-a185-21e5b02be869.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 0x8a4b02d714ab2c7377ada38dee7aab18707c5aca044f11ea53996f7b3330661f. 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/TCAHR2315834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99620af7beb5e806b62f0b889358e1d70c89eabf127eafe0632a96b8436a2fdc. 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/TCAHR2315838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf42f86c7a3a8226718bc6c091a4bba0db9940f030b947fc904fea8db0209c39. 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/TCAHR2315843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba421a1b4fbb7ce5f2e92ba40d9d9cb2586b8512f54dc4723de5e00e20b502. 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/TCAHR2315850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf792d14d5d119fad6da3baf313c8ddfea329b3ea8997d8bb3f8b4811491f8c9a. 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/TCAHR2315853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c7f34d3fe8644d9cec5803277eaaeda7046cc83bac9ff8dc717b4d410b2d39. 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/TCAHR2315866.
We Just Have Tonight (Let’s Celebrate We Are Alive)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdaf0cbc9180776a088ab4b89f77281b3a1c0ce2da61fe42071cbdf9028bbf5. 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/TCAHR2315891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d64b96c63a8886bf47b6b79970e15d34961d03dc79d6b050728ffc4d34b7d1e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAHR2315856.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ea18582f674bed77fbb1e28de5516abfed24a3d560116c4f34b5033fb29d6c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCAHR2315859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f98009b24ed9674ea6f60a4e007e3ef798b60421fbc1d9b936c7268b23a49e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAHR2315869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdade3f54594ea35f99bbcf8d419970a16c25ee5827d2681810c601dada15458. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCAHR2315875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2b02207cf5441c70ac3f3d154787ef321d5d2c729fa6ea1339998a96f9741a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN72257981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a55a4847d9aecea8ce7234b036c9347dffe900ee8e3104a84b78f92952c31. 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/QZHN72257987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26254f0842a668adf647d13edebaff65d26c6d9e23be1bdd5c6155eecdc4cc54. 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/QZHN72257988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6abaa05cfcbc8fa707e61c3f3ed92baf8577597dc4f7ba43c83f4652341ed52. 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/QZHN72257990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd0a126b2b961fca6abc9187148e1d30e00994c4be13d56b68c9a08fb8c5a55. 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/QZHN72257991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18affd5005e0f694c96fdb5f1c94e5119338cab4eb099401a7f8a81e725d48. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZHN72257992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98623b5ad3f0f3ac769f201c7699e878ebfc51ce8932c0aab662fa01ab277ef1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZHN72257979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e485ee6c63f5415925b86b7220c92225da1bedb44955ddcc94840a20b650a6a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZHN72257983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87052652fc3510f09dff32d319349a091e55fd9062d292fab21c5fbf6ccff155. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN72257984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc375c20491feef48b9178918281fb132545326db74b6b41681e6ecdd06ff076. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZHN72257985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7183611a2bf393c33c770d565c0954bea36f47f2b417b102be924d869ae2400. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/QZHN72257986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa705260d560f54e0161ff0ff69be50676ec66bdba6125525d49a04591e0a90a2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHN72257989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fea5b16f018b04bcbd5a26100e8dc8c9e464ea8a00091de71f12be79305f772. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZHN72257993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c16fa8f4eb8ba1b7dc78787ee493fd838ee69a62433b6a5109c2b120a946f2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHN72257994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e2f10976501f6d47f82664f728eaf3da400f5b231df5c5ed78d3e816b97644. 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/TCAHT2445148.
Piano Sessions: An Attempt of Self-Criticism
The Princess of the Desert (Ask Why Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdfd762081c25906b9f444f4ea3249eedf999e3c32e1e0ca987b2f71116dc88. 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/TCAED1914063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f109aeac7e89a8524be36b6db291d0ee7a1e1a47f8b01589353961862fafacb. 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/TCAED1914086.
Shanghai: Another Day to Find What I Want
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bb4d877cc9bb0c878fa06e0e71032d18091ab7ddd63230d0064aa09fe34a60. 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/TCAED1914087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67000cbb8bfe13e05aeaa1a168c1c27f48096e964aefcc50e9f353571fd9ffe3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAED1914055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b353243d7859df15adec10c162d9febc318f36fd72a6d188ae5174caa9c6862. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/TCAED1914071.
Can't Park Your Bike at Shanghai Tushuguan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b00fa7ef0fdd31590cd108a4eb2dd88bdf1e55c2e4ed71c76b4a63891d3c7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCAED1914089.