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 0x2f3d3c9d4decb9ac3c63512737f112fa3db00a974da7a4d2ff1d63ac93669403. 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/4892f15a-2dd5-4dfa-9cb2-3226d0637053.json and https://artists.proofprofile.net/proofs/artist/4892f15a-2dd5-4dfa-9cb2-3226d0637053.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 0x828f6039ed21d2fee8f79a89ebab3d779a5e522a1153ba953c15d5fc855ac0e3. 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/QZTBA2494664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280769440dbc151d11b0c1343264afea6d8e13ca63b80eb295139865de5ff72a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/FR2X42315242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f3659ee348e44670d2f7894b10869866c66a9a0af8aae0eb6f9ab40f0b99b. 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/QZES62454864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7c2b84ce42ad6fc65c079b17405e48391fa03dd37da48f00f2350c645e5aa. 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/QZTAU2359958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980a42f2d7853a75440cae4efff6750ceabba46799b5ca0b4c0888861bf89b62. 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/FRX452136974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d54a6fbb2ef732a0b16739cbb8ebbe6b25f8658603f77cbb8cd0efbc96b3f. 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/QZFZ42182739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977d48a33396dd2a8d2b9da2d8f89d583d43dd68728b01cef0d7060a3e4d1018. 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/FRX452136975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7fba958c6aef34e2dc2b4c599553ea32416d2bca808c8272b4f97f14dc857d. 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/FRX452136976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227498b1a33be8a6022ba3a5ddf0563bd515cbcc308a901c4b281ef228bd2c89. 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/QZHN62171565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed01af367a7ed3a07a06698fc270c516e0f525facb5cc324a7864fb86d3be0. 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/FRX452136978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa54d44306fcf4e89d1e2d9d74b1628ea92fe42890fc08bfda210791eb727e8. 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/FRX452136979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d448bf6bc44fea95798b051fde349ae6c78eca1093053f4c28b182aa947f51d. 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/FRX452136980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7b1939498bff5eba343e16e146c96bde997a3d44af40d234f7cec0d6548603. 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/FRX452136981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f6039ed21d2fee8f79a89ebab3d779a5e522a1153ba953c15d5fc855ac0e3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTBA2494664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc810615612ef8861c755a46925ccac325597dfa04b1ea69c4749eb96eb01403. 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/QZNWW2491447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436a3922f74a35d4d1c4369a8ecc02aa6ff80ee006fe8c1fb1cb4181981d6e2. 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/QZMEQ2437036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b32c9ea7d90c0755465362b1799a2e4597cf7f3b8edd94945c5c90989532b. 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/QZK6Q2463233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f3659ee348e44670d2f7894b10869866c66a9a0af8aae0eb6f9ab40f0b99b. 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/QZES62454864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1854b4073c71c97e72a3ccb429cd4cad5274b78a49bf866aa0d50061be48343. 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/QZDA42455909.
Darkest Hour (The Aftermath) [Reimagined]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f7c2b84ce42ad6fc65c079b17405e48391fa03dd37da48f00f2350c645e5aa. 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/QZTAU2359958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280769440dbc151d11b0c1343264afea6d8e13ca63b80eb295139865de5ff72a. 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/FR2X42315242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c141f1b41e6e9fdd507b5fcee1edc5443631f9df11679578519b854e607008. 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/QZNWU2243946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47b15668656b3bea736dd48f191e1b501a25e2b98bdc2984a23a61e9b6a98f8. 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/QZES82261530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa54d44306fcf4e89d1e2d9d74b1628ea92fe42890fc08bfda210791eb727e8. 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/FRX452136979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a9ffe6af72c7e4e783f81cb8e84cb5f31396415c2bb9a6396e0d6d42c38a73. 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/QZK6N2167165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227498b1a33be8a6022ba3a5ddf0563bd515cbcc308a901c4b281ef228bd2c89. 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/QZHN62171565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d54a6fbb2ef732a0b16739cbb8ebbe6b25f8658603f77cbb8cd0efbc96b3f. 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/QZFZ42182739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988bcec0832cf93b915fb8cce6780383e18d8879d5e841444916ca087cbb1103. 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/QZPLR2044210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809ac849455ece5a3f3970eeff390d56bf8a0db05cbc4a08a62b1a54c90bb2e7. 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/QZK6Q2079148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60860f8879deff458ff68094945bb5a351203ab0ef68a2e1fdc45c028d314d7f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES52096719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e34ef2f66184d1ad33f276057d4de04d65ff965343e09fbfa0edd0ac56ea2. 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/QZES61916743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda725bc95556c71f59b254653c46a4accf2edad135aa2ef07f1fddd332dc9e27. 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/QMPKX1865019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edafcf76e4248473676f54dcdf96550c5b9ef3a2f9fed19ac58f1d17722ce44. 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/QMPKX1865020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb92716af5dfe3ea77e824f48d6cc9bf84af5e6f5c5d6812fd124e1595bbf60. 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/QMPKX1865021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73fa826c65a5ef5cdf6b51578d8c6b8b57bc77ee38317d38668d2f4485c4c0. 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/QMPKX1865023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378fed2388aa7419c62b1736b2b4dc76b3db70b82f72e563b5e872113a48475. 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/QZB4J1846989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff72746cf1483314ca1861dba971598efccc10212d2e89eaffc9df0f9bf4e7db. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZ9Y21790932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8df9608e94a51f92ca14bdeb67d8045fd26522f9225c47d7fed698fa110816. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ8LD1762548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a90a4c9c1e41130ab501b705fdca2eedc3a67bc8253506ef1dc207a258fc02c. 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/QZNWU2354493.