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 0x5ad82a639010bcce142b54dab054d08e86491338ae3bacbb3cddb8bde16365fd. 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/71bba2bb-267c-4075-8a3d-6ad29fe764d3.json and https://artists.proofprofile.net/proofs/artist/71bba2bb-267c-4075-8a3d-6ad29fe764d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Day After A Night With U / Stars & Water
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 0xb4607b0316644f6dd8c9b75f5ebe45c209528b5d5b3ff139e04882b11367606e. 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/UKN6K2001188.
Trans Love Vibration (Eris Goes to Church)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fcf00a84aecf88faf9a8c3c9b7c8326d7663bf2a9863bc5830205e10fc749a. 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/UKN6K2001189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98248db7594ba7a0746e28a7141ab623d95bf32d36d04926ad9f831fc8f1ccc. 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/UKN6K2001190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a722bce0561c16f4b4a5394017565fb1b0f793004254144685d99e6201f643f. 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/UKN6K2001191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ebcd514397c26062b71561459a173cf1202afb6ba9546ee24c6801a39046d4. 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/UKN6K2001192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fe9e79d2264c971d8172939a31ad7d6c4c9aace29b735836b745440da3a793. 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/GBJX32151001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a5030c90fa5e86446f9494a4be4c725347a633503ead6e3fdc48477d37c8d. 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/GBJX32151002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09f49d65419e8d19ac4c555652c283c3665f11ff195bb6ecd4e7262c8c9c84. 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/GBJX32151003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae66536f180523f44b350d0c91cce282a5b03dd6e15147422d3f5c49aba9192. 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/GBJX32151005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2963bf07e518ff225a40f3c86d57415a6a73b085cb609152a47c15317180181d. 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/GBJX32151008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257bc0ff81e0ec377a4a1324ae87a55eb052f1106ed0ac34e7efb8dd34e5ab95. 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/GBJX32151009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4142fab990e042d2985fb0a8d959c850b06dccb6ad830357b211551eebb8dcbc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBJX32151004.
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 0x25721a7fd5a1e0c49a7c351be0d3d42350d071d3d907aa72a0a88e01d5850d81. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBJX32151007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5dd0d912eb18b0aac4d8685565273972c2171ae97619683c54a7fab16c0d527. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/GBJX32151006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bd6640727d2d97c93c02c2a730d1a35c6caff7079ab1fa64d76fad5f3e360e. 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/NLM971900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b5c142a48740df24d162b73fb7a66caf95726df34a10350d23cc90fb6d6eac. 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/NLM971900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d4cc1e721e9cea3e45d2fc3e53599cccc3074b3c3de49f732f6f4d9feded8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLM971900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0249077cceb4e88c705e0c191a59fe4aaf90377b2c1f1c4fc15fc953441e44. 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/GBEXH2000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeb52687ae893ae9c20fd0553ea30f21071976b76ae51cc9dffac8faaece209. 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/US3282004401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe303299ef280849fc8e8bcd2354b944602b34024de84da5a24703237972c10dd. 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/US3282004402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f540900219740ebd3909fa9976c457c3b7afe93b4e20050900112651d960c. 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/US3282004403.