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 0x69deebd000ed0711e845151e6280d7a964680fe67b4a07e863d772ae32c73465. 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/3d4f8c52-1a69-4b44-b134-fc8000358690.json and https://artists.proofprofile.net/proofs/artist/3d4f8c52-1a69-4b44-b134-fc8000358690.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 0xc4cd915049897d3f3acd61116e3afbb1568751094d2f6a4fcd5d08da00d76e51. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:39:13Z), 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/UK4UM2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba404bd500d9673433b852462a64878bb71bf564ac9297a35bd08e4f5db2902. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/UK4UM2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a67dac9730046cbd9ecc7bd9974e90feb519a63a4a2509dfa5e1ac4a3a33c6. 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/UK4UM2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894a9cbf0c91bdffb876b3dfb5f79ce96a5b999d9b78a0c9967853851d8397c8. 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/UK4UM2100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e350af66de50eb534afbd60608955a14545bbe4227710dbf952591c0e37d33. 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/UK4UM2100091.
Leywole (Squid's Let's Get Trancey Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c78e40c2ef3d2775219bdcb6712d8c2c935ca6ce29c76e992ff3bd923c7a4f. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GX7JL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66bddc3dd8f4a8f6829bf015ce091accb5f940d54b91b364c69a664b7db805e. 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/GX7JL2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c78e40c2ef3d2775219bdcb6712d8c2c935ca6ce29c76e992ff3bd923c7a4f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:54Z), 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/GX7JL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb927a497f151c95c217ae6746888b0a9f4708415a6d89c81ebd54c12b90fc010. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX7JL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44532636d86c6cb5ead615baa63374b28cea3e997897883ce1d88f5f5acd1560. 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/GBGLW2300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bc15db9fc0d69fbf2fbb3975f92e30be24d4c30c6ad7d36cb01834bc500b74. 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/GBCEL2303485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11744800e0e7e170502f22604056c42bd3ade0e5fcb960a18aa394bae00d0a27. 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/GBDLM2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940925e19a24707752a17f95e71942c2d658cc260ceceba48d4e7a919fe64f0. 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/GBDLM2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d5f0d94f3227fcf3d70cea2b70bbb3b48c71d27bd4f2c7cf101be489a3e2b. 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/GBDLM2200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bc15db9fc0d69fbf2fbb3975f92e30be24d4c30c6ad7d36cb01834bc500b74. 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/GBCEL2303485.
The Children of Shaka - Digital UK Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3013656b345d45bbccb0c6d35294d538d72f43d5d964b1816f1e2a30bb7f1c22. 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/FR2R02400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0234ed820463abbc88f31e2d187683a240722ec7d405c2ba80cd88b34895c00. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBDLM2200315.
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 0x969e18a913af5e4a62513de8f8b640b941dabb8b10d5f38f68c65d7fd23ee96c. 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/GBDLM2200316.