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 0x78989c3366c97a4f911533567a08ccf8c01d45a332f2c5b11eff73272ee22b5c. 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/eed6704a-4722-40ee-9485-b1f826d0d2ef.json and https://artists.proofprofile.net/proofs/artist/eed6704a-4722-40ee-9485-b1f826d0d2ef.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 0xea9a774fb3067709f61545400f3ef6cea3ef8e0b7e5d0cfcea16dd84c0a09952. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:10Z), 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/DEYX82231619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a8fa8cd840551252a621795a6980755939ff82fb3cf9a227115c07735160f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEYX82231620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25fa68b7975e1690f33a7b63c6e7f44b64d4a511d86f771f73728a839f0a816. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEYX82237007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3fa7dee7326a9b7fdffa3f048ad04fe056b50fb9c4daced1a6e92fb0696cd6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEYX82237012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1674c568bf7580130822e3c28254d37a7554d90f3b356b7587997e015cf26450. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEYX82237009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426b00361766b3a9072344728fc51546c00f7cfd1222e4dc089bb38b047fed60. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEYX82237008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320bda892671e1bdfa7af2731fa25e4db63dabf05143583318f0420d3f03899b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:07Z), 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/DEYX82237006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8039022ef8337e3efdfea8fb0291f69207889ef6ea3b99edfc23a88d17687dbf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEYX82237010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6583c55baca2fa41ab09f240d2e649fc5278bcd0636c6553594d55ff42e3c017. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEYX82237013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219a444700f6c0c55bd1c189b2d0cfdecda866668730978a0be79836d4ec4c11. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEYX82242319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76929f24cf88744ba0d7e7b24790f06d348acf891414a8d784f68a73db3fe5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEYX82242322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7872f7a2801dd808010eb267b3c39ef3d287cf34b920e3c03bf7bdc4fcf8bc0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:25:55Z), 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/DEYX82242320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab1aa91473698f158627a54c2817a2d13edf32f166c2af26d68e15cfb650b41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DEYX82242323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769aa07f248d92f4c5b834ce82d12e27fe469ad9799f9584933dc2e144a2fafb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEYX82247032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2d9cfc8c0b36afd3bbcc59aad667342eedb33b53d6d607ea3b5c580bba88cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEYX82247024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ae67dd1cf5980d9139390e80a4144e6ab51a4f7f67c96fd31f0af7e0ebb84e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEYX82247031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3aec1c6b4d1ab2bc224db401b3b093da179077197ce4e031d347c5be01f3aa. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEYX82247028.