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 0x0dc19bdfa8524c2a4000be6dd7cbea4ccd5dd1bb044cee29ecca2dc799f05ca3. 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/42a748de-0084-4f4f-b2e0-6dcf3a1ab4b4.json and https://artists.proofprofile.net/proofs/artist/42a748de-0084-4f4f-b2e0-6dcf3a1ab4b4.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 0x1050652f43c859f13f94c3968a010e6fb445444b23ad60924bfb6d1a98bc939a. 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/QM7282423561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db1104d84d9d7e9711caaa82e3543500657f4e2f5b7f2ad2eeccc6126041cff. 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/QM6P42459425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6027973cecc5fc1212054bfa499c8d2c3f308cf6022a434187d523082b1a0e85. 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/JP92N2229404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70185765ec60d62916128ba93db331f1e33cdf2ce108ba24ccc43f1f5cdb56cd. 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/JP92N2261583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21818961bca0f65276b97fb71ee0185cb9cf7318ad2709028c741bca402f9fe. 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/JP92N2220392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c88a66784c636c482f43c0140732a9326b6f844b5f1c2a7e405f0d1e1fba7. 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/JP92N2206836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5641ad9736c1a5e317b4f0fa1cc60a0cdc03074367c280e8de0952e90e04a1. 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/JP92N2200962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbac28c8a6f2db34ba161549fc3efe73ca768e774defead9dd8638cc3c5fbfb. 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/JPB602182294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9607591f887d9d944d8e8dc5fb9920d412f2796a88995dc01dadc555282053fb. 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/JP92N2206837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f562cb513baf2b54be3911662b2ab654679df54978eb0271f4a448590744d76. 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/JPB602163305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54eaeb7b137d6f76c571c87c289ce161e98140dbc13861002742a1a7090d7cc. 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/JPB602098234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234a008088ce3d684fd565ba9587111726deaa4d9717cee80c3d475731a6cd95. 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/JPB602190904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedeba6072eee076afa9ea5c00470de3727aa691bfaf9d2d6f2d21a903a4814b9. 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/JP92N2449001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563bed7a3eca122d2a16834cb32f96cece4b487f52275d009917eeab3405ebf. 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/JP92N2441700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade8e962dfe79f52194055fe7dd978d3a326d4197ddf2746a5972fc18d534a1b. 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/JP92N2403349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b1988a80fda4f0a6e68e0031ec5c91be767d663b287bf4cc84bdc23a0589b. 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/JP92N2382899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ffddcaea97636f41baf551272b94ae3abd772ac691e362ceb30715a9fd4361. 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/JP92N2409926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade8e962dfe79f52194055fe7dd978d3a326d4197ddf2746a5972fc18d534a1b. 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/JP92N2403349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b1988a80fda4f0a6e68e0031ec5c91be767d663b287bf4cc84bdc23a0589b. 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/JP92N2382899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a595fa02fbbbbbb4671f8c79cdf0afdc3009ed0dc87399ffbe3a70a73df666. 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/JP92N2352252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70185765ec60d62916128ba93db331f1e33cdf2ce108ba24ccc43f1f5cdb56cd. 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/JP92N2261583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6027973cecc5fc1212054bfa499c8d2c3f308cf6022a434187d523082b1a0e85. 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/JP92N2229404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21818961bca0f65276b97fb71ee0185cb9cf7318ad2709028c741bca402f9fe. 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/JP92N2220392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb638d9ace4753a89e4e42dc58f35d21213afb04ce7e828fc759456cb36bbf72e. 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/JPWP02000836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb638d9ace4753a89e4e42dc58f35d21213afb04ce7e828fc759456cb36bbf72e. 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/JPWP02000836.