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 0x0dc598eb0d5a1091af509929b5c8047ef14aba271272775ebd51a5fb69282391. 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/203dd0e3-57fb-44af-8efb-f21171a804c7.json and https://artists.proofprofile.net/proofs/artist/203dd0e3-57fb-44af-8efb-f21171a804c7.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 0x378ce8c4d5162319e9c08a3a17a67e537f61f22210bad75cb1a182f50d61a68a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:11Z), 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/JPBM00401206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9777f0316e2ee5af89dc0892aff45a18fcd566304cc449e4c2845046cae8cb2c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPBM00401207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363d435d1fd4c4c96632ed668c61cdea72e54425e6c925dbb95b8b76544c40db. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:14Z), 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/JPBM00401210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1a2c9557a7f800164ddb042d6da24b79375e63c193d77a3b8da7a4a880536. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPBM00401213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c0a8e390f1c01292e2a801647492f04873a5241529a0e581827e18cbad051. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:13Z), 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/JPBM00401214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303ebc5f694f640e1b092e6744015d1c9e75f8b0d2721bd4fb2e00716316958. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPBM00401218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63818b2b38f0c9c4fd14460ded76ef3965ea095847e3e2341f05711aec89dd90. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPBM02408002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4939f32948b491f66f4243f3b0d963984bb4f7fcf08e887ceaec9db3bbef2b51. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPBM02408011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebb02313710dbce3e0aeb03bd8e5452cc6618a833086777d21d008824aefc46. 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/JPBM02408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d61dc10606cb7345a6463d8e96eb4b429c7205dc21fada3c6ac1f7d8d03a40. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPBM02408004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb454aaad12d0e146dcaa72a553d5494ebddae7cab2f4e65f95e93cc46e2901. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPBM02408005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8262c3b3ce2bdfe0460e21df2f950c8ac4a2cacfbae7215ca0f0097ea96ff258. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPBM02408006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c3b97a131f5da2c2a6c208887d20b8943cdb115256bf88fda5f72123c413a0. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/JPBM02408007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293538e70a0a75f9b2b73dc274b24102c9dbd27e9e5ec37f168b766ba978c82. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:08:03Z), 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/JPBM02408008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8936955485a96ba6e0e17443148521794483b8a9662369cb56f50f3502f29. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPBM02408009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cbf22be7ea784edc5370e4af36c3d5dfc545410e2e474eff741f9cb80af0f3. 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/JPBM02408010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf3b2e4f37c47a052dfc670caf966dd117fd400282053d1c92c9621677244b8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:21Z), 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/JPBM02408003.