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 0x47a4171986aa4aed5777a7f099cb9f78bbd0910225e1c696fb0b602e0935f2cf. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9a62192-6ba1-4c99-af06-897667f2f481.json and https://artists.proofprofile.net/proofs/artist/f9a62192-6ba1-4c99-af06-897667f2f481.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 0x03b5f66ee7ed791d9e498adb966a40d2b96147b5f2053aab534617827ace9805. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:59:19Z), 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/CACWV2084066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b2247e015c5f47ef63ae9c987405b67021f1dd7442cc60d55218d098c051c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CACWV2084071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec81f863db27bc7c0b9adcb297a3b17bfd6f3f95af74b72c83abdcce533a3015. 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/CAENV1980884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d8c322c2e62cecb063876528aa0f5e84df18d3357ae1d4b609de41621e710. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:05Z), 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/CAHQJ2286755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e49ed629c2edf0e096f46f07891b8d4f204ef503239fc5e4b486ac89e750a7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CAHQJ2286779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb27833d47476057ea94acc73e12d700cfdb6a776f8edee0c2e6d6deb5567649. 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/CAHQJ2286751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea792468e9347f98e928b1d0fb97977cfa5e356a5b04c792e76834f298fcd3de. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:46:48Z), 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/CAHQJ2286789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e619b5e433ded5d2f906c93b1d6c4ac3dd3261084ea88f7c87aea77d6f7a7c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:36:33Z), 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/CAHQJ2286752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e61a16c4863074fde25be9a072d752b45a656d30fc9866ef9fa41a12ea0d8c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:55:42Z), 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/CAHQJ2286778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d956a52bc5e03cb1a7e745b0f14a465de9e79e274acc4a50bcbb9e7e42004. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:09:52Z), 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/CAHQJ2286780.
Was It as Good For You as It Was for Me?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331179cfbbd1226252777b143f0c4164ade46e72669a7bb5ca75dad8ee2c8990. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:34:07Z), 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/CAHQJ2286753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bc019d23b2cd825a807cba205646fe346a280422024f364f478cd674de8eab. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:56:36Z), 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/USL4Q2121639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff04fd3a805667be727b45136aedde68a325f1273ef22e4949790d61fa864072. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2121641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f7cde842e9bfc3f334a4c7c32a9f2ba193403efba5411a5b2c94cb304ea80. 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/USL4Q2121642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63f36a1001fa5ede3366eeda63dde0de471d7304f25d00ea38575bc14ad2218. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:00:17Z), 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/USL4Q2121643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aea9bff813117a99f8f1d3cb6a0372e7bdca706308969c67677e286f7f79556. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4Q2121645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa742bb51c182a9574d3644c65ff7903f23ea2e0714c606175c0aa9196cea58f. 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/USL4Q2121648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a017c62f70b87c7fd8bca611f39e853f60765e7822572c8f91697c82d22fc5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2121651.
I Drank My Tea When It Went Cold and It Made Me Feel Less of a Human
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123956e68e7995531666304268061cddbf7e7283c25c363a6a72d36a7219db6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:34:37Z), 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/USL4Q2121653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41d8158bd70e85ef583abe3eacfa5da4f487a947f533a8bfa33876cd027931. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USL4Q2121656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f38ff29d184c7f47d29b2dab1c0043041af1df9af0727b0b90a5b465c6ba4c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:56:50Z), 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/USL4Q2121657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2070cc5b91af702b36750c9a1ad286cffc7279f3820b1fecaf59859629879afe. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USL4Q2121658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b2bd265a6b74b860c2571bfe8cc342ea2ed6c44c82a0cab870445eb405874b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:00:41Z), 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/USL4Q2121662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1797a63b70a0bcb99576d24ada948f8e827392c924d4053d39c4af5573273c0e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USL4Q2121664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147bee0ba13728fa6ecd7f366f22bcb28d9bd848af93b6b58a5d950a9960678b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q2121666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd61ff71891dcdeca7ac2ab5954ae896b0e109f2e9caad6eecd46af684b2fce0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:24:31Z), 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/USL4Q2121667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635b7917f806cc232e66101d0edbd90118d6a146eff90aa8292fd56b62003bbe. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:11:39Z), 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/USX9P2391460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59f1996d50e9b3bed0a140516e92cf743880a3e3fb541ee90236e5d145122aa. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:39:45Z), 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/CAHQJ2436692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6d034df9beb8859bb85877eacbcc0d7ec9635b33fbf67d6b5bbdb9b568d26. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY42418819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d36ea1835aab8e50ee5e23307f9e44931c6de6fcd01edfb80dcc5e1f3f195d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USY242425606.