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 0x1a298b7fce854d028ba058f2e2adcc441c67c07e347aac236bf242c8dc9a8c8a. 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/d576f3e9-bc10-4d89-be27-6be51d4b7276.json and https://artists.proofprofile.net/proofs/artist/d576f3e9-bc10-4d89-be27-6be51d4b7276.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 0x2ac5c39c16b409a4c19f8be67bad771af1138437654ec00391e6bd80be0f54fb. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX452289053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f4f627f5949d47d8a21c2aa7292fab56fbd80c1177103a252dd881fc4599f. 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/DGA062269608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d2304552ec5094500006f646632ac1122cdb33d4b918b88d69653d53c866c. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:15:46Z), 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/DGA062297270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd745fc2ec9e9892fdce28f3eedc7646c748cbad707a2f131849305020fde5b4c. 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/FRX202336268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b0bff475e3ec30047a4d07511dfe8b8a9a25dd1bc9b04a1185c8c5ba05946a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:20Z), 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/FRX202389915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c509b373a1a4a6a0c71108817538b2500cbd7b45daadab6f210b5177c1f51. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FRX202389916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fed3acd940ff3f6910744411499b91d6f329b4062bf668bfe179f91ff3c0d51. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX202389918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f24f5b34d60dd16729fb0e617e817423576471591130fa70708bdcf0b96718. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA082212623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c6784065175dd024528aeb70629eb3142b97e391fe5d46e3dff4984542018b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:34Z), 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/FRX762322238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c35b5cf16187d1a8fa5317755cdc2351ed4cca54e146f6289ceaa84880d556. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX872343217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb17fe42b18665cd4403ac3ccf971acebd16f09232626fcfb2363add278856d. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:07:03Z), 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/DGA052383222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f21d7dc5811d3cac9d9b59b7b8efa58b7e8a2bfb8c85bab866abd8ba1cf39d. 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/DGA082358755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b79ac728f8f8304e5f7b38f374258e2511360d0655ca9d198afc7dd9b6573. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DGA0L2314553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3610cc3fda75aebe4ec0b02048d380ad8985516f6ca0138c0a7592dfa6fecb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DGA0P2357434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b200f04dd79744043e20bffc19675c1ef8a76607c8d8bcf2756569060b152cb. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:41:02Z), 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/DGA0P2377183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343fb28dd7ee2cedcb3ac670546801abdbb26b62c166c058f785e28b63bb3c26. 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/DGA0R2304668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4515f4c7e5017597e3951f60af94adde0704fe48c5a07c0859bc681e6f233fe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X42400819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9f793d776c290ecca166b329bf4430833fc4f6e77f171e2485f0fc1d963c12. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:28:04Z), 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/FR2X42400821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b06e1c935efa324b119a4a58419a6038a10139f42f97714140db42cc9a1eb96. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR2X42400822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778f3d270f8cb938f773fff30e88e93c67f6b51c30429c90eccc55e5e966fcc. 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/FR59R2493853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e2d72b326b16c2ce89883384ba46c55215c6e9b5af1c1d45b1801a3da054f. 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/FR96X2478320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb84e589fb7dced94a61818d00b7586218009fa6c00373b237add173aeb7d70. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FRX282481203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453c49ef2abb27c723b5a4848c58db7647c88d8a9b27da9788847ff76d941502. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FRX872461795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85201b57f1c8c33e4c90ace1e49bbbbaf0b9dcb28efb7fa1b42b7a9c7bf0840. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DGA052494200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60df01a10c0e75493732911fd71921529aa6c4ddc0738274c806f647aa3796d6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA052494211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132daafe79b017b75dd42a019c8e3a33d875f6c26524b900e588ee424408ae60. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052494212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d089a3fd1df774ba133ccc1f0af5aba0b1c440f146ac16eab974865230c356d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:58:33Z), 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/DGA052494213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bba01dcae89bf7be55a494dbd927bff93e62c0ffd4bbc209f7aea806fb3aba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:01:17Z), 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/DGA082455881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b6462bbc4e5aa52e9a61c7cc1c828bb177ac5d4ed04d9ac3df9d1e11744bc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DGA0H2435921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89c9035d2ffc66ec2cab16f4ef9d639f8e08b92c2bc4637619b3d3395d11cd5. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/DGA0S2468612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbe30b31128694267a1861c4d520e23861f52d9a7591631ce3b8e58ceb5e219. 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/DGA052568048.