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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 0x2d773c68ce27d283ee23fdd8a69d8342539b5cc7d3b2930ba6dd0d83b0fe3397. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e675533-cfb0-4038-a084-7c6c830c0729.json and https://artists.proofprofile.net/proofs/artist/8e675533-cfb0-4038-a084-7c6c830c0729.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 0x391cefaa6c562336ffb0f63d164d385e5e400b62917d576f4e7a39d7e4770440. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2575487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822596eab6e765400de23dec01cd5b74c8c2f97adefb7105a784fdbce9f1a09d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBRKQ2575488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391cefaa6c562336ffb0f63d164d385e5e400b62917d576f4e7a39d7e4770440. 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/GBRKQ2575487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822596eab6e765400de23dec01cd5b74c8c2f97adefb7105a784fdbce9f1a09d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:57:51Z), 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/GBRKQ2575488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f08bf8b760b2e25c054092bb27161c7aec69735f8ec288360b3f2a2f1b036. 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/GBRKQ2575542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce6535ccd596e0b1bdea5db85852b7fca958ea9a9358f0535d6edb1dfb354b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GBRKQ2575543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763b68664e05007a5ef57947e37eb193e89ba7be7a0b4578bf11dc0fc126b468. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBRKQ2575544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd3d11d9d72f45c98f9507e2941fe9695a7b6c99d0e54621b0d2c6b76f242d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBRKQ2575552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da790fb774b650aca35c48793178670532dbd144ea995cbaab71fe1c1347e54. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:09:54Z), 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/GBRKQ2575555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05fec389370f38549c45bb47278b2312b30792f46ff41db738656fa645847f0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBWUL2583522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2ae13381bb88b41f418039431e8780a9c66c7827bc9e2875fca41bfad16ee3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:22:12Z), 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/GBWUL2583523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c2daeaceffee88c66f83d5bc2da8913800a3e0ca06737b9ed0ab4e470c271. 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/GBWUL2590657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e9a33561cf719ba03791663f3314c8a2685eaf2dd3d0a25742e2485af9222. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBWUL2590658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7d172ff4eed8e2e2e21077bb93599c04c17474112e161143d13125f7835c13. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBWUL2590659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1938ad0e23f7cb854711934c9fc4ebb5f9f265f03c17dd533db4696bde786c7e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBWUL2583525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80695252ffcd8e3cced3ac55dd8ff88eb3f4ff364d29a398501ed05ccd9ba76b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:15:35Z), 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/GBWUL2590681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc573f5d0122c2ab65c9c32d79bda1ad51ae41ac5f17e50ffcf85402cb93aeaf8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GBWUL2590684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd356796b7ff0f9c3d2a92a9d31d94e6ee75aadb9aed0be3008446bbd554de2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBWUL2590685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef99bc24cbc5e552fb46d7b22d971e9d0e9b766f16b785d5483c3e74bf934068. 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/QZWDD2538526.