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 0x63c05b8febfa18bdbd76eb8af20a7a4c8ceec8fadf81a512a28d5cfd7c3cb754. 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/069c63c2-a604-4a0b-929b-06f9d11fdcf7.json and https://artists.proofprofile.net/proofs/artist/069c63c2-a604-4a0b-929b-06f9d11fdcf7.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 0xc0b0aeb3d3841537293a24567903061d5801a3f35f81a8380bc49a45ecb8ff17. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:34Z), 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/FR59R2069008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0c0fb4988dda1812aa660c4dfe9f1420444989abee5b7c15ee54951ca259ce. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR96X2076785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa677a28f5348f327736c50b54175a651b7dfcb2c4b19dd9b770af65191ed8eb2. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR96X2076787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24724ef8830bb531c7fca576bad39dc6a2f7dfb7c5e36bafe86bfed7f08dba60. 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/FR96X2076788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fac1ddf0842fcfaf8ec85665326edc4577a8aae00a18854ba1d590d73e9495. 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/FRX452142194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80cc54287324eb6bbe17ceb2b6b77aaf9ae2fb7fb2a23d20075330818e9d6f4. 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/FRX452142193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea55cebd7482c81adb808d1a0aed2fce2e835a71c39e3e450b15a6d66e9f4af. 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/FRX282326186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c65c7067d3623c008f0134bd48c7ef4468871e609294112a57f06a0072af6a. 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/DGA072434960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfd57bdd6e52833f2c2cbb26b359884afdede8625b90d1d785bf4ae83e8c62f. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DGA0T2452733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c219fce2dcac69bdf909cbb3fa98bdf3d3d23f66d7734938b320e42d7eceb. 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/FR2X42503878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d4eb4ebd443719b668921080ffa8deda3ce1a92dea174de49b7e058e74c55d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR2X42503880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe314dc727d164d13eeb3809ad2d267e53f20a5c61c3a4bf42adf40892637748d. 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/TCAJO2578344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b6bc55eb550b7c83d662d74ddcf72f03666e1c7fb8192e22e9a0c02135695f. 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/FRX872519334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7f0b559f0b1a394422bd30a50f8ad9bcc43f58c08a26d1814a1807703e2f78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA052570141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe968c6ae2f2eedbe86d517b016079575e5071d1eed5f37746d0b62eb11d96adb. 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/ROGRA2400778.