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 0xf69639af46dca32bc832f824693effc26df3cc5763adaf862f6d084776ae905b. 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/6839efc1-4f67-4188-85d2-e690a68e3e95.json and https://artists.proofprofile.net/proofs/artist/6839efc1-4f67-4188-85d2-e690a68e3e95.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 0xed92c0528d730b3bedb8641b507b739aa0a7e9d990bbbc8f1f053b045b5b6558. 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/QZMEM2428324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925a1c8ba0351340d18f0eae2d862a9a1d71206399893ad30eb9be39e8f066c. 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/QZMEM2428329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3774f6898db8358ebd94707f7c02dfec8c90ef1fd099df3f726496ea6055b3be. 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/QZES62511125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ce9268990575a9ef9a2757732b0d93c3e46a1575dd0641b2be67231f67b010. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES52596381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671c2dddd49ba4701b820f8f4f44db2ffc6c9b7285f14d4e8bf2551226981d3e. 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/QZES52596374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7d168f638d99cafce2642f2ff8f91c0037f14565a3e1e8e5c1a54e5285744d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES52592310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcb96d5bda49a46fb3d36fe0a5adc15bde4c7f878692b08567f820198be552b. 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/QZES52594868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c789a1b674a269bccd96f605325a3b06e74684af4d7e3b41fa281eca031152. 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/QZES52596377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e516c3b028015de673c585e6496b92a69a265070864a658dc45b2a87300b0f8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:22:39Z), 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/QZES52594864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8543b50f753ac105c0236c801e66c248bd66392e3c43effad1e444c265da59d. 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/QZES52594870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d93c851ffbfe598ef87d0a98574dda8ceae61ac8b06506088848f1de4528e4. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZES52594858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f805ad89aedfbecda84dd1aa404c9adf332aba3063ee583caec6fc3fec4cc9. 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/QZES52594872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f881fd285123cd7e5c8c547256021625f88e3b4eda18b4d6e73d993c31d3c. 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/QZHN72554947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0c98c8d41ce8bb3ec70d6b682592c539b882e19e0eac9e7a286ef1c10d2b2. 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/QZHN72551438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fb6a485439a35701e16fcd9e47a9ae2866e599bdaf0d08cb428dbfb054be99. 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/QZHN72546659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306efb3f3248bbb943653c5b60912cdeb6b5de322a71d1f3cc8fb1b3051012d3. 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/QZHN72554938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642db09dcf7ceb8c194f3f9d878f92be8ecaa782640eaf6d496550fc2e3f28d9. 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/QZHN72533283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e350524507c53566181f1483abd4397c465c60be0e068c7d0ff3581d084943. 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/QZHN72544999.