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 0x4a6423bc07dd5e4da896f3b87658eee42c4d132fb09834058c51ed2fcea06e80. 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/0592f933-bddf-40cd-88fe-d462f74117b5.json and https://artists.proofprofile.net/proofs/artist/0592f933-bddf-40cd-88fe-d462f74117b5.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 0x2d45b4d75ae40576a452ef57d52e6e7219f6bb43a522d5818342d77b7ab47885. 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/TR0171501209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0777eb466ea857997ba634246223ac8ff0a2ce90a047fa321b72caf3ba960d. 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/TR0171501210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f6fcad1a107e7449f144fa936718b25a86de2b13a76c17dee84aefa2fad441. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TR0171501212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43851df6c1cd7b18ebd2050ac45cc3d61f2af24df4c547521a21323ec6132cd2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TR0171501216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4243a018e700a21c1aa69bce4c32072ba8f42de63e6021f4edeebd50ac29528e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:53:37Z), 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/TR0172101930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978da429bb85312d67bfbfa1f67ffb85dc4e2b6ec2233303b601900a4ef1dcbb. 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/TR0172101931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f81af96736a0aa4d23a337f52404ba0aad5d24ed04ae01f007fc3287ab0153. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TR0172101932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0724bef44f313b0d6b7fc9d229c1f35a19420817a81b003dd1b49d803d4abf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TR0172101934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9da46444377126b33a6e6101e4c87c9864fb38dace540c9a25f3c65b779033c. 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/TR0172101936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4d00d0a6eb690632861576bdc21004ad7786c1eb843dae9c3b6c2cef9885e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TRCEI2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd612b1e02b1ddd17d716e3691b53ebc5c29fea8126d76c96eecaa4fba8938c04. 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/TRCEI2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336de2166c923064f6661d75e476a479019f281afccff1ffd15a3830671c841b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TRCEI2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7737315edd1d3bd2c10333e5eca740cacd1241431bce9b39ac936294185fe773. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZZ762468227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938e5df10ff6048e0fa4f8ca0ca583dc6b548245401d7cf54bf718db213d091. 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/QZZ762468157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0212eca51b2b103fd6f2ef475399e4a3127eec7b0e60be3c15f00dcd79644b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:39Z), 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/QZZ762493858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8781d4fd4385331014c54548403e484d602cafbf62d6ef1364e266ad3c623ef1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:11Z), 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/QZZ762491899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940df9adf451014ea2d7298bd56f04f7242f0d00f0d9576c5b78b67b7af41f8a. 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/QZZ762493805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c64a50ee063f9a9791ef02b755538c7980a0e5bede7acb829bdbedf48c8f1e. 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/QZHNA2569009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b2082aa690341bb9b8cb5d1a2aaf31fd5fc0a65e70ae2de6962c4f421377ff. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:20:48Z), 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/QZWFW2543809.