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 0x2a187ca3d4210d94111579884df4eff375d9d6f13889eb7a6e23946e1036a65c. 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/b6293023-3a30-4f39-a410-3907aa089b73.json and https://artists.proofprofile.net/proofs/artist/b6293023-3a30-4f39-a410-3907aa089b73.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 0xcb464ff4f1b69fd7e0b894f541fc9d9217314a73cd5c52a52c72921f72e989df. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFZ42094193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ff985b39c059b18697d05522646b8e4061a24e5e97052535c0fcccb73240e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZFZ42094194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b92f36c88453b3cef9a0828ddb4bda566c825626fbaffc51dad3bf4b2a37026. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFZ42094195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a26d815c1d78bc052dc1bff3453602687ebc19933b47ebd5a7aa58a3117e3e9. 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/QZDA42187806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19722b3e15e2eff69d2074c9d41d9b8878501a8cb6355b0b95013639ee9019f. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZHNB2498012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3413d8d5de3dddf180189c3f811b6860f954ca616b7be6e3b370b21c1550ea14. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNB2498013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc7128531e433c4b7b05dd64d16ca5abf3eed546614bc8b8261b58175e1b86. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHNB2498014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f091867ec44be40517a0f95bdcff00e2b17f3736493431b02b4716085e741. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:37Z), 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/QZHNB2498015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2dd7287085035f4f38574bd2a97919ae16b866cdc37ae244b94992e6e0207e. 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/QZHNB2498016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112921c86d96127b62b83de476c3b4720f7e684cf8fe1006cf47b9206daf2597. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHNB2498017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd73a6a3c967357365d24f0b273e7daff298f15d862e0540e30aee7de956aff. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZHNB2498018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4cbd68bfe4939b72e7489d8fe3ac12b3d1f545166f558e31ab52a39673966b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNB2498019.
Nobody Makes It Out Alive - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52da7b8e4e04df41645be227a6bce6b85a7e566579d16b9ca9ea802f182a5b56. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7K2442859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38fec55e1df3e600768a15a48f8b2a9158e2831db4d31b16ec29724f4b1df7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7K2442860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe84202d99d4de581b04c389ee40cc4a6f5b25a0dd00d0b5a45e8228506e16a. 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/QZZ7K2442862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef73099771a1322f839c41fcb02af5acfb50e90396c63807e710897c6b3850e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:06Z), 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/QZZ7K2442864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7cc9e64d33286478d4292cef946508e08d6fbfde94275166d6f8673d8e875. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:58Z), 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/QZZ7K2442865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc88c803cdc8016412c045cca68cefc07a33a6d705699c779fd98e056265ebb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLS2386927.