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 0x488cf214c2c272d46702c0053bb129f575200d53d634ae108817b924791699c7. 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/2cbf831e-5f58-4687-bd31-7a5c2d011db2.json and https://artists.proofprofile.net/proofs/artist/2cbf831e-5f58-4687-bd31-7a5c2d011db2.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 0xb61ade2a6c5d2e0581701cc601c6f203d240ace1e88007aa2a79e0af01eaaa84. 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/QM4TW2270408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae4c83aff5ba01478f1ef807eb3cbe4bf7f6df575a1bbb2245e2747e0c1bff7. 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/QM4TW2296674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa469a738f90e07e2898700cf6d8ae84a92b2dea39c730208f0201658773cf2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:46:50Z), 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/QM4TX2296163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bbece787fcb553848ca95561a56c930225fdc9c37aaede4495001ac7e4f83f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:14Z), 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/QZPEW2443382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963bded8a91b81edefd6c4c1c835447ee2e0d127466255240259f59f0125457e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:31Z), 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/QZPEW2443383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ba97221935973c1340e2c6c23a6153ff8e80769861cddffd7a2da209f1bec. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USANG2457979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc2d1f6f3ff5982bd98f6044575232fcb49ab926d6d5051d2dc472da3501aad. 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/QZNMW2482681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fa1cd6fcb87c5b8b37c1628e5f551242bb02a9099d6a0c43d2ecb0ad566061. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:15:56Z), 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/USANG2472195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5def3e9874e0b479723df7a5cc2469b232dde23f99e8514ac0f6a79eb2a9a22. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZJG52563363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa342fbbbca4126abef0668669dd558d10579e73fba4e224e0befa132dd1d1a16. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNMY2476279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5def3e9874e0b479723df7a5cc2469b232dde23f99e8514ac0f6a79eb2a9a22. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZJG52563363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b51e01152d10ecd49970033664e59335ab59404654b783e8d432fc72ce71350. 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/QZL382580392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76475f1122bbfda3c112af8d926ef10d109aead80ea7bb1e046f28eae2b25e. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMWW2531221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76475f1122bbfda3c112af8d926ef10d109aead80ea7bb1e046f28eae2b25e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZMWW2531221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15911dcf9d67e5545ce9e793b692da6c423f63e18f4ace57f338aa2f0023a427. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:59:15Z), 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/QZNB82561215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76475f1122bbfda3c112af8d926ef10d109aead80ea7bb1e046f28eae2b25e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMWW2531221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123422240a38546bea5e2d40065def3ef1497a57c7c469157c511e4ceb24f7c4. 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/QZNMU2598219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15911dcf9d67e5545ce9e793b692da6c423f63e18f4ace57f338aa2f0023a427. 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/QZNB82561215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60b64ab49cc92843618dba88557aa50d4f5cc68e409f4a539c67b5300099abf. 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/QZNMU2598220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c61fcec5b95eeaf26d475fbf8d0d6546e00e7811fbb0572e2c1933dede6d39. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNMU2598221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b5b35344879cb058d9ec9959dafb5ef90ef3303b3dbe99cc3b8ac5960ae63c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:42Z), 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/QZNMU2598222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62374733e4353664f2de45f634a97bc86f4de90ff7d0d745fbb4009b712192a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:49Z), 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/QZNMU2598223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254331c24dfda668d48520b1f8c34e3e84e126185e930f258f583191beb4b842. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6QE2482253.