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 0x685a08b76c5635bbd967cb9fb5e8a530600d7c98b7b9d26474af2821f7e0f16b. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f094db81-b756-4d06-ae02-55601c709ebc.json and https://artists.proofprofile.net/proofs/artist/f094db81-b756-4d06-ae02-55601c709ebc.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 0x3d6ebcb1c4137fb905e356ea05305ef40f63511364d6425285e383abdf6f79f3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAEZ2041552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674c4f291003ba29a42ea78504bf625743a10495dfa8c065e77abbf6247cbefb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2399329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e3ca477b593cf21a2057a9f3bc5b30d690c15347a139ffd48325046abf415b. 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/QZTAZ2399331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46441cfb0bcb80d1d400cf25e8ee931e0c70c076e8bcd1d1d0bb93c470057b60. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES52336684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843eac22eba237f0aa8e98189d7cfa6d5619cddb7a19d1d0e15108a6efde9f68. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2399332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adcb0885cc033c6971112152fab336a87a4c4e4c05dc3ddf30e12eae4aa055f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTAZ2399333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51efa88e06f06c801f4fbc914e736cb17f459465d282e200d79b82ccf66d2a0b. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T23:32:17Z), 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/QZTB32270954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50018c49dc4eb436d59815ca6ca4b6252a5c5024f6e91f59914ba119f4568c36. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2399334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c2e3ba78f8d133caadc0e87d83630ea256ab455dca08b965ea0cad56cfab3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPLS2356185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9ec15642bc5e2531e22097094de902cdded5acd0db0b21d6df2f7c3ae10b89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAZ2399335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c2e3ba78f8d133caadc0e87d83630ea256ab455dca08b965ea0cad56cfab3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLS2356185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51efa88e06f06c801f4fbc914e736cb17f459465d282e200d79b82ccf66d2a0b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZTB32270954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8a1dfa1a5c3fe9f5e8b5971fea9cbd96a0e9e4855a1c52011317dee487f591. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZDA61893874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc246b313adb8c926f378e1a595c44dcee521523dedca0963b23846a8ea4db669. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA61893875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c723517209c49e8739cc7d1403bc5be7942f3b193ddf99b2d9830642121e95. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEDDK2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5942d139367a50a36a2624580dbdcda7e894e381f03da5d0ca3d914fbfafcf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEDDK2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076a989fc8b03f1110f57fd3732c0a905883c0caca25c12426ae68184f7d141. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEDDK2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fcfe83cb3b132a9c53012cdbf2509f15e856bb9eb66391d2565a5cb3c53dd6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:18:00Z), 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/IEDDK2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4427ae69d49d73e1a1808b6286cfb3730c0ab39a4eec245e54a40c9600b835. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEDDK2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a9f42138b7f7d25b76bf26fab928b8bdcfcf853865fe6a449438372d7d1c9a. 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/IEDDK2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932a3f490b05a1b363d082bb39986c514e03be76561d36ca5560f5c046a6db3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IEDDK2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8782f87c66cb1a972f046372d253ca5365249a9347a4499a1390290b0b5fcc. 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/IEDDK2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3908367fceae45adf756913f6989f08211569f2bfb596b9e6ba3c0ab6fff3ca1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEDDK2300011.