1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x070e5ccc7196aebbea773544d410757a6c16a661da777503a05d8a60a5601ea5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fce67b66-9d75-414a-ac2f-0b91702ec1e8.json and https://artists.proofprofile.net/proofs/artist/fce67b66-9d75-414a-ac2f-0b91702ec1e8.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 → block OTSBitcoinBlock must exist at that height 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 0xa482386eb455f0a772d9bd4de0fd74ecbe0bf4876fc5ac7392566585de7f32a1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/AEA141756456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa482386eb455f0a772d9bd4de0fd74ecbe0bf4876fc5ac7392566585de7f32a1. 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/AEA141756456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb282c553571c1b3fa26c79787a9a35613a6ca02ef9bf28879c15301634c0e460. 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/AEA141856532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a6a15e4f60ff1e3c715cdfb5c234fcf5217b7aa7ea8d7db9b1405b1632a86d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:25Z), 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/QZ4UU2101213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35630b16d21c38bc1de0c039750f5003794d87858a40ee17e643f8622226ead0. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZ4UU2101123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414435a8a30e69e5ea36a6f103e4d9792564f0afec8726f42233b96844fcafa. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZ4UU2101126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1ef43700b06854c4cf5aaaa490fa0bc9dca70d86e7f4c58c5f0e175dc10914. 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/QZ4UU2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5944c61c8d81ff8407f9fd1a5e9d09619fae3076a4bc6966edf7c2eb89cae9e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:17Z), 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/QZ4UU2200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5944c61c8d81ff8407f9fd1a5e9d09619fae3076a4bc6966edf7c2eb89cae9e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZ4UU2200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6ed0c41b43c05b28bc16762a152b604da09bf54a9d1b3d2b699a1c88635956. 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/QZ4UU2201501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff210a16970b9abc7f1470013614710a6ff98fb5367c48d1a55086de80544553. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:44Z), 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/QZ4UU2201548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c0252a061d5626133665fbf7cae07663cf76614741ebf2faa3fb8631b24d1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:18:57Z), 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/QZ4UU2300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d42ea0dbd67dcd3d53923d67064cebbd7b7dfc0ec335a8bfd2a59eb91b1d366. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:34Z), 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/AEA142301787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18892128cdf8dfec86732cad21b270b850c0cb1ba0fc7e085e8568f30e8eb49d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:23Z), 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/AEA142400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0c95fe1afd80217448f0972839c2613d3ec4e2b4d3dd666a9822611d7bd579. 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/AEA142400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79870378657712df970b485ec3f16d35b4f2b224020b258ac2ff0c520c5af653. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA142503337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900c557ee41724d5369c4871b085ff583f8f660ee6b09eb7f87d229706c83ecd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA142504677.