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 0x19f800303de5fd2e5381f4248e0263b3b34fb6022d0dfbbb36688b9bc1e641c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a980d4d6-696d-442b-86c8-b131e5079f94.json and https://artists.proofprofile.net/proofs/artist/a980d4d6-696d-442b-86c8-b131e5079f94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x29be2564df4076b03e1f19e3ef1db04f6e7cdb7b833e7fc374eba42d7d996995. 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/ITS782300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12f6dde4d3948d794e9db8a30f602f933d7be7d9839f736ed2c925584b7875. 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/ITS782300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562665a4f958537740e8bc1543c29bbd0d45e89d63f03fb238cc70b4694f41d7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITS782300449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4387d194a34c385cac5721406129a6f43a7cafe90bf7e5901516936d7e2ad3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:22Z), 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/ITS782300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cbf2b65685e1a102b96bd5e14367f82cd1f163e13801d20c2c62ab25e0eede. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:49Z), 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/ITS782300873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b00f120b6a2fb59a08f6ef3283b18e67bb59a3dd4ec49bd86f741e40f9b7dee. 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/ITS782400458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d1add4f38960a927404ed5659b9c792b0178da831270e2031d70d747b1085e. 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/ITS782401037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8043662bd7517383ac5c0520a3b66805ae0737c93bedab700fd4704629c600df. 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/ITS782401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda7a73027615294c28358ffc6b056b900bb4b8ba75e1ca77fe94398b0679f8f. 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/ITS782401630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed36d4f981c23fa4b5869f9e8e2b6789adcc59164d6e038ad7b40b553b407079. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ITS782401891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5099e87a412b32bd26fc8cf0ad4ff59ec0ba12dd9246209484e944732d49fee. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITS782401979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ec26a8981e0573e82d24f2ed6912e61976f26c5bc5a5e6de18accc00f891a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITS782402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488ec26a8981e0573e82d24f2ed6912e61976f26c5bc5a5e6de18accc00f891a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/ITS782402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa12f6dde4d3948d794e9db8a30f602f933d7be7d9839f736ed2c925584b7875. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITS782300437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e1826935d75e605fb549e90b184c42ac7020bc70285e36353e9051f4e613e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ITS782401224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b5031cb50c061de087acffefeec6307bf557876394d4693a34c394ed92872. 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/ITS782400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d1add4f38960a927404ed5659b9c792b0178da831270e2031d70d747b1085e. 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/ITS782401037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5099e87a412b32bd26fc8cf0ad4ff59ec0ba12dd9246209484e944732d49fee. 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/ITS782401979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed36d4f981c23fa4b5869f9e8e2b6789adcc59164d6e038ad7b40b553b407079. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ITS782401891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800552d8de45365df3e438db8cac005832469eed560d97ddf76892b4a9e362fa. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ITS782500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f24eeb6070969ddb528b3b07e97b33d8064890907f1466187c3fde1cfa7bf. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ITS782501203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2812522a0c2c2345ca8423a6a3c58d75355fe47249c273419d2e15bb89d78a2d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITS782501431.