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 0x83598f50b8bdb3385829b0705ed483b927847b98d09b0a6675dff52452adbb8d. 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/5bb66096-f390-41e7-b247-51532485975e.json and https://artists.proofprofile.net/proofs/artist/5bb66096-f390-41e7-b247-51532485975e.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 0x7939ecb24de272b281b0795d7f0e6aa5b1a5aa5ae96f48034dff00338aca8faf. 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/GB2LD2010241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fc5e78ccdd0827d0cab791ae8c9a5ce1c9beaa253c3a4b56dc28baf79982b. 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/GB2LD2010242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53be6b54d533d6534dd374ce66cf69d0b3f09fd489e4491a0750c7e5803f3656. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608a83b1dbcb8480d895ba54f0016910ebb21ea3274307b53f38bbbf2c817140. 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/GB2LD2010244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a6593c87bbbf67141ed0465c222c48579109c6b76fab8f57151116b1f5c60. 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/GB2LD2010182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8480a07086a62b7cfda40ff6d16abfa2b42f5420eb4cf99042bf241ccbccf01. 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/GB2LD2010245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f3886e99c3eed02530eb1060a39aef804edac54cea2f962dc02896d80e920. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c7f8dad70fcecb2d93169a775af26dec81f6ba3d2b88935c047d40f5a5bd3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a7f297d1e8016fb7b3fac764121dfb4b8f4cf3db90d48582534a1c3e9d622. 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/GB2LD2010247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8da6311763e5d26c0904f22e842578da646a570dec12f0de448097ba0b451. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cce885ad518be1169a80be2d1f54fd6d9b14518b4b98a049254dd6456da1574. 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/GB2LD2010249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce89404b1987af655d7f4487061f3cd154307c8a863dc7fc78d4907692042af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac251ef022b537d67adfd3a2e2361d17846f54ae899d6b15c50df7f0df9ab203. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d226024900dfff3c065da74987e623a5dfeb6643b630ab37712d24341ddddd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB2LD2010251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a57509df19ad8cedf8ee7d0652b74bfa930ed07b59f09fe558a4b298e73bf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2LD2010252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d9e39ca20a99cfd8ea313a0a74f575124d3e0259db279fcb0f28146b2fd855. 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/GB2LD2010253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d60f042e9ea39e690e2cd7c30ce25e97def768d1d41b106b07a91d8a720520. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GB2LD2010254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a57509df19ad8cedf8ee7d0652b74bfa930ed07b59f09fe558a4b298e73bf9. 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/GB2LD2010252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce89404b1987af655d7f4487061f3cd154307c8a863dc7fc78d4907692042af. 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/GB2LD2010212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a6593c87bbbf67141ed0465c222c48579109c6b76fab8f57151116b1f5c60. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB2LD2010182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce89404b1987af655d7f4487061f3cd154307c8a863dc7fc78d4907692042af. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB2LD2010212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a6593c87bbbf67141ed0465c222c48579109c6b76fab8f57151116b1f5c60. 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/GB2LD2010182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f3886e99c3eed02530eb1060a39aef804edac54cea2f962dc02896d80e920. 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/GB2LD2010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a6593c87bbbf67141ed0465c222c48579109c6b76fab8f57151116b1f5c60. 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/GB2LD2010182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f3886e99c3eed02530eb1060a39aef804edac54cea2f962dc02896d80e920. 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/GB2LD2010162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126ffbad8f1cd4b76496ce05eaafab0a08e2adb614f76556bf924b0ccafd4330. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NL4VT2100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d7c8a23db9de508ef01e6b2f11e0e2e12440423da0261c98c8b4728d012d1. 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/NLQ8D2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361070884a1dab7da6b81b8e207b3dbfa0b7cf9f7c8ed9f675ced77064a6a541. 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/NLQ8D2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899a0645ecacafe8c07012a5350e7e619dd77ed2de2cb708f319829c322b81b0. 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/NLT2H2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057e425ee3a551a452086a20ed0e55d3e5081e9900317c8dee8bbd6c7f2909b6. 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/QM7282450729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a95940fbe6db41f31fa5cbee27b5826ad127822f1eecfcdd20b6027893ddd. 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/NLT2H2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e498b456bb6bd3c2b7767b287ba6ea5b0a6e63bc47d12c0d426611c3fac105. 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/USDM32458701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a23f5a927775a285dd6d84620e07f9d313622abbdc773275c9e032ecb3b984. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NO2781801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27558f5b14365203694def463bcef40cca2578c419a158596ab9a248a23a02ad. 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/DEXO32012957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979b2a7bde04713740cc9f3cc87d6315ab6366c08544b917fe00bf0f50e5b6bd. 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/DEXO52081757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07243553d7adf5beba96e28fd208168bd709723011c9c7b9df928bcb1078114. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2468669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8243844b400185881d58f421262206eff61e48520c8f9d09c3ff9ae4119646. 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/NLQ8D2200960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4090e1f019c698a865cb602f128a8caa9f6f3fab856a5d2e2d9795402bc33d24. 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/NLQ8D2200961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205f08af621f24c0b8e6d35653a220639b1eca291ec704870532e46e9780adca. 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/NLQ8D2200970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569834abe034c4b8460a57eaeeac75df9b1ea2232d64172f7e6ea90c8d7e559d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLQ8D2200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1082d9765e2278752fd38533ebb9025334e70f203d395e70938d333e76b63529. 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/SE3OH1733182.