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 0xccbea194fe9197d2e6b3fae1895de84407b8bc75499d28d0085da1058e2fb3eb. 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/61afa78f-25e0-447f-8d8e-1f62614c8a86.json and https://artists.proofprofile.net/proofs/artist/61afa78f-25e0-447f-8d8e-1f62614c8a86.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 0x3889f66ef15e675c21398a2c7e6fe9c8345cbc1bf876eb075da87e64d1f624bf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEPI82501375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a776c18ac7dfd8246fc3e20056efd012d8c5ae20f638be66585db3d33a3fd45. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEPI82501739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e55b874eaa05b056b8bd239b0a5caa6753af34f50cb5027921aa841f837094e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:51:38Z), 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/DEPI82501744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afe7a7c9b447fb4075c0f996991cd097294e03c464337459208fbfd4b441948. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEPI82501771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b3b991073787881a15e84adf3edf073476fdb3f4be508484b69e6e622b738. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEPI82501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13348fa2f913c87c7643a2a36743fc875e28acb533627f2b568153df871310c8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEPI82501894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11990eaba582594eb5176cfadeffc8e63424ce2af19a89a5c64ca5618087cfb1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:44Z), 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/DEPI82501891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c155e0927ecce7e769f671fa15119d661481492ce32e239a755d98321cd201a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPI82501911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ff1460a4b239325d7267a7a306b218c2ec9caff009d0b7625c8f83bc9f115b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:14Z), 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/DEPI82502296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339aaf2957ea10b361e2bd3159d6f40b8b368de9e0b19519914cf3372c93b93a. 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/DEPI82501898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f25a4682e60d17e28989cf42f3a33170a51593bb9d07ec6a08fa9fd45e9d25. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEPI82502358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc04dad059424d91bdf355d6e1ffe0fac6b9cb07d839e93b1afdb984548312a4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82502354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558247bed494edcd3054a3f8e608e382ca96727741dba895ab3915dc8cc388de. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEPI82502356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875bd7c515dcd8e76661bd4f52c3de77095a81bb88197033ad99872fb478c2c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEPI82502298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf58b81353bbca8fd1f7efc52678d7e937d65a8dd1097a87d8fde8b41fd17165. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEPI82502381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77380e347dbb6457f76aef4e3a3b3f9e492781f537b0a0622e89d53e71401241. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEPI82502388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af662b3f485db969e1aa79c8667ce07d5ceaff5ca6e9e2d1c9d4eb0cb384b4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEPI82502389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9276e4a4aeb14c936559ecd8d77cf5e48a80d6574e10ce93f62c6181ccaafa83. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:20Z), 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/DEPI82502390.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e218d96c267c3b2afa6b4eb280f8ce6cf742d2491facdf12e95d810686ab958. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEPI82502392.