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 0x849e30dadcbdd5aefd59add405bea4d81bf7e4291c57be070680388e4c2a62a9. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/531593c3-0558-4c31-b51d-1bc7d35a4b23.json and https://artists.proofprofile.net/proofs/artist/531593c3-0558-4c31-b51d-1bc7d35a4b23.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 0xa57d83af9cdc838ff93c4af5c6a345afbdacfd2bfb1cc16a700b60784e855f4c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEWGI2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b75282ac94f6d989d5247c8e20a17283dd1945f9adde648bc60386e56da391. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEWGI2001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506a74e7d7fca3547b84b89a023ca16d95624ee65a3635e016259c3ab93130bc. 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/SEWGI2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc672d6e91156d635ea492a0e4a51319985b924cc39a925ddf67f79536f230261. 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/SEWGI2200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868226611ce16e0eda67d1eb2e1ef9e7b36865833fd1bdbec8699cc26b12962f. 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/SEWGI2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1a071ef00631d9902b725195bcedfbbdd7fb8c6eb7aab981ad961d89230dc3. 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/SEWGI2000501.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28906edff49c179ae29c80f99ed3ae7f0547393892b8807229ef002f3f65d063. 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/SEWGI1601001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bfd88140bb1da6420f9b4df09810f3fcb668f0cb302078aefb1af6bc1c4952. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEWGI1605901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9a61904b2f4340725b1e01ffc645208c9551c357baa99116c0845af53df10f. 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/SEWGI1701101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5499ecd6cdae38efe6d2d913e953aa064dd114e57b2bab0616959db2514df. 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/SEWGI1702206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a0c3fa2251d5d56df4a5c6aff7d86316231dd3010a1b965aef264d57cef31e. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/SEWGI1604901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f04d75ddb7182fbdeb9a303321ca9cee21bbd650202e1328b430894a67b485e. 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/SEWGI1601201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab5d2f87723b8ac32ca52afe22361b8c47e178e3e5259ce52d43ef0a7be8f6b. 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/SEYOL1500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe642c14b96bc1aff371a4fc9fe8023e456393322b2a62a30019c31783c091305. 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/SEYOL1500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e3dc406ebe184bd9050793cbd1d61ff84bd5215da620a4ddd3efcbf5b2050. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/SEYOL1500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2c3c6d64fbd968647834047af289a9cc697535f392bef62d701741b5622183. 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/SEYOL1500406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdda02376d00ed03f733178732f7694d9e8e6a5042c52be67185e0db791ff6. 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/SEYOL1500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d7fd6ae50117b0b556e8809dd4153b69ee621f394762859531e25616f4a9ec. 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/SEYOL1500408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b75282ac94f6d989d5247c8e20a17283dd1945f9adde648bc60386e56da391. 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/SEWGI2001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1a071ef00631d9902b725195bcedfbbdd7fb8c6eb7aab981ad961d89230dc3. 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/SEWGI2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd4a80e0960b55b2956359af26d8a7bf53f390bb67b20909319975129ba4c5a. 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/SEWGI1901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84153f2a75a8fb204d682a371df7a930129bcfc7200a295664176890cea4208. 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/SEWGI1901405.