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 0x789ba7042e15ee06100fd4450ba62436fe9a899396f68846268c9207030ab597. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d183e11-b933-4211-a9b0-bbace68511f3.json and https://artists.proofprofile.net/proofs/artist/5d183e11-b933-4211-a9b0-bbace68511f3.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 0x7869eabd51dfbc3835755b1d71e185672cec18ab7335c2c5ad4d66f6dbdba5a1. 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/NLR1T1900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e698f8910783970ef88e8c8bca6dec4e331d417aaa6e394005a03ba0f8084c9. 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/NLR1T1900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9699597f529129cc3752ef3453e67ce3e3aacbcaccdc207073ea6b1dc52ade. 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/NLS241900534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc1d7cfb3790aaf307d2f599e006538c7382107a2b50cca94fcdad93787db95. 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/QM6N22438168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46190a6019215bc4e3cdc31c43f0f48ec9eb35be8071988be44e0410dd816f3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMFMF2308457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eac8c58ed3f42233d53fcfbb658ab97e7f10b729d15809dabab403dc15a7cb4. 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/QZDA61915400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521816cd66ee12a6602a85b12ad7dbc2f6bec0d2b9d42bace5f1700e0a5cef4a. 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/NLR1T1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c9cf0f3bc0b1b9fbbed2e8e11f3616de9eece53edab1f5f9737efb09c6560a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEL1912503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c6f6e6867d175a1ba3860aea201d873ba95904756f1f0e5162163f44d59bb9. 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/QZES91905145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52f28dc7f8bfc78f208f9f78a2a79cf9374ef029caf158e3c920df4524f48a. 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/TCAEL1912550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e8dd5a3ac880c972be061b89d8cc04646260dfc5b1452bf4bf7bc1a789ced. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAEL1912559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae68eba0fe81f30a440e33969e6dc930169507ea26128a9dc5706215c0dc6a6. 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/QZDA81983796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5672edec4e3cd78480a8f353cf3541796c24489f5187a91c53051e3b4d29fb4. 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/TCAEL1912572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5de582e5c85f3f41d2dbf769c5a219aca3457b491dcd7fdc29996fefa895bc8. 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/TCAEL1912580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c0c12652df32c9f6f4123574bcd78eec2f9a1d6eca20703a5a5e4e6cbc7b26. 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/TCAEL1912582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038331d5f19e50437503a5712873b8b4aa41784712d660c36c1751720f286468. 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/QZFZ21956478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae68eba0fe81f30a440e33969e6dc930169507ea26128a9dc5706215c0dc6a6. 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/QZDA81983796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadca8d248c729bce2c88ba3f56ef62b07d8130d181cd091b07ac02412483d2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLS241900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b90bcebfb890078da86c0ac36fe711ad9ba557043a2540d239900470bbf99d0. 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/NLS241900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f297dd8caeaafe97a2944dc37599cac9e7ac98c7bab315f17fcb074744ea01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLJ3L1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa217b61f0888f09093fc1a41cf3e07eb07cd204744640169b6da34164b120836. 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/QMFME2096756.