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 0x2cc59cef6fda452201eb4652314830787f41fed323b32e6e956430fefda61be5. 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/90c9d566-aa7c-4359-b4d9-490af05aeae8.json and https://artists.proofprofile.net/proofs/artist/90c9d566-aa7c-4359-b4d9-490af05aeae8.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 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Owner Of A Lonely Heart (farfetch'd Edit) [Extended Mix]
Owner Of A Lonely Heart (farfetch'd Edit) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4880d435d46192748dd467864635d01ce9b01bac50e36c4b042fd9020fe71d9c. 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/NLZ542301716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66faec4b8a3a307b4fa1190b8e29b7f726c1cb456ea16a85c2a9cc694971762. 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/USEE11200790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f145c671ce1464206cf54f70d21d6aadf9ad2c572d6708fb561cd95735edb4a. 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/USEW19900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a123dcfae09adf1de123db8a79478fc3cf8c719690fc7f79b94ce48929e14. 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/USRH12302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f23d1ae52b2c2accc2de5e0bb3d4d4894e0bbf3c7bda3d15ebe4da7c0df7b6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:55:57Z), 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/USEW29400043.
80s HITS – 100 Greatest Songs of the 1980s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba33ae2a399535d5dbe6c3bc076bca97acf00935ce1d05ce6043707032d93a08. 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/USEE10301081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f145c671ce1464206cf54f70d21d6aadf9ad2c572d6708fb561cd95735edb4a. 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/USEW19900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Owner Of A Lonely Heart - 2008 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05465c116352c153ac7eeca71a8a72018857012fbf865dc9cc9a4e2b9a87df53. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEE11200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba33ae2a399535d5dbe6c3bc076bca97acf00935ce1d05ce6043707032d93a08. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USEE10301081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04a020724ede584a700d181b8b3c80fa23d4f04bf1b42aa01bf8781ebac889. 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/USEE10301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05465c116352c153ac7eeca71a8a72018857012fbf865dc9cc9a4e2b9a87df53. 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/USEE11200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bebcc8bf713e70cb1d4df2f0406f9d9b8db31a8e9d74ad0d2fb04d3a3f29ac. 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/USAT20702539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67bb2146432f965f76c2e2ea32454f06b1bb83f8bcbb6687ea3c1179bb9f06. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USEW10000208.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch