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 0xa482f9694487d5cd606acd24d074e8d264081a89973137ed25196d8c05febbcd. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d8cd792-12ff-4367-8082-f77566401f09.json and https://artists.proofprofile.net/proofs/artist/3d8cd792-12ff-4367-8082-f77566401f09.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 0xa685a3c0323a81caa4f54e4f1c4e006676f83d6514281cbe2f12af60c8a0a4c1. 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/USDY41955524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff28fab3193e049e1066573e07e357cd67133ef9bdd021091a27fba44dc8a93. 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/USDY41955527.
Something Small, Insignificant (feat. Bobby Bucher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21533ccf033be3ff6ece00146b9c98b5eb300f8189d6ecf27c7565eb2a65e4b. 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/USDY41955529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e5a65a8ab03f7b8edeeb75c482d9773e5ad558d23b9293537d3a9e1927653. 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/USDY41955532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480fe406d8299bcd7d262764717adc3c69e1f1020a6d4ce6f6ba39bf3b76f569. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USDY41955525.
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
Mercy (feat. Bobby Bucher & Chase Moore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc5285e5bd9de166d1b97ff811cbc91f7ec9a421eb32f41480f15d9487b938. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USDY41955528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84d37e84f93711045add8d3b8aa75c219a25d3a64ff32f72982d589939a5360. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USDY41955530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf828f99869b8a536b2621fae3287fe69f1d010800458ac3774843714d515a7cf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USDY41955531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b477f1fcaea5a323064fc4d5f7a03ed0c5dc2fa3423a6d9a4fc96d6d39eaa. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USDY41955533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b4a4ca65985f0dcea396186b2bb0cb410b99763bd3454ed47de1f6e706b43f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USDY41955534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3871b9bfab562672989d62441bdfc53c780e54680da42676bd1a02a13225c7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USDY41955535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd451498d1b1d4d95e4b6738cd5c826d38f7756a08963b6efc206af0e3ff334. 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/USDY42067430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fdeae596a4a5019b7f055509d84ee70cbd20840e9af5988e65e4d8fe7d04ee. 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/USDY42364744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04230ecff175bdff257fb4a2cf78c3557e6703cf010a68738bd6d6ed1dcc8e4. 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/USHM92437971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f95d5e5d16ccf412ca0a00954ad10a7d1864b0cf91e5d4165c3f03827717e32. 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/USCGJ2549602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b846ee2b792efa23114a5df2e9aae53d667f40ce27d14a2593a47b2447d7920. 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/QZFYX2140762.