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 0x47d11bf9a1176934c0e495bf7d5c59ba0d1cdcdae907ada1af26fbf094b345bb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e99c835-557d-4d07-9dc6-e483e952d646.json and https://artists.proofprofile.net/proofs/artist/3e99c835-557d-4d07-9dc6-e483e952d646.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heaven's Reception (Grandma Maida's Tribute)
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 0x63e79efba6a421c13aafef89c93a2f84f78ddbb4f1bf60cbbd7d201acc484b0d. 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/CYA1T2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a887999bbbd7194854ba12ed80c42a653e16b320773a4cc1d55195a307cf932. 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/CYA1T2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a62e6177f4100d21fc9c01e4f06c28ed13062a6f2d824dd5455ef8251f7e375. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CYA1T2300004.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a46ba36e77851e88fb59134eae39e2279929ddbb3c2967d080cc31ffa7f8adb. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CYA1T2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b836a84e01d96bd811764641a73e506ecb200499f573bc44f691a54a8c95e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CYA1T2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bf29778698453ef01d2370d69aadda4f666a5f2b08a6383c08a030ec2c9f56. 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/CYA1T2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777aa0208d02e4edc5f1aa2207a25459e388c063e91cc0e5ef5ea6ef87355a9a. 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/GBLFP2189983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0dee5d06fb572cf4302a49057a00707f9db641bcc32551881ad8a23968e2dd. 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/CYA1T2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b857f3c83255b7c776c4ec069aab3588059e6e2b1a773165e12d4168408efb. 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/CYA1T2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc412b369779728ad43c724a4ee26fd1ea7a62eafb56e0dbe072be88c39a48810. 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/CYA1T2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5946e764fb713858322d7ce2fce931616dd4081bd1b8c9ece63941ce36d68eb. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CYA1T2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f218f5349116be759d5be07749b260984ae9e0769cd06ef2943737cf49580ff. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CYA1T2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba83638a090d36ef4f5230b44d5f2e31e8e57e262d742d1294f81e2ea1bc820e. 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/CYA1T2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea39b6dbc257b4aa5e4e817044e86029a1d2d01d1343f605a2c41d0792b0cf85. 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/CYA1T2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cbea77f00a3f1bf4fc679aa5069a9d5f499907bc7ae361ceb6b4334e63e051. 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/CYA1T2300012.
Worth Waiting For (Anna's Theme) [Vocal Version]