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 0xe849316da18e67c6b805313968fee3589dd859662f850629565146544729aba1. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c5fa4f-f928-46ac-8c9a-746dec676db8.json and https://artists.proofprofile.net/proofs/artist/90c5fa4f-f928-46ac-8c9a-746dec676db8.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 0x6c3f763239f1b9c933697d165dcc23516fd1798f7f48afb7ec797ecd1026a2bc. 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/ES59G2430801.
Dear Heart (Arr. for Orchestra by José Carra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3859bfc00cd686f654816496bc8e291391b0792d494f7bca9050096ee3cff. 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/ES59G2430802.
Just for Tonight (From "Hatari!") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef104d6643dc38435abccbc9a8ef9e9c389f1eea9b3623eb6018ba6633eb22f7. 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/ES59G2430804.
How Soon (From "The Richard Boone Show") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d253110471329680721641951550bcc5c24c998037864832c738ff2a590bc. 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/ES59G2430805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0242f338599e302ac6771f635eb72e0f1387bf0000df48728120a666e009fcd3. 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/ES59G2430806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd280c061a161d36d49075883cd1ed290bed8e57cfe4def7758162eae9cfb97. 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/ES59G2430808.
Days of Wine and Roses (Arr. for Orchestra by José Carra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a0e426f2d737c4ad6f19ccea4ed6447a828f9913bbf372b87ff605abc8165. 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/ES59G2430811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccb21dabe65327d860c33be58a1a7dd0cb8134cbe15e18092e098078743ac0f. 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/ES59G2430813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a78d87fab673e387ab29f5944f294fdb0758ebdaea79a62d6a3da0af442eebe. 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/ES59G2430815.
Moon River (From "Breakfast at Tiffany's")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081c50621a663ca8d5a8420c4d0ce666d0aec10bec367cb203e5afa6a1d87391. 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/ES59G2430803.
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
Theme (From "A Shot in the Dark") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df2e6f05f2c2e07e0c162f753c27bc15ca16a9e4ebd1b8dc540c420b7370f09. 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/ES59G2430807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadb4be9d167b27e06e15f2797b1279205d5f0616d038d851e1ecbb9c842aeda. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES59G2430809.
Theme (From "Two for the Road") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63804294ab36bfebcbe538dd61b7e883727c45702c27d2a07caa5d9a920004. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES59G2430810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7423d8dd448ecb5ab70a5c48d530351c91debaa459ae81c9cee684eb3c4a65. 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/ES59G2430812.
Baby Elephant Walk (From "Hatari!") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48526acfd113f0bb65ae43806d49990b3ef0c2564dcef37551c9090e66110ec0. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ES59G2430814.
Nothing to Lose (From "The Party") [Arr. for Orchestra by José Carra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fbdc74f217b18765a692adbaaff1d1bc4a7b917a705a956c3715f6631d83d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES59G2430816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa478de1528503b79905f329bcd62ed1d5604e17bbfe28ee23d3f6ebcb13d832c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES59G2430817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1f879c47ee4f10f226d0102093499320805e7eb3b40b612469ab3db669a297. 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/ES59G2430818.