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 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 0xf1053baafc211e9e03684a329d09377fc2056a5e94851c49b74fcdac64228a33. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68e1bd3a-b88b-4372-bc8f-79cef28885ce.json and https://artists.proofprofile.net/proofs/artist/68e1bd3a-b88b-4372-bc8f-79cef28885ce.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 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 0xbc6032cadc7cc535f17355ef5d38ba02f401dca27782e6e3d1ea7d7eca3c34b6. 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/TCAGL2278836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87f897e8b4b621c8afca9836aba234271a34e66038b0135bf968fe9b9a3d392. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCAGN2257698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6032cadc7cc535f17355ef5d38ba02f401dca27782e6e3d1ea7d7eca3c34b6. 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/TCAGL2278836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2015401ca20f34f832964d1d6c3f876f21c364bac7408e11d51d6f25662174a. 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/TCAGN2258127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87f897e8b4b621c8afca9836aba234271a34e66038b0135bf968fe9b9a3d392. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCAGN2257698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6032cadc7cc535f17355ef5d38ba02f401dca27782e6e3d1ea7d7eca3c34b6. 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/TCAGL2278836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170db3affb34cae52a495a8aeebfe109e16a6c898d423644bc47709e91a04e46. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/TCAHM2309010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed14b8fdf74c7cf94504080d08e5dcbf2f9587ea5197a3f5ffbbc3653b1d17ff. 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/TCAHQ2343587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548647387ad7671277c597b99314b77354e09ea2f644c9b2b60e66c8f2d74e50. 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/TCAHS2349974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee780dbc26d12d925dc506dbfc647aca23e0c745f08876f81e550033b3654fb. 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/TCAHU2494722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8970e8f34e7fb57cd357865d53d6466ac0b752023c02913a9e635839c97e69a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAHY2457628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba3f395c7e243beb5312cf8911b872eb578427918171372c9f74ce70db6ac6b. 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/TCAIA2479014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880df915ae7cc16b4668eb24abb77673b95fb20dec3936bbfbcfdd534be16e26. 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/TCAID2406153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e324ae18d210c8db5c5b85c4b13a7fcd55e40b76238f816f1fea24f2f83c6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIH2406539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de5d25ec48d6782202bf921017ea2aee38b1c492462b5c27939ff28eddab74. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAIN2456248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6be13ea0d102fe57d5a1bae72fe8197f62b47c251b3a992fb18bd6d998f144b. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCAIP2476261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737625274a559b669ad5fd0ac25331022f72383c28104c1b883b8dffbe86587. 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/TCAGO2259028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2015401ca20f34f832964d1d6c3f876f21c364bac7408e11d51d6f25662174a. 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/TCAGN2258127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87f897e8b4b621c8afca9836aba234271a34e66038b0135bf968fe9b9a3d392. 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/TCAGN2257698.
The Case for Heaven (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603c7157be2ef16207ee2b70257f74df390c8a868c0789ef9280cde428bce624. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TCAGD2264597.