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 0x47ae52856622b3d376559d0ec1206791cc015414b0e512c75e1f558191bea707. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2784b4ce-a3ef-4837-a358-6c611220e094.json and https://artists.proofprofile.net/proofs/artist/2784b4ce-a3ef-4837-a358-6c611220e094.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Portal Stories: Mel (Original Soundtrack)
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 0x607772bdd69c7a4b6e5b0827a219d8960e0076dc39da988caae326c72f723e72. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCACG1545650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1638ea5710f32041d3a15dd6a5e4dddccd4570659fa9de6abd0f149b688db73a. 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/TCACG1545651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e76ae983cf22003fdd291575311f64416aecee9c724e865fafa22b053d9a043. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCACG1545653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701dfd49aaf1b203acd4560294954849cb17296bbddab8be7553c3029a276ef0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCACG1545654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa0a531a836f4252d4de09686a17f71f08a5c53bfedb19c1d7d77a3fe0ddec0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACG1545658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe307e589ca18791a08b06d9c2aaa3f5388d2d50ccb0a0b8c4b3b68cf89d4b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCACG1545659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef9c87f82a4d972346f572739ac31c5e9e1837cc1f950fcf3cb150a52167135. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCACG1545660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe4ab88ae133b9be9240464f9141b75e80dcb962724953a466ab9bf517a6fd4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCACG1545662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7cb6f556d9cd220a9ac0224c9a030e67f5763d6410396b5a48262d7e933cd1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACG1545667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8422e874c6d645f41cf19b91610edcb48a9d4eb150640739298418dba049a4e7. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/TCACG1545668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11344a6c71360665266c0cd20ecb193b217d3bc7ec36ab7fa63e43f8a497dc16. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCACG1545670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7973f1858295e4d8785e87c91f0ffbcc1a4e7747be3b423747462fb4a260d0. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/TCACG1545673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2273a2ec87a7446df79a1b2f82fd161f5e0f297037e7e45ac8ca24e02b2f5cd9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCACG1545675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b1f27c53e15896940e858551faaa436c0a162493ae3185857f59a109a5cc6. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCACG1545677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32df2dd4dc5edc73d5ff8603e3a1281e0ca6f475e81816d531a3ef01f820763. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCACG1545681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6817f20914fe21e237b40c54d687eaf304675d55e5424dd92e458af4ecf55d4e. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCACG1545683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5a0da853cbcdd12dd8ce832f9437f23534801ebd578516f1a327fcd5ad150. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCACG1545685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45418f1710b0810a1ecbd6c920ef8187c47267cd8ed72a87319070e12dd8d7b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCACG1545686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702206266668c59f31110a031d04a8bb61c9b0356c2cca846eb0af2d7a528451. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCACG1545689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a75ed9be66859e360cfb548966a0ce9e1eb3dac5b11696f5651fe87724cfd6. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCACG1545692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76af168ac7eca194bec9c24ad0a2a81ff176b2a608f59653b83a65a85caa097. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACG1545693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7589780f5a57d45787579ec799423d9487aa31401cc2066b830638f8dbdebc18. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCACG1545696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b62d78e76b9bb43dab86a76bc368cba2aaa4f9f3911f1305112ef648cdc1167. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCACG1545698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bb899a007ffa3b26e77625a4346e2bf0056b989e3eeb962fd4ad5279674f97. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/TCACG1545700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea143dce2fcf55f213523d9b994cf388a5713875c81548b65de16a7dc3678c88. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCACG1545701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320722edf1b0104ce900a3d43800007b1d4e85d977202b4ce6f42083c8716d9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCACG1545703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac95b1b870e857db296d8da801983b8bf35f0850e64c100c9b6090da2ed10dc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCACG1552908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb587a80d14f92f92911c69415763593b653f10e57d7208e326843c47552a68. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/TCACG1552909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aca4e89151784877093bd6bd84ad3029e5a27ecf1db684b796f200e704417b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACG1554962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac848ea56481a072558f0a58042f3d3d0cd8d413417ae3dae02958445b853579. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCACU1602353.
It's Beginning to Look a Lot Like Science
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd54b43321f19724fa276255437d092927696150dcda90950c14f66c0a1f9345. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCACW1606065.