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 0xa61e85a7cec92b4d4a4c339afd82bebcfc528a0cca04c348990ff87704475d12. 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/7520479f-8e7e-4ba0-8c7d-eac13bd94e09.json and https://artists.proofprofile.net/proofs/artist/7520479f-8e7e-4ba0-8c7d-eac13bd94e09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Relaxing Rain and Dreamlike Nature, Vol. 2
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 0xc843dfc8552e552d83dabafebd69d716a52d7d5656fc593dbb9e6abc1436c2f8. 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/TCAHN2392549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254718526f794633af322a3f851caddf5d48ba3bd90b0044456b0db83fda3960. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAHW2428223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ccb435c3c37a8141b8f2874d644ef71974b581fb14c96e8026129c359ae25. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIL2458265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433ebedeb895a7860635b1986a24b0543b60eca74cb6682646f8ca290cb7625d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAIL2458272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1904b8100a35c2b250c0d1159ef4894cef1da6260f71e667dc418176a4f6d76a. 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/TCAIM2458280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7981b189c417b25d52e7835da41aefb706e8bf2aa60f4d87ea7638436f129b79. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAIZ2449897.
Relaxing Rain 'n Dreamlike Nature, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bb80f23807b7afbdb831efc17387c749779a15b653fc9ad8dd7eca4d305cf. 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/TCAIM2458342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f137e4f8e9ac59fe69b5a8c7bb4456669607ac803343f0914c076f2bdec137. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/TCAJC2472168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18c731e33b64fc7614d6bd69785bf70d0bf5c92dc8b8f2d806332ceb1805a1f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCAJC2472172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415de591da6dc967017d394a6ccf08bb5afff167b630767a3f5b1b1f6ad11f73. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAJC2472175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afb1babb2a1d2d2b976ed774e975e7c0f78c9e98af841e52ed5bfa46f1cc9a9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJC2472178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9d61c0857537e10b534cda9b2429d3329bf6a8e6d5a6538cdddfc1810c9b16. 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/TCAJC2472181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ab5bead81a62a6488c4e2d60ea2d7d357b60045a955692b4cbe6aecf8e9c5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCAJC2472201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e321ab38341800dac9eb9274b1fc8d15e4e90313502d1f97b99c2b95019405f. 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/TCAJC2472206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367a1a643bd44591ed1a4be466ddfee3c962fee1512bf433c6969c1cf97021ad. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCAJE2403608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169602943beb5bb05eced98628fe6439cee0ac0dc4c771aee97c29dc76cdeab4. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/TCAJD2403612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b2d0340823b14714e0008a75b8eb95199d94f970f27487cff77d6f9621d1. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAJD2403624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5aab1998e166fca94f2b531c328372343baeb7f1f241f31a504f30a3efac5. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCAJE2403629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc88f0bcc2cdab57b0c874c25e868be0bf6b8226be7b2b14d90bedafdbf1473. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAJD2403631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c48eb16981e3c26d7138828f717a8402663af5a04c242be11ccde70fd274e. 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/TCAJD2403633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60977ee9645ab0ee5b62fd542074d8672b7fecdf82fcd010a28b95e9d57e3806. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAJD2403639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8115ac6bd9346734b3765c2f69879e46569092aaea84634f34f4a20b1f0176. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJD2403643.
Relaxing Rain and Dreamlike Nature, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101c0780c6f472ad81c0bad9e6e68473d5a4ee2daeb4ce89695a9b050d4a2484. 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/TCAJE2571482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925b7036a64d7300b4ceedf87c2bf3e94b716e9dfd25e6973cc60483c59ec1a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJE2571540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c0bae8dec76109882dec6e538b9a9f20b953345fe58efe9173a76802579066. 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/TCAJE2571495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3dc48892a073556f4b65ac9d0b5d7a4c261ac2543d04e87a7848f54785c15e. 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/TCAJE2571497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eab663989c6e74a886d1ebe84a731f204c84190af172aa9b2f438405a95d35. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJE2571501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ae38613995f86ebc72adfe07dc910c3da56205a7eca3a39cb44a9df5cc39ca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJE2571510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d591b15edec931f6732a4f5a3cc4bae996139877b5bb8f5ab6f4165ba19aa5. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAJE2571517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9100585ca5536583ee3e3812eb8e5212a48418987742de5be7e2ea1e6567e3aa. 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/TCAJE2571524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25af0da31b44803bfe0e830270de8fb62fdac7785eb64313657d4cfce0f375e. 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/TCAJE2571527.
Relaxing Rain and Dreamlike Nature, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfab5f274c3067cb1fe4ef631cf7d384e007e66b66b4eab9b95f619bed573f4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJG2517019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5227545685be03e9a5b1f5d31d6603f85d606c6e20f905a4047442e6083e05. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJG2517026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983cba73e6d93cbdc3d50dda874d1e2bc23a43442f2cd1d87719debba9ddd4e5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJF2517036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e77ef04216f73021a3b1573540d265ea32b42598a65b1657f548d3b5eea904. 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/TCAJF2517053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc58af7b832fcb44bbebcba64cf99982dd20df9ab8c01dfd92e3d81c39cffa4. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAJF2517057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f432b23349cb8b857ea92adf87c9623aa4836873aa4299854a35edd94565e27. 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/QZTAY2463352.