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 0xcbc6dd7b5fc80c2950ec0b7d6761cd5b24c734c41bb929aa546e2237c7a47a06. 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/1f8b4db1-1e98-4565-9950-a3c440116184.json and https://artists.proofprofile.net/proofs/artist/1f8b4db1-1e98-4565-9950-a3c440116184.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Restful Echoes: Music for Quiet Evenings
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 0x6b9b81350c192631bc3d28e693bbcd242477f72effedb8416fd9f0ca80ac5b93. 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/AUMEV2440966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0340c28a1ebbbd12b64c17207881cd66deb9341d57c49a6eb6621b86bb45400d. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/AUMEV2440967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf2197264ec106f3470b1d1f5ec9dc222efc2b722b64df1bdcde53154046f5. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/AUMEV2440968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bfe2e0ec7060c9a5f5edb204a8c140f6273c4b8246de100e7bcd4312e7ac93. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/AUMEV2440969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b7c6781dc951d7716fbcb25d62fd8b381dff1f2b0cd93d4b9b14b36196363d. 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/AUMEV2440970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e82c20e9cd71e423b3b947334a74acdf10c3570495078d8082f2a52da6d0b8. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/AUMEV2440972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a878f3f6b8bec653fec2fc2f958e039b89734f705b3e3f7eb0a2a4797b573. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUMEV2440973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f41974476014e05f3d5c822b7e738645389db56d6f13e93d99e9fb802bc341. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/AUMEV2440974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708b40eda10bd93dc3abb4e782d9c2a1995fbc3695386606dc3c0b1befdc8a0a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/AUMEV2440975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045192f1a6437ddab3d5afc4098759f60e3c21d65579020aa4f0fe750fe1e37d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/AUMEV2440976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217a34b1e86353f8682bf86dff7131e980adbfe7818194d41a83a56c40da4f62. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2440978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625bf12e4b4018e2259c6a9442313c429611b7974437d8a7fa8dafd9558123da. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/AUMEV2440979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501dc218aa0c791842bcf26d73276b147de34c6807a26c0148c14ce50d22d84f. 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/AUMEV2401232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d0aae8701c5a03e537f11afc85d125315a2422f3482bfbb0b4ee9e3af80b4. 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/AUMEV2401233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264900e8cc88a55ef2126b8cbc72fa293735e220274e1fa9764b1e034874c62b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUMEV2401234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a7f8b04234d8eac180917c6e7639fe54db7baf40c8855ff0e4fa25af2b0b20. 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/AUMEV2401235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf621e2715081997fa21fa228895f832bf71d364e3c372e036d304aec059129ba. 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/AUMEV2401236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1132ea6538a6fb2e95d2c1b7a5a677c83055859ee682345534a3bc40cf9cfe2a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2401237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89917662f12524cfef413a072c6fa07d52663cf3182dbd3645f0f020504a246e. 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/AUMEV2401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3379c8c03c4414b7f0b6b843fc63b237634c37b2165082aee7e73f26a66099. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2401239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde24f76a08209b373c9782fe186bb89414794de94b80ec80ad0d9f6024bb267a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236479b5ba10cf87a83f38e6c03d3336b35bd7dbe1e99465e61e4a357d4658da. 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/AUMEV2401241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d20455222606da38c2c02cd4030f472d62b5aea8e919836225a9865c7d0765. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/AUGBT2351339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc835d7748317dd9883aaa6562e68a04811ab2aa2a75b8d36ec75d8cf0a425c4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/AUGBT2351340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c4ed0cefaca7193a47c21c2a2a6402d82fa2ea98447f2a5ae24e64d58b088. 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/AUGBT2351341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7675a1e99595f26f9f1c8ba231d863b2e7707ea023ef322067c069aac143e0ba. 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/AUGBT2351342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fed86922fb0276d75ee5c541f0b8ff2c056bec7e941b935f39e750d9650b02. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUGBT2351343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef4e28f577ca531819c4bb88f4f022b9d415579f51316f3dc6de6f9faef5c06. 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/AUGBT2351344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd414c56c0f5980c22b0a8a36f9618913fdf8da0c806838b0bf2443214e1d11e9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUGBT2351345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bcc24e86a15296123189ca189f4c64357436a6012222e22189f6fb977dd146. 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/AUGBT2351346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f42e1c8ac46a6195c6860dfff1b69e43b268afc2eb54cf5ef0b8183607c820b. 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/AUGBT2351347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65742b0a18feb2131bc6a3fc2c4c181df474e17dfeefbb1c2a3e4d436f09e0. 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/AUGBT2351348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486adcb2963b3c3ee9748b38b9b30885dcf010732408f137e705003ba570ee90. 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/AUGBT2351349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c11cf2e5944bfcc05d672a1a659454bc2348d57396442595c7a76524c49f4aa. 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/AUGBT2351352.