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 0x92ffc9bc9c4adb38d52d6e236b5e67f071c8e3c49c22f595a5cce0b841e02a12. 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/2ba67545-0511-4b95-9bd9-b2c9c98bbe2a.json and https://artists.proofprofile.net/proofs/artist/2ba67545-0511-4b95-9bd9-b2c9c98bbe2a.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 0x9cccd691dcf32913260e75d3ab970e188d3afa561245009bdc2d915c5f5b0da6. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLUM72200936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4eb2af8d199b1bdb9779a90099b9010919de334a621267763d1149c0ca1a67. 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/PLUM71600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f10a3c2ca132d4bebbdc4564a703c53c14ef3c649646cd5f8204f94086d509. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLB080400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e855df333c0153d6037395dbf2cf96814d64b6076b6a6f28920a6c44d9947e. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/PLUM71000255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576a81229acd560f8a7a553371a7e04ac26065f279412f2cd531eb02cb896490. 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/PLUM71200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31501a0cf0415f8317570b8d9ab1be7e4a1a9f0e6c52dc1726e3e23fa21a5023. 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/PLA210400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ee53a284f484ea7f43120d02914923105c13eec7060481f163767686028356. 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/PLUM70500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c64806fbc2a01290b04f6f11b9809e26c65f7bad670536697bd659aedb68c4. 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/PLUM71200391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7729f2e79c0ef819748d05690b33ccd005dd46931eaba6f90206c6da875f1313. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLB080400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d64e4e9542308d6b0c58e0b785dcc9e74ff64815d5e78b6f7d00f002b106aa8. 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/PLF301400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b450000dd5fe68226bb45f1926bc67812777bd363ef50d6cbb4efe86529756. 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/PLUM70900988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9bb8934726eb67e30b592efddc71d387ea61ed8b18b1019e846f21cf836647. 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/PLUM71201416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cccd691dcf32913260e75d3ab970e188d3afa561245009bdc2d915c5f5b0da6. 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/PLUM72200936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d7fab9cee66421a050fc76aa1309254eae6a8f7a8f02cd3ed7befd95cc2892. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7875b50054e518f415e09f969ccc6ed4e55a3178f319fb5c0af5bd5d96294b91. 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/PLUM72200868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5202ecca8109916928ccb3d136c47d8fa3e6ce0a78facdd15e1e96b80087b979. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLUM72200872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b4d1c8e1de7c4763566a2682c9a5fb3aa09fb6f18306671d2d7d96b8f8bbc8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/PLUM72200865.
Bilet Do Nieba - Street Version - Remastered 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8fec0279e663b6b362713455d3fb7ad9ecf6c1d02839f3cfeb8fb54a7f39a9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:12Z), 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/PLUM72200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e2780074887977f2b132212d867bcd79d5901ef4f4fa9a7257ac422918f8f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFZ62355010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d57da083e6d6ae0725f5015d7c8e364e2b98b593baf0363d2c7fb0f9e9afc. 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/PL76W2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0e19b64b4c1942329668b04804029d801843d8d32fac6da30bee897a853fe3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PL76W2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54a451c086ce6230055f1eac69da02fa9499a49c6010221bedd48844dd7a3c2. 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/PL76W2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab71ada11db56022ea43f15d8618103b3c224c32b4ccbdb06d9049656fbcfe2. 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/FR96X2126640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24e1e92742df141ff81645c1432361af291d2bfd36006c437b8a281b0d88512. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLC061403389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c42356f758943c0b5c9d8634a53b36cf23b243f2656d39a40ba3043f4740b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLC061403393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5604b18e69720839505b8500efd7c30cc074b3e9f66ea994372e9c1d196ed731. 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/PLUM71100553.