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 0x2f103ba7df6d5098fcb1f5021e411c11a546143439eabfd58ff11d60e343a008. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/996aede6-3dc4-42bb-8df7-cc05852b5391.json and https://artists.proofprofile.net/proofs/artist/996aede6-3dc4-42bb-8df7-cc05852b5391.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bombay Dreams (Original London Cast Recording)
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 0x3c8cdc701ecf1db025b360860c71cf89ecafebbcb9a9abb83b6c7d62241a5bd3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCLS0202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b834cfb7c6ec9e2c2468959a89ede8cf46ee15f591239d10c47c484b3c5c215. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLS0202031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcfe15ed82754d6ab84f70e0f9247092978f986fa2488ed8c79650bfa6ab353. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLS0202032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd1d7d182a516e99c58ad7703516f5b255cb8930a5b78f15f6d86a4e75197e2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCLS0202033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b8e6baf709abbc87f552d2712a7181b36b4c51bfe9c73c76ed8ae854f5183. 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/GBCLS0202035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf74e151d9fa5890cfe9617df02851394893a13a9a3cb1ba13ff4f334f34546e. 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/GBCLS0202037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d1bee7109f8aece2dec239b97fcea2561249879234425f0c6823a7d8de9326. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBCLS0202039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb418da9ee51ddb129ae37e35a535637319f98d6b913d447453709adac866b5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBCLS0202042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73e0b8281f969dce6e8023c80f98950148b1e0f138541ce396c1530f14dc0b5. 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/GBCLS0202044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82af891d3d944ab2e51ab8d2d38e1e888c2959c93339b4a9ac75e52b4f196e. 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/GBCLS0202045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90396af3b8765e9f0c51475c22bd38413c145d49c13e2ed1db32ede6a163afda. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCLS0202046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeac24d66fd192e2b98f6f638f33319eebe6a0d8735b16bf8805c46a4d07931. 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/GBCLS0202047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197b3027f370dd190e3a5654499027b3b54fc74402633d8ffb1a4d86d51a675. 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/GBCLS0202048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60786e01a72bdef4a74cf3a8d48a1e699317035a4931e7c4169dae25b8abb8b3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:10:47Z), 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/GBCLS0202043.
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 0xaf4eab25578d89896dba32771e2905a14ac0f2ed1f6032b2c94e583464b2cc7b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBCLS0202034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5de753f87bfa65fc7320cb27b1248f83a282c517e0fca7762ff0be0ec818e32. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBCLS0202036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9788798bc180caf4d5b2a7898e6da05a53fe27a4b8f1c4a5b8547735feef06c4. 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/GBCLS0202038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea500b4c0fa7d9833b710f1ead4ceab674925905bb639255f0f0b2c58ea7a591. 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/GBCLS0202040.