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 0x15bccae2525531955518751b598dd318614d2ffbd0299b722f51b9ede08adaa3. 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/8da6d15b-8c97-45d2-a482-75085308aff3.json and https://artists.proofprofile.net/proofs/artist/8da6d15b-8c97-45d2-a482-75085308aff3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Somebody Will | Shucked (Original Broadway Cast Recording)
Maybe Love | Shucked (Original Broadway Cast Recording)
Shucked (Original Broadway 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 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 0x485a1a41c3517a4e67d2671bbc4931a1d095ee3bd88c0f0405d506ca12efe1d8. 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/USQX92301989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7e420521bc2357600c438b3e6cc6b6d52e5ea03fe336eb07c7b3d13cdff646. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX92301990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98c7c47c24a29dd0e10398b7119f7a3e1e5ec1ca5d8f6cae17c3dc0a06db43a. 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/USQX92301991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2147b07df3cda7f7a3e762d5610ef94c0e969ceb8edf9cc651d880703af6a59. 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/USQX92301992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff8980d63ab764fb9409ecdb1df66e6dfcd928f68a5175625663952904aaad7. 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/USQX92301993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd933a7b07e21177b91eb61aeaf08b7e5fb5d81ceafbaef89f2ddeddb05d18. 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/USQX92301994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5df9db57cd46e1a146f73a93173e4983a5b649af362d97bfd87b8fce1a9c5. 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/USQX92301995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52416ba8c8c7f6d1a11fc6ec541121d261241f01d834ef14d850c9ed45c99f7c. 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/USQX92301996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176b8c8ca844545f7913b070d701d2677cc5ddaf7197bb7d12342c58e784e279. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX92301997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3cc13b02b149c266c96914906c450421cf1bfb47a6997073f5729471e2d6df. 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/USQX92301998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488620abe9d075b4bfd4d1dae7e01f46fc94911ca9d2294448f11bb8662abcf7. 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/USQX92301999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5039850160962ed7e894ce7acf57cd06d0d3e7b4e1a6eb35461403b4e90e614d. 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/USQX92302000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ddf7246b6edc561be93556bdc56b0fa9a66dc5d6a864775f792cb5bdb0efa8. 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/USQX92302001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600c2cae90a47be250642149a2ebfa415384e32c090898adaaba5e87b2085bf. 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/USQX92302002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08a3eac6480fb7c8233cfdc4bff1ed78b7877da082c8c2e9a93a3a2c4cd129. 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/USQX92302003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e71e1fa970c54036ec22d9dc0e0b6fac39fafcb8778c21e327f1573d549a50a. 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/USQX92302004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d765bb0492f33ff63779e33aec03ef87aeed14f0c01db99a7784d3e35fb42f0. 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/USQX92302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43c80117f1d0190a23106a23cb8906d1ea4c38afac32ed3413ccfe718cbf9cd. 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/USQX92302006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c9298ed7900f47499bed87e4d3675fab7b1505a58f01f9a0186dd00b09b526. 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/USQX92302007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247037f86e2508bf726999d6743aba61ab940b753873a91e884517d5a6dbc6f7. 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/USQX92302008.
Friends (Acoustic Worktape) - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f7b1615982f7335995d173b2505e64fac4a79c186d909ae6ed3ffe9a436dd. 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/USQX92302463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e95637155e60f805a3d015a1ce43eaa49db7b80695113d22e2d74e1df22132b. 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/USQX92302009.