thumb|Harvesting the poppy pod. thumb|upright=2|A chart outlining the structural features that define opiates and opioids, including distinctions between semi-synthetic and fully synthetic opioid stru
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 0xe6959e33e5ccfd742c81aabe7ae23baa2ffe2bb98a579824f4f7977c2d5aaba2. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21d4a148-207b-4fb4-a400-c736dcc64600.json and https://artists.proofprofile.net/proofs/artist/21d4a148-207b-4fb4-a400-c736dcc64600.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 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 0x89c3dc2e4f4ad5143a2bc5c405d01daf82fe75bee8b59d02340fefa78578453c. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DKFDC0200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8c41a7cd2ea2b221a883b8bcc0f33cf070012df38364a7ce750444992ff98e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/DKFDC0200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d2eac4b72b2a461a9398953bb62f452ba42717eb21735b54af5b6626f5c690. 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/DEX260481601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6936f3034db7ff2e596e951c70ff2366653c22bce5666df4958c8bfab847eb. 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/DEX260481602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa959467778bfc0b22359874b48f329fcd449d139564190bd7be5cc2fd7d39b16. 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/DEX260481603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8d7b5be06faf783bc45c25d8debfcce3a674192f196ad03fe47cd10dffe63. 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/DEX260481604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7248c82811a7dc3c6d2a93edbf34222808983a14ae004ece152cd4c15c9867. 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/DEX260481605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c70e8a5ffda42175e6c128528a7c4a7917661bdf147b9830baa33ce2037a2e. 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/DEX260481606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d24efe918ac021e736d2df7d683086042f50529f5e3302a5a44cfe034ce886. 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/DEX260481607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530d56d146cdcd335171aff30e9834413907631f7b8a867943cd01378afa8d9. 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/DEX260481608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77148c24f8603d0a1d9914457a4a13a47ba632bcea5c518b4ab1e7c4f9fea082. 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/DEX260481609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d81b48fcb153e0294ffac0e10432e92c95c7920011e9e0248f4de0befec833b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEX260481610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb111b464dbe3cefaa1eb3e5aa16f2ef07c44706cfee595937a7be26b2c5b84de. 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/DEAS90100000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37b5f015c6f5e928b3678a5a92ab3ca98db9e2a4196865f95f2eefca740d61a. 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/DEAS90100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4490b29c90d442feff08e0f17eec6d4e3bd2976a1805fb74c8768d01cccb79. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEAS90100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf398f2532c878b19cd101e12a91088aeb09bae0f8bc6b2c8a9b645091f926fee. 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/DEAS90100003.