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 0x130365838aa7c380735a55f6f9a3374848a78d83d1214d8650f47a837726c83f. 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/be7b143b-a8fc-4f59-96dc-1b09ee4c14bf.json and https://artists.proofprofile.net/proofs/artist/be7b143b-a8fc-4f59-96dc-1b09ee4c14bf.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 0x2daf74a1d414a4f8d5c002f3f11b96673d605a0af7de60e59a289d64edf04976. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:06:01Z), 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/QMZW61900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f6dd7f5fd5c38d4575f05e59100047a0bad9bf49fec4b09399fa291b2aee9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMZW61900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef3908a3a8d727b5ce995e4d14a07ade1d078207c168670d8ffa05e8c858a57. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QMZW61900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45e3fc28dacaab278c8dd695e84d7904c5f7114b8e0f7bc1dc161bd9aac406. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:47Z), 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/QMZW61900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292ff9db8e5fb2149c268a46c7ec9fb96c9a1eaa10f8e99c3b3ce691a30bd35e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMZW61900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbaa11fa4d4ab2c8f6fccc26c88c58c61efebcc997c522021cbd0116b4c0b0c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:59:31Z), 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/QMZW61900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374ce7fd0bed03a6a835e31e06e99ea53a1c6e75cb5ab654ae49c87d433966cc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMZW61900184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7763555245c698021ab2f12b373c0d29cf493f7f26e1b816748b4ab8e8f2203c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMZW61900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62ef7f068b6987b4e9905d2b7e3215b67e682cd011a0dc183bb3c9d97c3265c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMZW61900186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb644a551d530c51c06b5f8a1496a32f6e1c77f5af887b4ee43b40407c39d50. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM9A92091322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3607b082d5135bc34f407926df86388f0678133dac7e4247e2e51609ac4e0c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM9A92091323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd4223f913506517e300ad01cba20f452f004fdb8758276ebe6163643eb16ad. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDY42201459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9be9ff0cc0c242cc088f3513215fc4e3a771314a526cb68c5b6752eaf38094. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:44:28Z), 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/QM9A92091324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86890cdd147933cd6ec016a3b85cddf196b5ab0026ebba028a050c7da0688e8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:27Z), 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/USDY42201455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4c7cde1a02782ca7a186bb70703bfda719a0d96025fc69cb36748e19685b1. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:24:25Z), 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/QM9A92091325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da73f45d91ed26998aaf51efc9b970bdc721df352efd0575e209849fb7244bd. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:47Z), 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/QM9A92091328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6187c2dca604c92d0708dd7696feb55bfc414e7a61fcb9aed66889daf30e396c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM9A92091331.