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 0x77246e30488ae55b4325b0aa2d23e51a4091df598f3a49329f20fe274942c04a. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff0ff368-096d-4b53-87e6-3df94ebcd849.json and https://artists.proofprofile.net/proofs/artist/ff0ff368-096d-4b53-87e6-3df94ebcd849.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 0x8bf26f3165139fb469b9b522b9fd926ce6b92f351984ceff87971a8667946913. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FISPN1700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb40cd13150da6ddf5d3759beb9db6decf42e388f60290dc98758d08b29747b1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FISPN1700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6693199252c69f7bec525448ae140a7df119ddab6b08d004f4a66a12a3ce4010. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FISPN1700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc3e9f978c8dbeab9af9b6b3ab15100207ac3fad0d10977e5132c0fc14a20ed. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:27Z), 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/FISPN1700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacddea8a7eb2209aeb261a685282c6db1bcc2e33e40e86c7e40f851d146c60d6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:34Z), 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/FISPN1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199a0fdeaca73c022311773e938b1b0a1a58ecaacbb593f00c5ca4048ad92d79. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FISPN1700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46ae87a767f057b0640191221957d5231e3d1bfb975c2488b8737c892d62efc. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:34:17Z), 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/FISPN1700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d0d82eceab221892ea38560fbc2d9ac88324c623feee86f5f0d90d4fe5ea7e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:08:06Z), 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/FISPN1700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c1d027f4981da6c18b057b0a389c6a539e48ca7f4a8b75d63437667cab239f. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:37:35Z), 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/FISPN1700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc7192edb9ce789e5bec7c659d8ee2ff3fca646a58f7b8df9297dca6f75255e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FISPN1700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88753ac40e85638c36661e8a67a8b94f13d87257678486a70fc70a30aab367f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FISPN1700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdd47a1fe8c71f89ed504924b9b988a5ec95c7f85bc9cc2aac47aafd09448d5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FISPN1700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb83e5c8d4f98298420e3ff4b73ed556782024ce0b25a1b2e7683aa2224db22a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FISPN1700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10e631fdd0809e14372f12a86e254970d30d398781f11d85b60d1ce2fc68560. 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/FISPN1700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898ba9f763ac8c5779fa2f7c2867332bf26da324727226e3f01b5144e4fe77b5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:28:41Z), 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/FISPN1700071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c11ec8a5cf14671a3bba403602376e4e0e05bae61a0e367859dec3d40f4c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FISPN1700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75d39ba54c76230c30d710d2c0570120914d68f428369f3e27e4fdc8ed3768. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FISPN1700072.