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 0x96bd680d95df2301a14752368453c6d5edc1b15c21035a621000cd2cfeff2d21. 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/4054ee51-8d41-4108-b583-230197b04c63.json and https://artists.proofprofile.net/proofs/artist/4054ee51-8d41-4108-b583-230197b04c63.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 0x6a7ba42a298fe3e123baf008d2543ad9f6dcd87b0d40cdc69c876f1d04e50b4e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPW462245833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff99e6e36ef921c60ba17ca822839314210bbbd7fc1d30092028ac14ab1d62. 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/JPW462245834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f48f489c050d5afe75deb03eb9e4ff6e18f0f467dff5a506e4cbce46ee1c71. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPW462245835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc22b936b20ccf019858af480b50d822b0dd11738af52361f64993f4627f649b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/JPW462245836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39545b47d8f551f7730bd2567b07a4e13d09133aa141550f83c2b2038db858da. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPW462245837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160d7f8667d492102de1e31c018f8fe3c86aecab0a8db3f96cbfbc0c63189a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPW462245838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc607552635f44e469ffd46bd93211ad888a0eabf0df5c88674f2d0d822d82d2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPW462245847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf87d46c83dc8d09ea5dc2b8e6e54e5e0a629de389fed180f803276645817a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPW462245848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1878f9f937f0136c94bfc15b3cbcaebcfbb1c3aecac447438677755342ffd43b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPW462245849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cda84732ef88fb00288baa74dad8a4628a7f426219a96e0436f97df6433b897. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462245850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd9ff08a483171c1305c5f36e5d204beece6ae2e7191519338b4d9a4b3b9b6e. 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/JPW462245852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cef39c87d3e414ada7bc1a96ad5f9b86cdcf7bad2939728a9eb731e66a023c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/JPW462245854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a879cfa68db9671ee68fa4be55783690e827d1e29d8bc9e104b6defd5a86020. 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/JPW462245856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd718ae4456ba74d30acd3f0208de0e8f156369406b30c91d24567ba9257430d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPW462245858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7874926b08ca4e39091f567445669f8d60f0002be6c7d4f1048f687efb74ca60. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPW462245859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8120703a7dba323250d33c5d0b2ffa0fdb15d858a354acd19bfe82391335c9d6. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/JPW462245861.
Solfeggio Serenade: Harmonic Frequencies for Balance