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 0x589984deac43885942c55adf4c6417cf96bbe6e994a07c5989925cf8995fd056. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2362d310-e491-4ee9-a9b5-09a783e90ca9.json and https://artists.proofprofile.net/proofs/artist/2362d310-e491-4ee9-a9b5-09a783e90ca9.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 0x7a58949cd5a5957e373970d0321bd5a9819b3d8b0a073924e233a78948757c3b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:05Z), 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/USDHM1602933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6159f12c84ce222b1c375dd09051205db7542b6896baac45cfd1307ff682722d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZ4JJ1728584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc5965a6566b442fc950956595ab56612fbe1e02b6b8c0d6c2da82d69d200a1. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:42Z), 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/QZ4JJ1728589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678eacd0779290615de8af4d38f7b91a890d9d83a6a86a8a03aaaeee4bff6866. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ4JJ1728590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a85f53ab1783eaac06a0c70c3804ece0ac22941535d7233bb876cfb54f002. 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/QZ4JJ1728593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc9e709ffcbb868b03676588e0cf5697f3a5a082910b2c1a3a3bddda1dcdc5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZ4JJ1728470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f085c3462c1f96382ae5ddb063e5e5dbfd977542a0bb8b0582420391ddeb0a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ4JJ1728695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c7c001307ccef80b2e87e4c7f758c14bce618faa20fd18364ef64f612e887. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ4JJ1728696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45180c7f9a8e680af9fafe487bb712f43550e16c31f35f183163b373e514d212. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZ4JJ1728698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a08fceb1be2226c3b52ac52cb4f79a46dc1229f40ac39130735993ae77464. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZ4JJ1728699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092ade5ab985986dd6e78f99dff23bc8992fa4453c85181e660d95c8e958e57f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ4JJ1728700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa47bca35d9361b92c4d2877f218a3648d46d948c06f69a89929734c5f5963bf. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:48:55Z), 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/QZ4JJ1731249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72c25216eb0cb86173d810edc2bd5a6c63beb7577604d6a4e64e55919f90ca1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:50:29Z), 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/QZ4JJ1731221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ad50d0a45c9fd07211ab9e71d9a6864ecbee1809644bb8cfc37a2ca1a09435. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ4JJ1731224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb509e08feb37abce8c9a912226d0617b1d99c1d68b74c4c223b6757ab762aa. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ4JJ1731227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8cc7fc9feb4f6f89dfe85a686a5be51ed9fc3c4387f382653d3436fb2ec660. 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/QZ4JJ1731230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af97f0108cb77b2d4098d6b738bf75f8afb45bf13eefe018de3601df015ba2d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ4JJ1744271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cca10ae173dde422ed89d2a8e689ee2adf67a64d3d301d36998276fbb7a7ec5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZ4JJ1744272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291f1ccb99157c4ddb04efc25b6654f42755aa2064ab9de1fbe8bb680164428f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ4JJ1744274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f71b3e1a541a4eb712be95ef9d1127dc10662d7ac8ec5e2232d74ec211eedc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ4JJ1744278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6a31f3fa7e5ca8ccdc1c524a2b5336ae33c026e4f4dc101d9c2ee4eaf7d665. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:48Z), 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/QZES91859141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7051706625aa6b9e16c4ec0547538a6539cd6118c94eeb86f05a69d0e7f8b53. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZES91859142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5795eba0ee2846400221e53ddf226e463e67beed9e6e157ac1e0a42aad6ba7df. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZES91859145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c6858901260dd9c5e15f5509f0bde1a3e515e8b44424b4c144a86d14b3d961. 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/QZPLR2036062.