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 0x8325b4d5277358cff19cf75c8309d22a09581bc9dcbf8faf0cac8fac4dd59add. 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/fa93929a-ed75-41e4-97f4-5ce19e5db44b.json and https://artists.proofprofile.net/proofs/artist/fa93929a-ed75-41e4-97f4-5ce19e5db44b.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 0x41a02ec3798851896d4e8c81385e0a3aa330f961ef0c658b4f23e40927908a0e. 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/AEA0D2240683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66741af97e029e00ee056e8a4fe057772b50af151014c046c5c2b46c12057ab0. 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/AEA2M2111829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3731a31f32f56e0231128f4bf5177f385feb3c30db2f480678534f610de9bf19. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/RUA1H2092022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cd2acc001804b2e21e4d6af34da019958e4f7505cad38070f3154aad41fc6d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/AEA2W2367896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a05caf039e5c903beded8b7b2d7cfeafd4639a32daedfe52d7e2e628dfe965f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/AEA0D2031707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f2c8533f3ffadd5286c579a3e11c13879072d483a76220d8e229579e8eb678. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AEA0D2044181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eb94c5ebd3492a69fccadc21a4c1f0f2b3e18f815b1c7d81040c8228bf6035. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:21:19Z), 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/RUA1H2115952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11975dc0118016c5d2f96d096fee4765a6bd8ec4b7d419b2945317fa73547d60. 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/RUA1H2115957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47326f11f35cc030389087cf4ed48f80c392eba15da628c8c8d68ee046e94978. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1H2115958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5954790a20abb124fd057f5e72ff527f128ddabb05f6a28c10009bb6a09dcf2. 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/RUA1H2115959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0829767a6edc3f958803f5b3ed9f9887c77e8ccfb9dede7a817ceadcfb90e22. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1H2115960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa063e1e5ab37ad14c997ceb2e6b6a486da593492b1b58a101c604e010b8f142a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/RUA1H2115961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0950eb704f6da7d7af2f76a88228b547a832f64aa9926d35e7d6b3f521c825c7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:04Z), 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/AEA0Q2102891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142cd378b4a148d1ae12c793be03dc210b0463374e8f31c78a4fa270e1b1b1d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/AEA2L2360803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0d7218a47718a5b9f79c60380aabd39cf8bd86b9dc3a7fa9a74d9dd4de983. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AEA2L2360805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c65e0db077e9e9e99c5f1575dcf4f9a2106291ec28695be928d370792f2cd9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:00:52Z), 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/AEA2L2360806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25360f3b799670bf32e305b77acbbe06ed26c631b7690553d2951cf2b177480. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/AEA2L2360807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d2209e73a48b3c7601bde908c407363883761b241cb96a687e5b1ee0113a90. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:16Z), 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/AEA2L2360809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4922a0cb61fcdcce98930621baca195dcdf5125c3218971c18ba4b6e3f8e0d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:49Z), 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/AEA2L2360810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf13cfb3ae1ff95833b0af9346cc08a61d1825708f797797412768d9784e84. 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/AEA2L2360801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142cd378b4a148d1ae12c793be03dc210b0463374e8f31c78a4fa270e1b1b1d. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AEA2L2360803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69465dc840002d5f6e78a0d5a9bec1cd6b2f419a7db08a857b6d84d8491ef341. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AEA2L2360804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0d7218a47718a5b9f79c60380aabd39cf8bd86b9dc3a7fa9a74d9dd4de983. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/AEA2L2360805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c65e0db077e9e9e99c5f1575dcf4f9a2106291ec28695be928d370792f2cd9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AEA2L2360806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d2209e73a48b3c7601bde908c407363883761b241cb96a687e5b1ee0113a90. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/AEA2L2360809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f23049c9c9052e83f88d515a4307bfc2357de228dbcf790b13397132851e244. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA0D2327849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dce7f8a8ff9b60eb4023ff33c007d66dcaabf0f77af24b8421e3746118c434c. 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/AEA2M2401778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc404e6d49a04a8488d9a7437a51429610530a8d46639aa4492a5e91d66c064c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZW9L2452124.