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 0xb2380475d2832f05af18dfe92833bb68456fb13df675264e255f066296b83fb5. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1be991e2-63a2-49ee-8093-5df456b9fb5c.json and https://artists.proofprofile.net/proofs/artist/1be991e2-63a2-49ee-8093-5df456b9fb5c.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 0xa6f986b7d903e1a12ccf4528294d78d612dd5c1a0ef8efa67bd493b6ffcb30f4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:59Z), 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/QZJG52436612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10daeeaba72bc6c1d34b7768ef32f6bf81744e5709844a52197e7f21ea83b75. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZLL92490431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f77232fb581df04b58b47c29720120e97440101e2b37e985462051e46438e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:30Z), 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/QZMEV2425583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24310fe31b89b367f5e15fbaaf640c6a273839b2acb1fc565a12e6d29335a4ca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNMT2478708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28263804d719631835c7587034782145a4b7c228fdf18030fee30303be20229. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:59Z), 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/QZNMX2406517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c613deb9024b77d5d2d824e88b34fbb9b69b9d8f6574d2c4e486842dca038f5. 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/QZNMX2406518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490139efe0038f4198c6e1009c2850f9ceace48869ff00856d1d78406482def2. 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/QZNMX2406519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09b0c7fa547608e65ae3efc50f3ee33cc5fa6126f50caaa2396f4e39ca9ebc3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:05Z), 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/QZNMX2406520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fbd3bbb77b94389b54e91c5948dfba63d6287fa3feeb869afea26f816fb74c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNMX2406521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6184a0af33545a5e8fe155fb01d7dd67cb69647ec0430ae34e831c3510446e80. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNMZ2443515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c57445e3e81f0c35814b5b606d239c99db575dff0198c7e4014e47e7ec60933. 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/QZJG52505613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f5ccac140045eb81d37b81f157ecd44434f6bd48ed9f00a929e52738c1430a. 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/QZJG52531694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be79d0af79f0ec70fdb80ba51692407dc3fd3a2cae666fd8b57dedcf5318f1d. 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/QZJG52573752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ed09ec80541f8a071aa475a0ab01a48a80121e683782692c897a728e9fa814. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZL382546884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa891763e23170b24bfc2435ced4469da58432e223f8bce769be5711a550347e3. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZLL92574122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727332a4665dd1c0915e7662410369d5cbc026b547ac6b07a011d83fe685b614. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZLL92574123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c27bbde1cb91b04c8eaf111dd9e6b17ab7992af92914f1e63da7ae77c920b3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZLL92574124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb345ac0fab9b1f6bdbd496bb28c4f8a5d55db03cfd7ede6549da206e1d2feaeb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:50Z), 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/QZLL92574125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ff53341251e2f5c511bdd54482e95ca789e0a340f2a61e5dff77fdd30af79. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEV2558923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e886efbd959576e31600b885c8708b7169bba7db8aa4368b7feb206e394e88. 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/QZMEV2566248.