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 0xb530152c13609545ed14fc304d9ccca2bb2f2e908c2fbd84ce896739a1363e2e. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40afe420-3144-449e-956d-11d7d9ac84e4.json and https://artists.proofprofile.net/proofs/artist/40afe420-3144-449e-956d-11d7d9ac84e4.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 0x991423eb28aebf24d1b3f166eed949a153d42b3ec84d8e438081f7487ad828b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHCR2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d9a8e6136968c5e396ae05f1530686a493c31d15433d660979854fd126b05. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHCR2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cec418c6be9a40e79180a5aa1639f29bd34c430dba5519a3ed7dd0cba88871d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZHCR2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0916757c759ee4c715ce93d4deb4a70329c71a04eaaeb82512887a552b7ae181. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHCR2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e672bcc6a639e61b13af11791acf45d3093baf7ffee49cf08c6b1a334bad19. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcfa7a71527493875ce77b382bfb9e75336ede327483eb6f753331a0db85694. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHCR2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f60ea7aabc0def4e976794840ff2407901b0e629471d6686ab35167d58168d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHCR2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a727039e2ec8a503f2309776063a64ef802c57783ae8b784b86e710582e508. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZHCR2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5950a2916900e9c7f8bb0450b9323bc5f40d4e918be5f17e3451404250f0e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHCR2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6ffd58261ce652e17c20d24769a84934604bdad385c7991bd78436c166608. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHCR2000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9237ad403c46cc9742f773ba230e7a2d2839994bb8b50281cdcb5d0c065248. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHCR2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f5b05c31bb84c3c6bfc898f85439d4a70567252d14e3ef75101f7ace9ce7ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4551b60791e20b6d27dac34ec26a979008d7e7eabb8facd1c9dc595efe2bbbbd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHCR2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26956b1f9ec9f70659d890220914c0771adf6f70f7f424b5a5e80b041f666ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHCR2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f0eb30735c02c9cdc8a368514a1a3b237734184f837d196dd98bb78c5d9d07. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHCR2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d706901bbc0f581e4f073b6d0123f0465b5438116a83c527521c305aad97cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4123d926a109c659eb048f49dbfbc33dcfda493bc91ed7c9874e5417230db9a5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc44a433d367a7fec9fa57b0b0b9716135584fdb9809230efb9c01bd8e3faa18. 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/QZHCR2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a739c833a25318db09ed7aeeacf5ff025fdca59fec9f6aa55b136fa811d2eb4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHCR2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3375e9cffc1f090beaef07f2ac23cb73851712da8ee7a04738652cbb9ec894e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDD2225187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6f1a843e37c78d2b7d41b9121e549ae21ef307462929d120e34419e64aea8d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDD2225219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488dd28806748d9ede000d733b4fda6ffd24bc1e07d118e5a02010463f8a682f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZWDD2225154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e5e5c4ff859ec0d71cae4f6d363d893c84d58e6d2a3c3f317fb105e98d441c. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZWDD2225225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58fb7a58f623ee526e263d4d4367e3209018e26cb222c774198eff50673c62d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZWDD2225166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d228bb3f77bd00ceace23bffff3612d17631fa41b087f416b5d9b95255937e0. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZWDD2225173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c8863137c33a864fe6f00602c2c616ce665cc9235bb26aef6d1b370f7e8a5d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZWDD2225178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3cf6b36bf816a5625a0847d8650098dde8262cb9ace1ad62089643756b69e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDD2498577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e77abc77e33bdc0c01c27d8b7110be92650e37cab4e7377ec92caf5d0b01a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMHK2225714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc943a2743c86ec319aad6f781768096ef2f2afc11d93928ef39507d88fe89a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBWUL2257882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc01520427387de28a59eff79e9de6d824bd0936a12cc243003aa0949c14d10b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBWUL2257885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78aa4e83f05f65ca41455bde3a8c51060a7f6056aeaeaf08936fc000c714db. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHCR2100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa662ab5809a5615e34be872fc0cef8ab099be2b277109e06e4dd82d084ab9f38. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHCR2100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab50588f22659968cf3c5c08244037348ae9c3bcd595855f2e2f7caa88ef1238. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZHCR2100136.