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 0xa66f325f6bd4399baa38667b5f1bb35a66c4671bf9d73051437fab7615e4c6e3. 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/5e3f4e80-2b50-4dd2-a51e-cdaa09426c77.json and https://artists.proofprofile.net/proofs/artist/5e3f4e80-2b50-4dd2-a51e-cdaa09426c77.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 0x25b20000c8c5fdbac295e7db6cbadcd9ff764868698692f6f4beb0734abf39fb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAEG1975943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda518511d07d5a2f58cf66788048ee79c78d96a33384387a34d03fc781e4903. 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/DEBZ72100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0199f7c25b06cf9f34ac6707715c348d60838266fc56f555e53232f39d651cc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEBZ72100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc068a7a220b266b29f7eb365fd5d29bfe28d0ed9905d49b82f0ea2af67c87dfd. 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/DEBZ72100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59790b85aa368cb8297c5fcdb1e63f9501d9b17db54315082fa02372410ee76. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:00:12Z), 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/DEBZ72100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac8add9d2fca44924f137a7296c9cbe10475cbf9f5341dddfe29baae028a34. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEBZ72100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ce30999df420afd99a19d5c1a9dc928c3f4c7053d30f8443e763f4a05c166. 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/DEBZ72100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107e94b4ede2e8697b09305e1a0481e4ea79e91f00a98da0aff2f01263f63dda. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/DEBZ72100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee707e45fa197c98bc98cafcc1ea18ac487ecb5de89d339b9a977735bddfd1. 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/DEBZ72200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe263b1b61c1f2f24319580b403afc948f6b52eb7257061764c58b9ec004dd66c. 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/DEBZ72300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d54a50017b1109160386914ec06024c43e9e0acf0c592203a3aeea9cf2641. 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/DEBZ72400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe263b1b61c1f2f24319580b403afc948f6b52eb7257061764c58b9ec004dd66c. 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/DEBZ72300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee707e45fa197c98bc98cafcc1ea18ac487ecb5de89d339b9a977735bddfd1. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DEBZ72200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e6acf0eeaee8fdf88bd881856c91feae0b8177e8c28d74e258ed0ff99e67f. 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/DEBZ72200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76d953ae1f3a99ead0ef8f97adb158552408e534b1bf014e8b27158891e812d. 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/DEBZ72400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861412cf8b0eb46ce8e31f9028aa2640226191171f75c6edca0a300aab8a158e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEBZ72400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d94abbecb8cdfc61ef1ddaa78356d926372d5ada95ba378719f79fdbb41ef. 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/DEBZ72400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac722f1af99414228ab702223483ed52fa04ebc989a0fe453a71343a536b915. 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/DEBZ72400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204e0dc75dfec61389e8cf5b180071a78da68a06babf92c5d16561c2633332e3. 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/DEBZ72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee707e45fa197c98bc98cafcc1ea18ac487ecb5de89d339b9a977735bddfd1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEBZ72200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60642565c6e6b85eed6b558934f9a97646a70a795e3829ca0795d66820facbfe. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:36Z), 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/DEBZ72400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9e6acf0eeaee8fdf88bd881856c91feae0b8177e8c28d74e258ed0ff99e67f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEBZ72200220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc4f3b7030fec06c5776a3df7d0fd89dce7d8efd9fcbfc6733ee79fc3bdc5ec. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEBZ72400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49431b7a781fae17e29c4bf1a46b2b04567476d32496036488b4afb7402b8c7d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:34:58Z), 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/DEBZ72500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe1fbb5399756ead01ddf66a2880e97702aded9b4a4c9b9fcc176bd436106ec. 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/DEBZ72500188.