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 0xd5b824bfd750245d8631b2dba20a0c32b32bf6c4d4e1b753ef9cf318eafd843a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e555f14c-3722-4d90-9500-6f076201d1dd.json and https://artists.proofprofile.net/proofs/artist/e555f14c-3722-4d90-9500-6f076201d1dd.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 0x099ed2da17676f8322e31b0a2bbafe2dd6af8df261d218d0f942e1f1dcde51a7. 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/SE6QE2185419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f49e4b671ed0f1db4ccc76b8321e95a028bf9c160b00738851136f9d7763eb1. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:34:40Z), 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/SE6QE2185424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ea56a6f22a829d89247dd5d81313fd761349ec479fc0ea347640bb78a9940. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:49Z), 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/SE6QE2185425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe06a9d7a754b46b068c93d2c478eabb58ed397b556ba2c00fa5df8f7214019d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE6QE2185427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f789e9affc466fd6498c9ccb520bb61a9ff0adae9f192deea5c0c5c53a7776f. 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/SE6QE2185429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f21ab22dea7ffeadd62751b25c2028f8b7c572fece481c168c60427e40a329. 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/SE6QE2173881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011bc68d6ad4f62ce8fe34642cb36b9afe1518d3df5a1a04aac0e19531480868. 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/SE6QE2173883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034b640b27bfa4cc26b1d8ac81a86eac74c89644cc3bd70ea47cb863d0f2075. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE6QE2173874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d990fad2eb331f1f621080938aaa786bdffe3684621d545a61287e79f6cd8c. 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/SE6QE2173877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe7d27c31afef1ca87e8fe941beeba24c3e5eddcdcc86d26abb5866b2309e76. 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/SE6QE2173879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f11e6c8cc53d7bfc7697cf5e36dacde6d4fca45b861469602da128ae289c9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:01:49Z), 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/SE6QE2173880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f21ab22dea7ffeadd62751b25c2028f8b7c572fece481c168c60427e40a329. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6QE2173881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7ca0f8337d1f552308d6fa93514db6e645079ac1d900707bc5b6c938aaab6d. 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/SE6QE2173882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011bc68d6ad4f62ce8fe34642cb36b9afe1518d3df5a1a04aac0e19531480868. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SE6QE2173883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd52bbdde06d7a2373232afc3e4672d42c6464732fa4eb0b9cc4212d61abc06. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/SE6QE2173885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45466c8dd55606367aeafa99ff85c0d5cee594d9d7c328269e36351e04dfa8b9. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:54:52Z), 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/SE6QE2185418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099ed2da17676f8322e31b0a2bbafe2dd6af8df261d218d0f942e1f1dcde51a7. 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/SE6QE2185419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538355cd12c7a84db9988b9c9d7b6adc852759da82f0dad15b6b1f0c0eca680. 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/SE6QE2185420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3597e417fbf7a1559ee0b5eb160519aa5721596a0c39a6a72584aef2a68d69ea. 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/SE6QE2185421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917cdb085d3db78490c3512dc20a752505762d52260149d7013723e24c1b9032. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/SE6QE2185422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5072f45f3873c69aca664784d7cac75aeba69c9f20298024e508af39e0c1e5. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:00:17Z), 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/SE6QE2185423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ea56a6f22a829d89247dd5d81313fd761349ec479fc0ea347640bb78a9940. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:04:48Z), 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/SE6QE2185425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50afed5ab353abf1380bc7bd24848b9b15d6e062aac3e77d3445b1284cba39f. 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/SE6QE2185426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe06a9d7a754b46b068c93d2c478eabb58ed397b556ba2c00fa5df8f7214019d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:11:34Z), 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/SE6QE2185427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f789e9affc466fd6498c9ccb520bb61a9ff0adae9f192deea5c0c5c53a7776f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:09:34Z), 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/SE6QE2185429.