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 0x5dd1570e5133af00b3a424e5c1acce17768ba48726c9ba04dcb53cfc5e87340f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5ba3911-31e4-4537-8589-09c286ff9a8b.json and https://artists.proofprofile.net/proofs/artist/d5ba3911-31e4-4537-8589-09c286ff9a8b.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 0x8952abe66cef8583c05d62d143bc67ae7fbf149462ed8c459184ae5f1ced2407. 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/QZHN62270039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e638d28a8727737c997373cf0b959d22a2a4a1dd9f4f160862292e5a10e6b. 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/QZHN62270041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5da14334727dfc98041a5fb424552b55b5375a57297d0a48ee1a5e81f7d0472. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZMER2280142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e610a4e4d7f7946497d28d065e671d58a11f73ee24784ca53373aee63c98cd. 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/QZDA62347139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4732297b462a61dc8831618b8dc2878ceeaecc184a59b764a9fd509015fa3af8. 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/QZHN52344343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f41f23278d9cd0d01e04df34150ce151c8e0c4bfa8551b431765b9c73858ac. 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/QZK6F2339869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0017614065d72dc2c4b2ef9270350095d4c7ad6813cdb789f9deba23b0f844d8. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:20Z), 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/QZDA82460840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5c562ee928cdea9a168973451aa89f22463eac654fcccf8e1225f018092e5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTAY2497024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5271d466f88351416c7fd07509eff3f9ef53af6b7d5caf820003c36646342d7c. 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/QZWFG2447384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde52d03b6e944d3c35879acac791939c65296b24da28d621488caa4c2835deb. 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/QZWFG2447385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf976e1cfec5993c68fe81792b61ca187663afb3318b01c52afa0a904fef80b70. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:03Z), 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/AUGBT2532934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c55ac3c3e370664a750a139baaacf00ff2d348da99fe79e01fa6f3c98b312f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUMEV2597429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0405fdc4e8e8caf3a6d83f4ad80e707e00ee25b1e6673cd11f21acafd6aff37. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUGBT2532941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6789d4c8beedd75af37923766d161a0d0da1dee382703d845efeb598c8864af6. 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/AUGBT2532942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b458e30eef6e2303ce4c49909f4642ea120e5d10e5bea40ec9a54de82bf8276. 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/AUGBT2516555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357030082d7dec618b97872b2aa1a4f6ec319c017a89a30c7c389e2709e29c4e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/AUGBT2532943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f531752c825cf0a0309115ed7595f21986a566997a4d3f9084001ccc9b45de4. 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/AUGBT2532945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759eab442f0bfab5bba69d2f5664598770501c00ec2eb4f0ab123fccaf2f0b4f. 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/AUGBT2532948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f1fafb002dbdc2b0e4794dd66b5e05ac6b45bac7f9b9ddfb4e4e277d1bae1f. 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/AUGBT2532955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cf88ca829e5f72e81788aed45b315b62bd6609d0d905fea3f04c45be10b8a7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUGBT2532963.