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 0xca9e6619f14d8e2bfeb1f99abcb01db91407cc98c56e94ad1ea1b4f263be8788. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27c6a3f7-aa4f-42bc-b551-70febba4257c.json and https://artists.proofprofile.net/proofs/artist/27c6a3f7-aa4f-42bc-b551-70febba4257c.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 0xe8127e8999100e352012885dad254fcbdb941290558257b4fb4309bacec8e22a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA82058130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b6607d6a466e81f6e527a6d8b1a008936f8f5b5b391ed2be2e37d656867b8f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:09:44Z), 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/QZK6K2079449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d28d82b89d4b408d62cdfa16b3cb826446872a7bf99f8e8190598bd9f834d5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZFZ32139060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cf4bb69d6d20bf2d674e6029ce9855875372a6b2266488d8327bad0852b5fb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:21Z), 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/QZK6J2130340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2595326b8127b5e4a68fda8358cf74fef5f226105a7182d50d4be1d1d238be. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZPLR2183055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e80c2b9ea9651c0f68839d0e76d0472f207dcda54fc8bbb2b20caffb05f767. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/QZDA42230151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe04cb3dbcb430bfba7e15f122768b8b3ca62fcb1173d6a5ab0417c192385f12. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QMEZE1883981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2ce95d8a7c9ea832b01e84713db61c83f260c0884d14dc9c6789319502a65. 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/USGAC2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50d5ae7eafeb1c4f29eeb865a7c4a11e0693e02d981153eecf7247c76ea6c5c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZFYY2005946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf90e1d79328f2e63e1f797a9f1fd29d2b63868731a3b38f1ae060fd98788eb. 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/USGAC2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e1f94f8cf6beec629ed39359a9d92a6580633dc34eb2cef104ec74cd3561e2. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:43Z), 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/QZHN32340910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f569e1b3d19714299c6481a90d75b675cd88f38af40d635fd003c8d9297e5. 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/QZTAY2373568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb6d7195976cc3a0fbf5fedfba3b1c441a06d6c4c0443813d23193fddcb946. 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/QZNWV2378372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c50b047e947b6b19f8e02b3b9a071bd4e3b173258bcfb281e5972218389304. 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/QZHN72027614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f5ad0f0e40586719ab325bae29cafaf9221fc77aea18874ed60b37f0fc138f. 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/QZFZ72468048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313024e55c394fabd2821f753ad95ee1dfb818132b9b3dbf42e628831c1b79b0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:51:36Z), 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/QZZEB2469209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac33e66f7adce572105a7814ea08f4632bacc141988a5283c9518f259a90ebf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBRKQ2524892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2fcdd0f990e5d9c26d430a7a4f7dcc4d791e0a87faba98a388108c05f5c1c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBRKQ2524900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac33e66f7adce572105a7814ea08f4632bacc141988a5283c9518f259a90ebf. 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/GBRKQ2524892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba145ca8bd42e4f715a862422129957f5b705dcdbbf14b939509ec8c646703a. 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/GBRKQ2525170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2fcdd0f990e5d9c26d430a7a4f7dcc4d791e0a87faba98a388108c05f5c1c. 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/GBRKQ2524900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac33e66f7adce572105a7814ea08f4632bacc141988a5283c9518f259a90ebf. 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/GBRKQ2524892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72f6330f6764451fb51006683f3e9bd58d6f7a691156bdb8c85ab40cd21733e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBRKQ2529877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba145ca8bd42e4f715a862422129957f5b705dcdbbf14b939509ec8c646703a. 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/GBRKQ2525170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c60fd876e68a23be82d10feb3e86eb93e83f8f031ea4dc57969b87b0f678c3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBRKQ2529883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0533b53a68b1421fd068252407b6776496fe7c1e36576f53be72805415815630. 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/QZWV32562958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf127508beb6d5cfcabd417696e20145a7441cabb4dee930c621583f8238930cf. 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/QZWV32562845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5197aaaf7a8733803e68244307d4219a432a991e3ed4d3f04874a4f6848676. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWV32562980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2fcdd0f990e5d9c26d430a7a4f7dcc4d791e0a87faba98a388108c05f5c1c. 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/GBRKQ2524900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac33e66f7adce572105a7814ea08f4632bacc141988a5283c9518f259a90ebf. 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/GBRKQ2524892.