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 0x39976ee35245c72447c7a58c07a9282c870ca032d094047571be39101eb9aca3. 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/a089ada9-6c52-4129-ae7b-77e303329365.json and https://artists.proofprofile.net/proofs/artist/a089ada9-6c52-4129-ae7b-77e303329365.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 0x260fe4e8bd565141a51d72cd5f17c3fb6350b79270d100dbcfd567796a22c2d0. 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/PLE951400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199d373ce12e137ad00295d84313d0978078a2b012cfef4c0b9ecf1649b0bff. 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/PLE951400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcf8eea16b38bf6c3d74aa643d9cd03c534c3fe6bc10d545861edbc58d02eb7. 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/PLE951400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d4d93756b3bfc40e776428bc5e186891ea6b7d2b208fa8341008b22676f227. 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/PLE951400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f7579eb48fd05b81ad2072dbef1340c0ae753a2412872d71d0eaa4d9085fe2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:16Z), 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/PLE951400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebe080219e8a5434f7305d6904176d391dd47c71b441375923f667cf15b86ab. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/PLE951400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f62ae5ef163c02c02205aa96bcc69c147f07401d783c56e069b65639e9c58ee. 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/PLE951400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396578047f884844a1bf764719dff6925b668c52de03c2a6e8ea48215e71e0e9. 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/PLE951400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0138a26c62affdfc7f42c02e64c9e84a77e682bff25943104a413656d5f3028. 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/PLE951400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f4faf5472e5f822f72f2f25307f3e18668d53b1c563f40dd2d752d19830ff. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:41:27Z), 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/PLE951400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e3f2163a57002df381fca5e0020fd425098926704e4ea6abed126a2bd8054. 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/PLE951400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c3c6a43b24614bdc3b60b050a1d0ee561fd165eb9e7cb426986b2d585d7a7b. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/PLE951400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d12c00ebc45bbd1029c9c640c3283c57dead6e07c8c3290590a4fcff9998b9. 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/PLE951400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8bd3aa4f3d89223c4a8fcbe28179460640eaf183ca10234fe9e77bacee91f2. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/PLE951400258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a77f99363435d1081796f059008329146c7ea57105fbe7825d6609f0e78bab. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:39Z), 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/PLE951400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68622e2c662f9d53a162954379497b34e9862bca41a6aa464df68031b69a5a05. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/PLE951500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc710d6d3dbb4a15b6c4fc4acc4831f747e4aa9bc472d829b797107d079514bf8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:47Z), 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/PLE951500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd9a2efb64e9508906ee9533795f4b690f3fd4939d93369293f3a7727772b1d. 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/PLB171700731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586690abd715bb1cf23cf8bcd097dc551c4cea82738624f50ef4ee3dfcf447dd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:47Z), 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/PLB171700733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372e94fb221a14caa52f284def28846a43ed5020694a9de8cae9f734c2f63c50. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:44Z), 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/PLB171700734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65716fa7cd66edcb2ca6cbb3c249f741d11ac1c9ed3dd757e56b1a0fbe1fe139. 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/PLB171700735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924b4f6656e9bca72342313ff77f927fef48ad570d79cf64383a5e996ec2a356. 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/PLB171700740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d27d8b27641cdecf4e82d719e5dc733c508ea48a6a9ffe860fec621f8ef4c. 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/PLB171800633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd1e1377f6a5643e289d8b338ab815bd98d37858f4d02341a3c9bd1e63c80b. 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/PLB171800640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8f61861ed6527fce37239ec65b7a4420e719fa2adb762358b600a56861961e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PLB171800642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c7b631d888bd64f797f5bf505c3dd5771dabcf0f2ec2361a02632340377e70. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLB171800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2012855314ca87dd0914af69d0fa8590d8da190226ab0448827fd0e49a6139. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/PLB171900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5625974efecb34f45f8372d06ee981f5a57fe19566d002fa6712ea726133f89d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL02P2101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5625974efecb34f45f8372d06ee981f5a57fe19566d002fa6712ea726133f89d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL02P2101010.