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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 0xe3be6409483eecd13550b021bb62438bdcefab92343f406a8567b28e1592bc13. 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/ddb22c5b-6c19-4bb2-afe1-b15ee34766cc.json and https://artists.proofprofile.net/proofs/artist/ddb22c5b-6c19-4bb2-afe1-b15ee34766cc.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 0x133e92717e04f421fac0491041e19f3d352ea791165abe78c566ba3e0b150152. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/NLD2A1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050d164b1b597afff20071b4c6bd055c23a09c2db49f0c3e01515189fd257f6a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:39:37Z), 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/QZ8LD1982421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4b1a1392c630d3ab14d62ec3ebb0974ac13a71cc80057326d190405ec58f5f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZES61998218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f54ad6b27019a4f871363701b9051972c71e98e1214f7d53ab2636a38d35108. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP1906026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f1508650801d1f4e0c8176ff8faeea6680fbfe808bdd467c0475d6732db5e3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:37Z), 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/GBLFP1906032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e19c92e564f09827b3a118ad6c43d61ae0a3c0a44a542cc71a6fc63ed5af3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1948717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87da3e60bf7ef5707567ba4af3942c81c66c1112d425cc5d521dcde35bab0571. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1973416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b122b33049e8e83f66e066cd7b84a571a36e902406efffcbc2552108d9b150a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP1973408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ca68b717136b75e585b3fdfe382ddb8c9033ab874a834c09cd165f42d34bbd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLFP1916515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34bedef9aefeaf49184366d268d9572c627470481588bc670f0841527f41423. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLFP1973413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528d95385758fe69b06533d0d6de9d96dba056afdef35d15b8e07c26a5d65929. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP1973414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fe9a73e0f151267bb7a03ac983bbdb7c35a96de6dbdf398418aea20ba16e05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1973421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343e19c92e564f09827b3a118ad6c43d61ae0a3c0a44a542cc71a6fc63ed5af3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:22:34Z), 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/GBLFP1948717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0702306ea8c476ded3d2c49930ff7f46af5feaae29c4ac8055e2b8e81be9bc4f. 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/GBMA22034690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c83ee783eef0a35f9dacfd9e84a2c29bb33d8bb3b46b08a19f12d777e8a3a8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBLFP2026499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68eb84549ca7ecb27cc5aa610d7d557ab1898594883965f210bc012a808421e. 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/QZTB82477227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea275eade954221e73bee6fcca152c73484bcc0461cfa6fac705a7f015709186. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFG2489236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6820ae5271d1008830e189c2ce799bbb8a53279c61faaaf9f1a3a8b19a2a64b4. 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/QZZ7W2435655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f2864d413b0e25241669bc26adf9929407229fefa2ab3e035b19588b3d612a. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFZ72567894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b0bbd8c89a269e6ccf4dcf3c6328060dc7e8134f10c8763c31daa47a4ef873. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPLS2495436.