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 0x2fedbda2e772207f388ddf3dbe8da1c92d9c4d92b6ad00556045713db49d0aee. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a799e22-70b8-4c0b-a384-ab3a8da8e079.json and https://artists.proofprofile.net/proofs/artist/5a799e22-70b8-4c0b-a384-ab3a8da8e079.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 0x4cc8ae2b34f31a1aeec44e9164f83e90fff253a2437c70d5647a0f4c7d6f9656. 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/TCAJS2591160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc392c4fca2544b0e42057836f671ea7bec953a8121d6b0786a698ffeaa52eb6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJR2591108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51cdc06754c9e8fbcbc6d96615374e82e02d96e3bff96a7d0b8d18131fb6c0d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJR2591020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860bedeb9d905fac8ebb719ac22ffff1f04ca411c905684fc76b6758c2a677c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJS2591137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87815fd09a5c258dbfad262c12a7ad1243a051cbe4126cd8616aec9436310a7. 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/TCAJT2590971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760aae247f72a07b047e17f6eb98539cff0faa3f7d500970911162a83e3a148. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJS2591095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424898f6d2f470ff32df2ea7463772c64c4e5d2b69eb3983b6b9d2d4c26e3aaf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJS2590987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b4dbde7f371d378c2ac38078a6aee101345d45cd0a2f28c4b9aaf1d20b8d7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:48Z), 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/TCAJS2591045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4903e6304e8df306d8c897a06e591947fea5a216aba462e3fb18cd16042cdb0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:54:12Z), 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/TCAJR2591032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941724fb809bb1fb6603287d88cc8a2e70bee548fa6f97834615c44d72cb6803. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJS2591182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb97b2938b860bc6d982b80f2527fdcbb97de9bc2da98b08c9eb890816645e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:18Z), 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/TCAJS2505090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b3c59c9a8ff191482a30adea720185d9cd843cd16256a36b0dc02656bca86. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCAJS2505047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0e4857cc1f39551087d6d6738ae0a6966c90635e682fd1ef8e157dc9f17a00. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:19Z), 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/TCAJT2505069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b07c0edc15e253b143f2dae877cbcc9e2c7d3eacf90353d7fa378a2c62f1c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJS2504986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd336475a3ed65845b9179a92dcaf8d5ca8cd3c98cfe215f544ff90912ee4035. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAJT2504883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82096828ac86237cb0215bca997d61b7317c8edcf255f15861a712c8ccde608f. 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/TCAJS2504890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6a1d0a736625af2787d404d3bed540462de4a0c862dda877f42d58f07c182. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJS2504895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168fb80c613a5aa120e9e774a9c2b8f8f83d2415113799d4ed67e22512992dc. 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/TCAJT2504916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db8bf60e98d539d54a515d3fcae3bf33d1a5d6411a06f06b4ebbf4ce0cc661. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJT2504927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46deea1b70a13720785f9b8494883829f9f89e9aec8f1e9199e6dc0d46c57b2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJS2505015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e3bd316c2720bad90f4f8b5cfa4f2a7ca7cef9545a01a8030d540be75277da. 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/TCAJS2585824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0825920074e1995ce95d2c848abce710f212016a1adea12ea1112127663299c4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:11:06Z), 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/TCAJS2586574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9456f4381fdf385e3aa654285d376147dba54ff939b3f542dcb31c7cb279e2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJS2586584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c8a149df3c6079553d67dabf762ae35260e6b425ec5ff01d5132f73c6edb9e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJS2586590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b63b3daea14f66f94207f3863407b33726664e9cebbc0dc3acffb44af9d3e11. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAJT2586603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4c8b0bfc110732d180a049599dff07fe9fe7b8e5cf90102a3549db34da2865. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:32Z), 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/TCAJS2586609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eadfc3fbf6cbd94ae94ca070eabafbd0a615ac019162400d591ac8f62aa32d7. 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/TCAJS2586612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c99f828de2805a8a9065dcfb15707aa7dc0841370cbbd763f7db419a33470. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:34:23Z), 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/TCAJT2585856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839e6b36d4b27d6f8366e630cd3c56e1f51aa1ead297069c51d778bd3c41efb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:35Z), 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/TCAJS2586366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa5b7b5e792727d7a0a33f988680115e05c312f56b945904a73dfbefa352ba1. 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/TCAJT2586467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac1c1673404bd27642221394894f07b924fdd17b522c9e0c7f432771e0af5e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJS2586418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d4f072ac0d52acb0ef6f9f01ed31995013d44cf54ac6aeb66eec6b37490686. 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/TCAJS2586340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5b9ee9ea8078f488e3b31141dac348937d721b62562459a2f9313e5f045273. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJS2586390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e78827ca98a6ee9a81fa1912e01586b54fa0830b7bacd88f9bf4275eae0e6. 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/TCAJT2519342.