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 0xb21254abe70d2693d2b09b6e632f41dccbfe525694341493891157df904eb763. 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/daad47e7-9052-4d1f-be9f-94f29d47f789.json and https://artists.proofprofile.net/proofs/artist/daad47e7-9052-4d1f-be9f-94f29d47f789.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 0xc6edf15f8363c9594ae4811e428269f644e6e62a654f5a87c5b33e25c505292e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SEXPH1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4ff1d623295611b0ddb5b79906dbde3ac55312810d21577350f7410781dcfc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:50Z), 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/SEXPH1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe01ed0357eebfb6c4891725777c5fcb665b5953dd69d45c92c057cdb9a3b34. 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/SEXPH1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0126b4283380d16725b34ae02509fc1d9ec20fa4f1b22aae0f36dcb6feb8555d. 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/DENI11200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0d86bbe26d99c4c0a0a060b3769ac2946f95380a10ca3951b5113aabb6061. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DENI11200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5313ac3e97988323cd095209d701d44002bee31add737002a8d7833bbe23a96. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DENI11200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ed0c523800999dc78cf2a8caf8ef04aa66b5a655117bda570fb000098a59bc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DENI11200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278040a41a31d7760e1c095421ec11a8031507860828b13335e8e66c9a767067. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:48:23Z), 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/ATN261560301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760e8ccb078d6daf639db770424137732755038f25d96f4ec417013557da3c7b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ATN261560302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4b80d62cd0cc369b5b58db1b2b38cafed2fde0b84436ee367deb0f0281d33. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ATN261560304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb26afe7d68f491bf8a178c016b2587e426cca9f9655defa219865bcd17147. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:03:23Z), 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/ATN261560306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6617ef7d108d626d3de602ee07f6035ce70ab3a182c71ea1d25ad121cc766101. 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/ATN261560307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7983ea7e763943a26891f35dcbf292219ea9b604325b2e3c2d1300a7299f28bf. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ATN261669901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9271b6066b76680316b846376da254024776a42d9742d84a22089a1a54204d9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ATN261879301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97427aa25d85f16dca64df94464d89fc7aee5e7acaff517518979b8119b3afc9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:44Z), 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/ATN261879302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef251b3f1e1abe9341163ab88d464e56afcaa1f6678ed077187ce798c96c1d3c. 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/ATN261879303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b63e9c088724387eef44cf2fb96561436bb2c0eac8bb1f4952abe162abeee1e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ATN261879304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a49b3f206ba1ccfbaca03647f57afa5247d4956c6534807afa05245754e7f8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:11:03Z), 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/ATN261879305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8925bce1802b9cd36dc9dda9b727c96fe5e93baae691f30869cf9d0a14fa21d2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:52Z), 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/ATN261879306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bde4fdce1d7af71a3631e44e40070930f87c9a830651c050e07563cba99eae7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ATN261879309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcafff2c341adca5cd0a8a4c3f4fca0673e5c9fd734c7e9d657cffe2a22ae00. 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/ATN262526801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeafc2d07010b40aeab6059e346874405e619da259def3cec89aad136cdbd6e. 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/ATN262526806.