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 0x78bf27d31238fc7c2e5de8be0eb58cf535e3f0176909b6ca1a078a8d0b03d08d. 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/9f4ff0b3-2095-4247-928d-65f20ddd6745.json and https://artists.proofprofile.net/proofs/artist/9f4ff0b3-2095-4247-928d-65f20ddd6745.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 0x1aa2ab351da794a4eb3a95d932d9526eeb6ed6d9160c29388d0e63f89a55c69c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ESA012123506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e2c9ee627ec5cd9363bbd33829473add0d3ab14f4dbd7717e5f1f97034656. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:12:28Z), 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/ESA012123662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc91f9ddea2133ddb66320ab6d71ffcf7860bfa68421f94f3b352d8211e75ae8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ESA012123661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46967eb05c08d0e8784e7729f7c44e17943eda3d15704ea08d9bd433b28ad0c8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA012123508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d22ddb58e0329ad6d40e353962af141b4df5fdc808a5b2371323c86958d67f. 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/ESA012284175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafabdec4e9972c3f201373decfacc8e62e5787f8bca50eb707e0a282080c5e72. 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/ES81G2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7fce171ba52a181f37c1fce753760537b3b5c521453fa6b0ae8794c0fd5d79. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ES81G2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69783025a8c263804bb576103a04a5a06741c480f1274b5986de50e76a4d614b. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:44:16Z), 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/ESA012218001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ef8477db977f243584de8af8061010928bb4742b61be179c2f916e583e02af. 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/ESA012231597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12d8538f935b85d03a137a053973432cd9d7eae32a87982188a2ea32c4fba0d. 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/ES81G2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacd3f4012f0acc56e5a874d1bde6375b3ee57c1827c22b8dfbaffdbdf93698c. 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/ES81G2200007.
Dios te salve, María (Banda Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa386b7bf04240d990f63bfe6534d642784152b3b506bb1ec1260eb28d91fd323. 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/ESA092315610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a1b535dbdb00df718d26372708f4038d9ea7adbbed7fd59c5208a72ef5c242. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ESA092315613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734022004a8a01b466a1627363429942029196d67f84bbd333c2497bb87f2727. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ESA092315614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7188ac3358cb590acc07ecb469168e6dd89fb47a409e80a4b508878121ca715b. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/ESA092315616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9de5a6137de60a817b7ba4c08a3625e6ec6c18b2205d93bc59d4910dbf0af1. 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/ESA092320759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4769dc58ff90898ebf2b95fa863e065e14064352fbd277c86d65c56a791d3eb0. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QMFMF2343546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa65da4d6d13affb2cb2814caf7ec0cf2cd61762fc89b714306f7cc9f4949c2. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QMFMF2343547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cd9c53cbaaa1fed6f57ee99f9a2f47e1e9834e04039ccf5301d7007b4a728b. 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/QMFMF2343548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406470b06d509ea68b3419f2c27807ed6d7a47fe9e0cc2d268d321fe638e6d7. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:03Z), 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/QMFMF2343549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd341fb79f0e608a282011afea1391e3836f8a87913a596e05cb7d10414dd6560. 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/QMFMF2343550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c3e308f5131cffdeb278b1305b8f389fbb3e6eb781ba3a7fe00af09f6a729. 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/QMFMF2343551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2cb30aec7af780c370134c7feed8728d4d053892b36afd56486ddfeb4fde00. 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/QMFMF2343552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ea5658275b0177af6f394dafb84d5c38dbf8b8d608768f2b0800acae46e88. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:14Z), 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/ES81G2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2d1fa89000f5e8459a14c6117663521a48918fc65b2e4d9be46e7c853cb6f. 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/ES81G2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196305710e78dbecf670b760e41756c785696b7d289e8de8b1946451d1fea66e. 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/ES81G2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6e987a74005696e4df3fe6ffc1f33520e4441986eea7e706eeaa81dd4f63b5. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ES81G2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a369d50df1ef21b153bf4e5919bdbe87f6ecdcc6a5ede829456c23862d6016. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES17D2201604.