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 0x804f0e24b7136d742dd9aba6b25a28a9eb5035a3af6122dcc6bc9659a062a52c. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86f814b8-633a-4d30-a1c2-eb603ff5cc8c.json and https://artists.proofprofile.net/proofs/artist/86f814b8-633a-4d30-a1c2-eb603ff5cc8c.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 0xddf5cc6d3dbf1576daf0b89691e3cc9bea2cc23c76a7a60cb2222d3cb841b44c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:33:33Z), 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/QZFZ22071754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc4db024aa2d85739487a2c436f33ba0b15e59f0a462f28b1a30ee1eaf562ad. 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/QZFZ22071755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34411505dde9cdf8b629c87ccc30b5a5601cc4941395fd4914c56b23275bdfc1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFZ22071765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4180f8040f3750207670276fbd6dd81374a0cabc5a4c9db58a7d3dda7cec11da. 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/QZHNB2048930.
Bailando el ocho de Agosto con la Banda Papá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef7f15bb55cc76dc4de67b899473ae1f82169534ec5bbbdd5f379a10a9c58e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHNB2048934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a5d21fe43adcce5d6af638d8d6437b2716c0d366ac864a64f8e98324be152e. 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/QZHNB2048936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5048757939491ffde7921d8cfea27b685ab635ad6fb03ba7af3b68281c1fd39c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES92107229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9507246166e14f3d35b62b4e3013c956142f914f793987819538b71a2e7b67. 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/QZES92107231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cb54ea1dd1748b29f68ff539cd284a41a6d302bb070f7919e8bb91e1cdc2d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:52:52Z), 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/QZES92107233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02290f04d2c9f06eea2cf226ed9a1b7badf7482c46b84ef1ca6d68c0c86a10bb. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZES92107236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505867a568fee989b308a0354e1f3e55bcb7320eae896b448ef8c27f803930f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZES92107239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e089c30637f2b815a9b141500f42481bf4c0db99d15ecd2358a82b8cd7c3e2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:40:33Z), 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/QZWDW2408357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e2577462f4e05a02edbe9e64c68dc9d0db8ce0c80b60ad1f4de93614d966b. 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/QZWDW2408358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b6becb2e16a6dec79c655c29e2d5b4d1ef1025f1555b36d9712e4864749806. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:54:08Z), 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/QZWDW2408360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3bad89513e0fe5babe1a9cb0748862411d81ecf3be34f93c6a78234f5ad188. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWDW2408361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248693c6f205e5d78665f6bd6469cfe22e22951c43c7016d61aefe15f65b4ebe. 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/QZWDW2408362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05512663e00e7da4a4469e356b43382d0bfd40d979687c45c4717203f09e80a3. 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/QZWDW2408365.