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 0x9c0e46867aed49d852930679d1bf0d69f0fc981647b77fee912370e717d26010. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6fc7373-59b5-446a-be76-fe44fb41276f.json and https://artists.proofprofile.net/proofs/artist/a6fc7373-59b5-446a-be76-fe44fb41276f.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 0x42f58cab79330165ac53be8a7869898dad0bfa5bb9c5709a8c3ad7a0c5a58f1e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BGA472406795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ce866de330242983254d8b24ee5556db5012cff5163ca9be98d6a1aebb62f8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BGA472406353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21f846586caab5bfe1f2fc452113e7e13cc95acfa5950025a49c3ed05f88b78. 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/BGA472235376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcb1e0cde05b906789b87e6717b7bed62f6de5048ebaf256ab45601f365b288. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BGA472235379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc341f9e3aeff7944f3ca5a948cd61d58128ba433e179a69511e8e950948c95b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BGA472235381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0053b2bf77fa8222ae87902dd9b191e626c02d778fbd74f16fa7e4e1bde12a4. 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/BGA472235383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76239bdd2ddefec5931890fe3a2789597e2c8e894c1c91159ed0aaeb339c3e84. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BGA472235384.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aab67aba67c73c6ea60fe7eb899f395074c9b52d73e3bf2b0e27dd0ea4ddc97. 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/BGA472220368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c667901652e5d9a77f084899e06695bc6059eb7503e7c14bfe9ff0eed80470. 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/BGA472212951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71e94edbd60f60f0e7c5331e42b338b9e1b40e60fb14c6148f2adcfad4d17ed. 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/BGA472212952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb0c712f7c399902e16b76f513876dd8b6266cccaefa3c6f40e78675a31aad0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BGA472212945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30328259239112d90e97e8d067472bb07cb2e1ceb0d3f6b10fe755f1e9a055d0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/BGA472212947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff2de18b896ac5432f9b9aad74169649b50983f4411f2a15bcf8e82cb09bf9f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BGA472212949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280754b9760f5ffff7c815aa88627e80fca61501637285f7aa1de95857d17fc8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BGA472207706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0840374f42e6c2a1d7f3beb8704f88178310ab8768bd2ef75e15ce380cc5bd39. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BGA472207691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65145f8af893a00e53bc8ad35b2558b623e708098a35200adbef5dc41c36a0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BGA472207695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeade9e77a56227202251ebf844150c95f31319eb19f1ec65a2120fdbf1b3dc52. 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/BGA472207696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b443ad7379d550a8a75131d56ac0d00c551b3e0797df205b670d0988146c20. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BGA472207700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9cf96cd71c9b26f206e6090f3199bf65c3cdbcdf6d6627d56fcd8b0ff1e884. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BGA472207697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175ac108f91b651abea95c82628d2c3e8870bddc7dc89f1504b32020b642f346. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BGA472207698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cea6c46a640fb81ccfd9bcd1a03bb97fe30bfbb50ec3a044ffeda066b3f7bf. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BGA472207699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a1762acecbcd586b5b033d6f2476e16870166edfd70ac49d26c0adec121f99. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BGA472206986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab7610c93989d409c50596bafd57125ba5349e7b52b2de24180541054a49b3e. 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/BGA472206988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7675a0e15c9139730a59c3875e0e2773967a5195c35392873b3509f2ed137. 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/BGA472206995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b111a3a881508ab30d230eb0d189b7e72de25a252c18711572b1febc104302. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BGA472206998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e3fae525e6ab658912f5fcd818b63bdf2aca5aa30b561ef38290ee0b50def. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BGA472206987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fab06b00f17fb0ba4ae0ef6cf8bf659eadb2030afe64563c6d34b6a63a4639. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BGA472206990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f2b9c99c9a0647977400d236924646947aafe9b65acf891326970be24503ad. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BGA472206996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edd9ecbdcf0a3ea2bacb0354fa717396ff5b57098d1a1f5b215fa72d5f74e4f. 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/BGA472206921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adfe95f283bf5ea3451b4e55d80e843988ce5d816d908515f2b161763abccef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BGA472441880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447df9cc15605b2fba0bd2f1feb71b28cf98d665a4e853fa5a35c1e5afad406. 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/BGA472441882.