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 0xfe2d371e5dcc1bf0245f00c97e37e599671f0607185a02d72d071c95d53b5c14. 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/b325c0f5-f77a-47da-908a-8bc71cda3543.json and https://artists.proofprofile.net/proofs/artist/b325c0f5-f77a-47da-908a-8bc71cda3543.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 0xfb42137cb78a1df77d580431017595f1cb17926b8e2bbb5d6d3e9768bee8488a. 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/DEFC10600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1268106910803eaa2036769da83220877a5909fc44a05a26fb5096c6e9805606. 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/DEFC10600141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d473fc950436115d1ecfc1a21f992a6c10f50067c5d39c95093ee2da327bc8d. 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/CH6542161953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234f805ef49dc68e72ab283d401870d01db9f506ccdd2ca17f02ff9f80acf33e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6542161951.
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 0x8053f60011ca0ab51ddc426ffb60522c85b51c24736e9563f0d728a77194e863. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/CH6542161952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab10d6c6fb06183c82fc538b107443447b6f5d3191f07dd7ff7df11ee8e889c1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6542161954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa9d87fe6c77473d52287f173da775de4ea0c7d57b3bdd758bcbe069d66626. 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/CH6542161959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63119aa5fa2f8a20b90011cde64b2f1c9a9da11c52b02488e7a02a2eb596d55. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH6542161955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306754a812b1b61a68522379bc68e787fc9b27531bcefdc15002a1982d01db02. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH6542161956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0fd863e391ff0762a54a30e1c4cc2fd65087983caaaa05d6e86c479b57ee06. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CH6542161957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6672c68a4b0df6a0594032bf505588162ca80076a583dc9753577847983c1. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CH6542161958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df9527665582061248053121ae36c89449387fedbd06152161969d407637df6. 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/USQY51178433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952bcf5644d957bbb51f146d065c6ce14d4787385193073817dcfa9362253e74. 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/USQY51178434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a6ad5ddb72580807fa20d0e289e718d951339561bf0712e8eeb7574b74aaf8. 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/USQY51178439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb072b611c4f65c5fc300e9609d0c549cada5ddec988781ef01497bfe55966b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USQY51178432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69db18e5eefbde703aa780d8ba34b52cbf8c4fe7732a111f9db41f3161ba18f8. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USQY51178435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0516f402f9f324967f04a23e6cc18f2ac67f9744f04c81a8fffc57c97a2f6504. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USQY51178437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbda3b95d26bb7d1cecd9408551bef3788007e6b909725b8ea4306a97bf8d19e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USQY51178438.
Bottle of Rock n Roll (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de8c23debfc4d48bb1119cf2ea545bf6a0873534105e25da1a69d851427fc4d. 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/CH6540848433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa666d5f1684d7945efeccff72129b01a6cabcf10f58425bd865fd9416557ec19. 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/CH6540848434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522873351f76a69c630f09c27dc497518ef8ae6abef38bacb9fd5b85496994ae. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CH6540848435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ea68bd3e4916cb4a485bea17cb365f7d044b1d5e79f5837e890875cd5a1ae. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/CH6540848436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e49f96161525248966b4e1c51a13e4673e5dffb8b8b566e3a08827056e993b. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CH6540848437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6149ec836c6efec122045edf81680cc98ee075e3a2cb3f8d31802a0beec1ca. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/CH6540848438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a69ad591f721679df9885d3ffdab95ebe5994861e6c470a508b7acc997d432a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CH6540848439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0d8deb32387c7fecad263978a00a2ba9179e1295fbd7633c3fe546e791e2bd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CH6540848912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47775a25c08a6f51aeab063ec9421da806ddd1b520cea5b65e1def803aa2d13. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6540848916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d1a4ac8dee38e535cc906ff6e09b67feedc1f197bc7f1e575f92da122eaf0. 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/CH6540848917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08601e8536ede46e1832c1ca32221b93625e4178b92e6e540cffb068fc7171e. 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/CH6540848918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7ec446338b1c1e099598e60620fbf87b96f70fb70bc9de61c1498447023bcf. 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/CH6540848919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae95ef0f2752ee666ac0e8abc90fd20ee5677b6a051509372e502e65fbe7737. 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/CH6540848920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4b335359a508a9c2db364c049f8f46e68b8b719461bae20bb71f8c24bfc52c. 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/CH6540848922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523adae8b68583cfab042e89d392b6dce7c195db16c8a7fc7a56c8a68869708. 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/CH6540848925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eec703881ab16c9d8128333023203a2c276b57dafd37779b563da55a90a9b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CH6540848921.