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 0x07812a360f725a0d37e34546d21fd21e20d5e40f38309ce24ae97338382cb8b4. 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/d3e9877a-3e01-40c1-8d97-db477775e3eb.json and https://artists.proofprofile.net/proofs/artist/d3e9877a-3e01-40c1-8d97-db477775e3eb.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 0x3131f8d5b47870ac3169201bfd8bd1756868be3e92440183018fda104e360247. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ATAJ12100554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a01d08091e153107ea6804dcdc3bb7a56285068695d58bda2c6d35fd8d9a4d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATAJ12100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d9e5f6e4f7e85e0f410afb6ff919dfc89f74a44e6b7aab9afda96eda4face8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATAJ12100559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca0a1ddbf4ce44cbef08b88c04e44928b24340edc2cf49a782dad5b561a3282. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ATAJ12100560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b77f9bb8dfc6bd77ecababb5f52c354b6a548b15d1c48f72e6fe865b27615c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATAJ12100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6df8bd3b11736c7875ff412a10a0e015474e0a1435aac9709dd341cd7ea6f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ATAJ12200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cac6a58fa00fc0118dbc25bda62dd9afa1b5c1e0f054acd7d2bf66e9021fe3. 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/ATAJ12200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1bc49f910736c47d2b8cef4b26e651b7af2640548bdbde6cb39b5b0ffd54a3. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ATAJ12200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf21104cbda3ab1dc372fb498c1198be2b26329265d5b18aa14360382edc377. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:52Z), 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/ATAJ12200457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc2ab86b774577caf05e12ff16ee57b720657bc1b33d3a771b095985d2025d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATAJ12200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72fa4fbc6c5584ca1f21e78574019ff898e2579987efa246af11344635c29cc. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ATAJ12200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abc5eb3cb20c25b5aa60eeb7be37d620436104470ea3c262cf4879bfb2ea44f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ATAJ12200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac7ab3c03b60d5045c5cadd73e1c9688beb2c4dacd0f3b9a289545c9452b379. 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/ATAJ12200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f49d4f067cef76642c008cf011d99a29b78daa84a36a6824dccb90cf86f78f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATAJ12200242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72af8fb6423f2c1db788a0398ae1ff362b444f451c0f098f05edae2789af16c9. 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/ATAJ12200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96544a09481af518fde9277f37e825a5d407f34f05dc2b5c4a46e60c6945b9b. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ATAJ12200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa91b9c5472f074d48499db619bf0652192f23d6adb6a8804e8cc78268419f0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:06Z), 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/ATAJ12200245.