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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 0x3568d822f3c529dd4462339ab5def607642816d2db474ec0ac270713973fdee3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4acea81-d0b0-478d-a2f7-2e347d80bfce.json and https://artists.proofprofile.net/proofs/artist/e4acea81-d0b0-478d-a2f7-2e347d80bfce.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 0xe5bcd1422d1b4f0969248a62f100f24aa11fc1a504c3e1210b5e2cee68cac9f6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:32Z), 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/TCAJF2546871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6163eb7fbd506dde5dcd9c7863f2efa3af4ca6e42d05001c008bb956871a56e. 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/TCAJF2546879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c6d94441849d4c5257a2f9140146b17dacf036d6718b5e6a682d417b22609. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJF2546883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd60d9b030dd69de26c5e97f5291f6ae27a8e6065810ffe26c95f7f2601c277. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAJF2546887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59408b219ce9c2e3158e4d9993db048561aceb1e317f14b6db7b946cbd147000. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAJF2546895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae21413738446268858a9e435990ac3c58db5ff3208cbc02c20d3d02b0c31dc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:40Z), 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/TCAJF2546901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f05d8671d1a50579d5f1ab11e93fa6eacbecb04f39ed115209bb5460cffccce. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAJF2546909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918d8e48c8700a98d3e982041001c7cbb46002dfe0e840dec91f40ea92b6370. 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/TCAJF2546914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dc67e24d06c2d309cc0d081fa9d844baeda65193a5fc5c23c3d5075902bb88. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAJF2546918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c59b702bc464115a84b1b500d8dd7bb3e523236fb55bf399427ed0a2d6f39bd. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAJF2546922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bd3d84f8f82c1b5cb27c21d535cd53ac146507d3f8d5d40012f20a10927e32. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAJF2546925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d65fd68c4ef005edc984b0e50acf53c08ffb894a8fb6f807d01ede70055503. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAJF2546930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7311bb33e93a909b8a4268f1e2dbae1ee99a1213e5309cabab9fab3e26ffc142. 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/TCAJF2546934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064fbf9041a88425087a12ac087a386e71824dc23fae77931f3ed966183ec6c9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAJF2546939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc01c8329f6ad44f70bfb9790ef570e15334af2dd0af7653894588b095d2444. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:25:39Z), 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/TCAJF2546942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26eb4a4b19c83e883c3902aaa908bc5da3fc6dcabf678ec1ed771c2c88d91e8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:48Z), 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/TCAJF2546964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f98a85171b98747b5d8f636715d5ab1767145f8f0c92250525a2ff603ef76. 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/CA5KR2073095.