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 0x27552ae576223ea33da75782e93d00406340538ef0d0a4433874e2c2326ed9ea. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53314b5b-5c70-46fa-a417-34f0943102fc.json and https://artists.proofprofile.net/proofs/artist/53314b5b-5c70-46fa-a417-34f0943102fc.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 0x3570a3bb87bd807bb757f200ab6d7d3a55588f7efc4fa9dd8832c537431ff212. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEM2493296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6232f7bd8ed81604d95a93a6870fe7055cd31aaadd86687f9589b28d229c67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES82407574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc440cd8fa0250422cbd708a32157fbd9b451297e9398320d4efa4b3d94246. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB32386966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b69b1c5afd219d6e6171ef5342d44e5a204a1fb9aaa34b728ac64ddf54a22d. 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/QZK6P2325602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdb1e93a324fff775348acdb5401d929f3e54bb3e772c1e117101ec14c3ecdf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ62306050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f139c3bad7c198c37fee15c12fb7d73714269bca3f2bdc1ae756b8d0dfb07. 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/QZTB72297296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf2a1a435fbc53078cf1a4013d8b9617ca5168bdff6e9ad744e57a8a0c5a57. 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/QZTAZ2298206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193b3748b28337552d30798722f2ef52c236fe1a481bdec5a46efa3b63617e0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEN2225317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6829e658a262fd3c60effa02eba2eb9bd1a74e536d7b486fb41df23f09bb98dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2253305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771c5b9a2958baebeee14759686c6e369d256f1a4ded854c69784c154fc62295. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES62280935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260ea431747457baf22a8ec77bdc859836905675a39d21af4f4fceec47f3bf2f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA62279844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b73f7bfd69904979c983f94f96b011c82be33786b3064092ea0ccae36c61ba. 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/QZFZ72290894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef87251c35fe74de97e7a138ffecf50f4a1c7c8bf4a4d687175ad0f3c441eb3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ32299702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58287d6c93fbdcbff4a46e4aafe8f401673fefb1dbe4cbb062172b0e37bab2a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6L2164021.
Stand (Beautiful Girls / Purpurina / Rueda / Tattoo / Stand by me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55b3f9966ff9b8081bc212b931cc4950ae3f60b935d8e0c1074789412be8c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2191584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f09ca5880531757effbe1eb97f946bc2837c0c3d42d66c1de8552ccd7b792. 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/QZHNB2106273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867d1cb73aea6a5ab520537c396d5abe8bafdb88078e81d754c83ed27b177da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNA2146344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69784f1ed902226c21f73727e0eed860f23d050e3e930a4a8209ebc13ca63924. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QT3F32472078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf940b1714c9b8800cef71aae481aed3bbf3d90e696035b03537a7af56824057c. 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/QT3EZ2439641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b3dc94237d38c4571797893397a8949130f441b8c376a19ed95a71493440c9. 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/QT3EY2431378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3dc5e8cd4510832fad64c0e88dfb0737c4d9d02eff03069eda9ca6712938ce. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZZ7Q2423943.