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 0xd1975a9e75a529e9996fe41c577c5ddbdcc847c5eccff9eccfc27554610518e6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/558db670-f90e-437b-a7da-cf8b9c3e4795.json and https://artists.proofprofile.net/proofs/artist/558db670-f90e-437b-a7da-cf8b9c3e4795.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 0xd10b21a56f161eb7bd383d773a93852dcf2c3871e1c10acc996bd67d8fcfadab. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCADZ1829872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d9c0af44c0e05605388b3aefd21eafff51eb916e6dfdd9ebbf19e18b18db83. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAES2000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916ef5548a3614c8f6b2c9f9fcd626fa6d54867c9f164850ad1483e12fa0c224. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEW2042027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db0ddac8bf8636d5cbc4c6bd209ce4815ff821154cb5fbce83f1531c4d813fd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAEW2047922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38cea351848afae4978e9befa6acfff9e8bfe3a75f864d8f7934d62f3e6e73a. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:30Z), 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/TCAEW2075667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8626cc45b280354064b61c0dd0208c3b8e7dd35fc342154dae916df5484d06c5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEW2048157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5a9eb0a2bfb601bc51e5bdd8b27569b8f5299a42d85d31b95b3d6750f0d7ce. 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/TCAEY2031059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12045a2580a716471c86e9ae80b3ce719acaaed5212ac639ad0af7b294b2f08f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:15:14Z), 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/TCAEW2047087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9755bf5e2fbd024329381e5d4685bd2e780e5a8f13a1546351a5d1b2f1323abf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFA2058411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b81163b960d51ad24f2a68d8cb7c41c26b76ced984a7512acd42c938372ca2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:52:39Z), 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/TCAFA2058413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5927a412844b575dc5356d1f7e77b1a2af85b2b2132812c8a3e8b6271cbdd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFA2058415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51eec6281ecf2abd2589e59a115e5b0ff00ddb81eeaf3a0b91ae53853bdda5a8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USL4Q2074565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fda71e4ae1afb2a746b382827bf52ea34ab4c542356d5e4b0634e42da564a1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAFD2039891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21442f47f1b76a659eb433c20774184fef94f6eda946bd131aa2d52c713e3578. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAFE2051779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801b56564ba7a39b49d7c5d7d3f50190b9aaf13ed83b77c552f2120c039a7d2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P2020854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5793874f69b90d3de12003a3367cca6c8f70009697e83cbc8b6bbd6fd872829. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM22110945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b0476f1c3ffe68a69869dabb20545eefea54b295d6d2fa65539c2d1a9e7ebb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM82127704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ece3418ebb8643623ddccb2f473f30099a7b73f47a1b7af5c7aa5bc1810b7a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82176463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94655b3adacc66c95171ea12e2981e42df3331f04d516082ff86c17ccad6cce0. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAFW2129698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7834e087e5698d6e54af312db248709683ee5925d6396704e5852d1378551ef7. 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/TCAFW2129764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98997fb250191a0994bffeef200f766bad4494696fd2e4541a2f29ecd8c57de. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZHN52268200.
Tale As Old As Time, Beauty And The Beast