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 0x1ed251f2af1404f276f037e782a29abdf1023dad82eb7a349c2ac946cc1ea9e7. 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/b8c18351-6d76-41f4-83db-2cb2e7e19e0d.json and https://artists.proofprofile.net/proofs/artist/b8c18351-6d76-41f4-83db-2cb2e7e19e0d.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 0x798de58fd454c27efa666264287e581bd1c36d0368e95c58c496a91ae655c8ff. 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/SE5W32414518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd4d7ff173fe4ebac67d7100f6ebcefa99decb86c6acabf7a6d44ce11753123. 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/SE5W32414172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db52010211b883818ae673f338e3fe2a094dce6a6ebc7f4bf95e514c4be416d. 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/SE5W32406325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80163f6ae600398880be21940a4fa3c36e98ad003439c97e13b203843bd1213d. 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/SE5W32405945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174da8dac07faaef5ce9972533b33c708862a05cbddefe6cff876491721e315. 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/SE5W32405070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf9cd39417f5db60ded2ef74b49565cde1eae7399417b24b21acdfbaeccfd9c. 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/SE5W32400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467ad930ffdf121ac2396251ad441fa9073de17a4a43b4445b3aef1cd8173dd. 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/SE5W32400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0833015dd38dfea25e545cf2d3e8d5bc7b7a1534ba6460c5001b8bff0efd72. 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/SE5W32309378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d343a59b6327a7b785148f7d30d47dd69f2b4e5fe0c2a9ebd13e841e4e3354. 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/SE5W32308917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea86e146f6f9e2cd1299408fd9bff391a78b9ec12e8a509ef0012b5ac3aad54f. 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/SE5W32308727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb221573b09751b34fafc7c6b072b4b822521a644c064eb11a3d280b34d99c8e. 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/SE5W32308244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bf64e8a10305cd47173057ba998aa53b2c04bf7422c8b5ec1e70319af12bd1. 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/SE5W32307000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bfe0286b5c1e5bfb328837a0160a5c0177afc481a2068236513cc02837b65c. 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/SE5W32306457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c616e65464ff037f894554cb734c89c164dfa92ef77797246443b93bf464c93. 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/SE5W32305336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12cdfdad02c492f1fad124a68340f05c1d9bf8f6932c798e1b7fdbefc014321. 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/SE5W32300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e49af4e5cce0e01fc04faf27fd7034abb9c214686441f3d09333d6dd02ffee6. 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/SE5W32294083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441d8914149b37dd42e9138452594387ebf4ccbc0c55a090c20a3e9536462e1b. 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/SE5W32204402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac8f89c4de3cd92ddfecc3e13f4c9822005a84c6171752e63b78ac45d619d10. 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/SE5W32508428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5ce35e959fe6c39ac1ba68336aeba418d63fb522ca920f4e28beadcee40a71. 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/SE5W32507203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96079c6bb6e81d42407d7bd0e5dd96dff7c22b683366e21c56a70eca2bf9482b. 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/SE5W32506396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4ea052ce564f04c85a08a25967354b743ed433349bb9e53fcdca42fd3184d. 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/SE5W32505451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11de93a3fa9b7e6fd50877e32a9a22292b27edf9b5974781cbaedb1a64221448. 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/SE5W32505052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9cdbfc48f3722232032640a77f1c8f054f94cea9c8397c70098faa3389957e. 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/SE5W32468216.