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 0x79f82681a1960dae5f2d475eac29e079e4145d6b95a72bbae1d36ddb54ec4b38. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/742f277b-9967-4aa0-9cd6-6c6ed6b8e381.json and https://artists.proofprofile.net/proofs/artist/742f277b-9967-4aa0-9cd6-6c6ed6b8e381.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 0x59518ccc8107b1e7407b9b9cfe52ad515e70830b58e8b7999c807cd77e0a9f84. 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/USL4Q2163278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b486bcb7fe5a5e72b9a31b0fdbaa8aa2867f1e632678ebff03e20495a5c6d62. 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/USL4Q2163279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa115f18a7d700d117e0b66a7ff9223e88b5bfb5bb85eff032f81f6d26259c6ba. 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/AUKDT2400665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc618ca4db71e279cd976c803ffafd19104f5fafc458b6805acfeb2d7867f561f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUKDT2400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55ed4c2d46897ae6a0373541eb01ea7b7a1067ee67723014d3b9a6c9b46941. 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/AUGBT2355775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44aac878d63e01b8fd8adc48a685cb83c8414530ebaa3a110d70fd4e19466ce. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUKDT2300575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44ae5c0937e2c9268da4bddf94e682fd7703c5b529e848629732e00d0bfb741. 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/NLAM42300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298071b312009d75f2c9aed37de70d339d12a52bf60df06f1caf6d8733556b55. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLAM42300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26100affe4935ec09644d1370c08ac2fd4e0fcf2754b455eec152e2932c7d019. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKR6V2311009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13b9759fface2aaebeefa38cd63804b0a678bdf200fb0c03c45fe2bebfbf3e0. 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/UKR6V2310865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79867dddf1f830ddb08497a9abf939f3ce931f1babf0dae972811299d45d6e4c. 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/US39N2302992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd774b70d9164c11d0fa63615abe3d87d5a7619bbe89efb70e34acbbe2d8b17. 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/UKR6V2310278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4608cb722c967c8abcae4f5064c708bb03beddaf33171d9394ba69e1e7296ee4. 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/NLAM42300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd4e27fcfb1cb83dc6ba863daf028aeeb57358e03408c76b865473c905b72d6. 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/NLAM42200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cf87edef02af269d461027e498233487d05f753b53674989c9a2395081327. 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/UKR6V2213017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aec49ff17ba0e34e1b6f69a9fc2cb471377bea80d45b3e88b96da1d72f04668. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKR6V2212277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5498d2c825225a0d3a5021191d9f7965cfc6dfbc56b0a9f3f46122e25076f771. 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/UKR6V2211847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d8a280b2d2909424d1644676abdffbf2536323e0e19ef973a532f9521acdb4. 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/UKR6V2210479.
Dream Chasers, Vol. 5, as the Spring Comes