ABSL may refer to: "Adapter, Bus, SCSI-ID, and LUN", a computer term for device addressing The Amundsen-Bellingshausen Seas Low, a climatological low-pressure area located over the Pacific sector
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dddeeefc04ea33772e5fb62df67a46fc80cf4244bbe64d1ba2d6d522cef38c1. 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/720d2df1-b02e-4153-a626-40aacd7fd281.json and https://artists.proofprofile.net/proofs/artist/720d2df1-b02e-4153-a626-40aacd7fd281.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5195e15db0ab0c8d3de4b2cde259828dc0266283414c95e30b40c23195954c0. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FRIDO1911791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2898293de82b18cafb3a60f8892deffc00f4eb6a752c3b75275e6cd25a60c80d. 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/FRIDO1911792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231b634dd626cf40e2f83736d58d93e5a5d14c49615b5cd4ad7be53dd7c5bb6d. 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/FRIDO1911793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b12803fc55576181ad94c102e9ee3a84b4a0bf8f42c01ea412d4bc7eebdf4a. 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/FRIDO1911794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350e204e342f34a31a7eb354d405da567272683fcbcba4ff223316406636e23. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DGA072112246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b73e2176af1d114c31de6a505ac1aad3de9b182c33c1620783f2c950000365. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRDX62210290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2bb2e22fa484152cf26c59c0a5bd6d5c174bb87a962a64e8ff1e70438ee9b2. 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/FRDX62210250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ec82b0d3168cc8147f6d9c58e7e883c799a5e6c374621ec9078123fdb1a8e5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRDX62210260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9714222f9d8a0989ae1b2273c4453814e9412e240e67266da7ce6b559f887341. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FRDX62210270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b901bae9a30201e3a1a53df71a3f760822608ce835fc3dc729e3288d5665ae. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRDX62210280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b73e2176af1d114c31de6a505ac1aad3de9b182c33c1620783f2c950000365. 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/FRDX62210290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1c62cb1a23ca0f5e370bd8d8f12fd9d0a7c00dc88445912373da118ce6b3d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRDX62210300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc87a75a6ab19c61e78f0617ca89f80e3b1cd1ec88f7180f50a4034c1481e2a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FRDX62210310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d6859ccd397533913dd316798039fda6c97241b0260eda1e769b852a89034c. 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/FRDX62210320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662f76dce20cdd530465ac216f8fcd1c810ef8ac83c3ff3e2aca6151603abf69. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRDX62210330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b95b54f309329479305e95338d5d6b5bc692cf306e346246272ef9169f214d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FRDX62210340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec7a331256e5b42e7008bfed5a75f2b7bf96bc020da0875ea125d2c5044f26. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SGA902088056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350e204e342f34a31a7eb354d405da567272683fcbcba4ff223316406636e23. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DGA072112246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f634efe1a0948298bb000fbe284cb1a93cac0e15262b8b43d886309fa522593. 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/FRX872102163.